[INFO] updating cached repository https://github.com/Hagi013/toy-container
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 31d5ce2801184b29635b94b1243fbff772cbb7dc
[INFO] testing Hagi013/toy-container against 1.45.2 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHagi013%2Ftoy-container" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Hagi013/toy-container on toolchain 1.45.2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Hagi013/toy-container
[INFO] finished tweaking git repo https://github.com/Hagi013/toy-container
[INFO] tweaked toml for git repo https://github.com/Hagi013/toy-container written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/Hagi013/toy-container already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ae31987153b3ac3fb2ac3c7a01312ee5811afa685686099312d6c333f4c8b6fe
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ae31987153b3ac3fb2ac3c7a01312ee5811afa685686099312d6c333f4c8b6fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ae31987153b3ac3fb2ac3c7a01312ee5811afa685686099312d6c333f4c8b6fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae31987153b3ac3fb2ac3c7a01312ee5811afa685686099312d6c333f4c8b6fe", kill_on_drop: false }`
[INFO] [stdout] ae31987153b3ac3fb2ac3c7a01312ee5811afa685686099312d6c333f4c8b6fe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 92021cc4e36bb6f858aaf76433efb0104d327fbef33339e16d655e815a248b38
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "92021cc4e36bb6f858aaf76433efb0104d327fbef33339e16d655e815a248b38", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]    Compiling toy-container v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Stderr`
[INFO] [stdout]  --> src/container_pivot.rs:2:22
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{Write, Stderr};
[INFO] [stdout]   |                      ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `FileType`, `set_permissions`
[INFO] [stdout]  --> src/container_pivot.rs:4:37
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::fs::{self, copy, read_dir, FileType, set_permissions, remove_dir};
[INFO] [stdout]   |                                     ^^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `PermissionsExt`, `symlink`
[INFO] [stdout]  --> src/container_pivot.rs:5:25
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::os::unix::fs::{symlink, PermissionsExt};
[INFO] [stdout]   |                         ^^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `chroot`
[INFO] [stdout]  --> src/container_pivot.rs:8:45
[INFO] [stdout]   |
[INFO] [stdout] 8 | use nix::unistd::{Pid, getpid, sethostname, chroot, chdir, mkdir, pivot_root};
[INFO] [stdout]   |                                             ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `chdir`
[INFO] [stdout]  --> src/escaping_chroot.rs:2:32
[INFO] [stdout]   |
[INFO] [stdout] 2 | use nix::unistd::{Pid, chroot, chdir, mkdir};
[INFO] [stdout]   |                                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `escaping_chroot::escape_chroot`
[INFO] [stdout]   --> src/container_pivot.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use escaping_chroot::escape_chroot;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/container_pivot.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 49 | /         loop {
[INFO] [stdout] 50 | |             sleep(Duration::from_secs(3));
[INFO] [stdout] 51 | |             spawn_sh("id", self_pid);
[INFO] [stdout] 52 | |             spawn_sh("ipcs", self_pid);
[INFO] [stdout] ...  |
[INFO] [stdout] 60 | |             spawn_sh("ls -a .", self_pid);
[INFO] [stdout] 61 | |         }
[INFO] [stdout]    | |_________- any code following this expression is unreachable
[INFO] [stdout] 62 |           return 0 as isize;
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/container_pivot.rs:80:5
[INFO] [stdout]    |
[INFO] [stdout] 76 | /     loop {
[INFO] [stdout] 77 | |         exec_sh("uname -n", root_pid);
[INFO] [stdout] 78 | |         sleep(Duration::from_secs(3));
[INFO] [stdout] 79 | |     }
[INFO] [stdout]    | |_____- any code following this expression is unreachable
[INFO] [stdout] 80 |       Ok(())
[INFO] [stdout]    |       ^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufReader`, `Stderr`
[INFO] [stdout]  --> src/executor_1.rs:2:22
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{Write, Stderr, BufReader, BufRead};
[INFO] [stdout]   |                      ^^^^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `FileType`, `set_permissions`
[INFO] [stdout]  --> src/executor_1.rs:4:37
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::fs::{self, copy, read_dir, FileType, set_permissions, remove_dir};
[INFO] [stdout]   |                                     ^^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `PermissionsExt`, `symlink`
[INFO] [stdout]  --> src/executor_1.rs:5:25
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::os::unix::fs::{symlink, PermissionsExt};
[INFO] [stdout]   |                         ^^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `chroot`
[INFO] [stdout]  --> src/executor_1.rs:8:45
[INFO] [stdout]   |
[INFO] [stdout] 8 | use nix::unistd::{Pid, getpid, sethostname, chroot, chdir, mkdir, pivot_root};
[INFO] [stdout]   |                                             ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RwLockReadGuard`
[INFO] [stdout]   --> src/executor_1.rs:14:25
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::sync::{RwLock, RwLockReadGuard, RwLockWriteGuard};
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Stderr`
[INFO] [stdout]  --> src/container_1.rs:2:22
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{Write, Stderr};
[INFO] [stdout]   |                      ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `FileType`, `set_permissions`
[INFO] [stdout]  --> src/container_1.rs:4:37
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::fs::{self, copy, read_dir, FileType, set_permissions};
[INFO] [stdout]   |                                     ^^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `PermissionsExt`, `symlink`
[INFO] [stdout]  --> src/container_1.rs:5:25
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::os::unix::fs::{symlink, PermissionsExt};
[INFO] [stdout]   |                         ^^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufReader`, `Stderr`
[INFO] [stdout]  --> src/execution_trace_1.rs:2:22
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{Write, Stderr, BufReader, BufRead};
[INFO] [stdout]   |                      ^^^^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufReader`, `BufWriter`, `Stderr`
[INFO] [stdout]  --> src/execution_multi_trace_1.rs:2:22
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{Write, Stderr, BufReader, BufRead, Read, BufWriter};
[INFO] [stdout]   |                      ^^^^^^  ^^^^^^^^^                 ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufReader`, `BufWriter`, `Stderr`
[INFO] [stdout]  --> src/execution_trace_2.rs:2:22
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{Write, Stderr, BufReader, BufRead, Read, BufWriter};
[INFO] [stdout]   |                      ^^^^^^  ^^^^^^^^^                 ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `FileType`, `File`, `set_permissions`
[INFO] [stdout]  --> src/execution_trace_2.rs:4:37
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::fs::{self, copy, read_dir, FileType, set_permissions, remove_dir, OpenOptions, File};
[INFO] [stdout]   |                                     ^^^^^^^^  ^^^^^^^^^^^^^^^                           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `OpenOptionsExt`, `PermissionsExt`, `symlink`
[INFO] [stdout]  --> src/execution_trace_2.rs:5:25
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::os::unix::fs::{symlink, PermissionsExt, OpenOptionsExt};
[INFO] [stdout]   |                         ^^^^^^^  ^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AsRawFd`, `FromRawFd`
[INFO] [stdout]  --> src/execution_trace_2.rs:6:25
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::os::unix::io::{AsRawFd, FromRawFd};
[INFO] [stdout]   |                         ^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread::sleep`
[INFO] [stdout]  --> src/execution_trace_2.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::thread::sleep;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `chroot`
[INFO] [stdout]  --> src/execution_trace_2.rs:9:45
[INFO] [stdout]   |
[INFO] [stdout] 9 | use nix::unistd::{Pid, getpid, sethostname, chroot, chdir, mkdir, pivot_root};
[INFO] [stdout]   |                                             ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]   --> src/execution_trace_2.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use std::time::Duration;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RwLockReadGuard`
[INFO] [stdout]   --> src/execution_trace_2.rs:18:25
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::sync::{RwLock, RwLockReadGuard, RwLockWriteGuard, Arc};
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Child`
[INFO] [stdout]  --> src/execution_multi_trace_1.rs:3:36
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::process::{Command, Stdio, Child};
[INFO] [stdout]   |                                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `FileType`, `File`, `set_permissions`
[INFO] [stdout]  --> src/execution_multi_trace_1.rs:5:37
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::fs::{self, copy, read_dir, FileType, set_permissions, remove_dir, OpenOptions, File};
[INFO] [stdout]   |                                     ^^^^^^^^  ^^^^^^^^^^^^^^^                           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `OpenOptionsExt`, `PermissionsExt`, `symlink`
[INFO] [stdout]  --> src/execution_multi_trace_1.rs:6:25
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::os::unix::fs::{symlink, PermissionsExt, OpenOptionsExt};
[INFO] [stdout]   |                         ^^^^^^^  ^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AsRawFd`, `FromRawFd`
[INFO] [stdout]  --> src/execution_multi_trace_1.rs:7:25
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::os::unix::io::{AsRawFd, FromRawFd};
[INFO] [stdout]   |                         ^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread::sleep`
[INFO] [stdout]  --> src/execution_multi_trace_1.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::thread::sleep;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/execution_trace_2.rs:395:21
[INFO] [stdout]     |
[INFO] [stdout] 395 |                     (regs.rdx / (std::mem::size_of::<u64>() as u64))
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `chroot`
[INFO] [stdout]   --> src/execution_multi_trace_1.rs:10:45
[INFO] [stdout]    |
[INFO] [stdout] 10 | use nix::unistd::{Pid, getpid, sethostname, chroot, chdir, mkdir, pivot_root};
[INFO] [stdout]    |                                             ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]   --> src/execution_multi_trace_1.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::time::Duration;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RwLockReadGuard`
[INFO] [stdout]   --> src/execution_multi_trace_1.rs:19:25
[INFO] [stdout]    |
[INFO] [stdout] 19 | use std::sync::{RwLock, RwLockReadGuard, RwLockWriteGuard, Arc};
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `FileType`, `set_permissions`
[INFO] [stdout]  --> src/execution_trace_1.rs:4:37
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::fs::{self, copy, read_dir, FileType, set_permissions, remove_dir};
[INFO] [stdout]   |                                     ^^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `PermissionsExt`, `symlink`
[INFO] [stdout]  --> src/execution_trace_1.rs:5:25
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::os::unix::fs::{symlink, PermissionsExt};
[INFO] [stdout]   |                         ^^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread::sleep`
[INFO] [stdout]  --> src/execution_trace_1.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::thread::sleep;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `chroot`
[INFO] [stdout]  --> src/execution_trace_1.rs:8:45
[INFO] [stdout]   |
[INFO] [stdout] 8 | use nix::unistd::{Pid, getpid, sethostname, chroot, chdir, mkdir, pivot_root};
[INFO] [stdout]   |                                             ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]   --> src/execution_trace_1.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::time::Duration;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RwLockReadGuard`
[INFO] [stdout]   --> src/execution_trace_1.rs:17:25
[INFO] [stdout]    |
[INFO] [stdout] 17 | use std::sync::{RwLock, RwLockReadGuard, RwLockWriteGuard};
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:567:9
[INFO] [stdout]     |
[INFO] [stdout] 567 |         (count / (std::mem::size_of::<u64>() as u64))
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/container_1.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 30 | /         loop {
[INFO] [stdout] 31 | |             sleep(Duration::from_secs(3));
[INFO] [stdout] 32 | |             spawn_sh("id", self_pid);
[INFO] [stdout] 33 | |             spawn_sh("ipcs", self_pid);
[INFO] [stdout] ...  |
[INFO] [stdout] 41 | |             // spawn_sh("ls -a ..", self_pid);
[INFO] [stdout] 42 | |         }
[INFO] [stdout]    | |_________- any code following this expression is unreachable
[INFO] [stdout] 43 |           return 0 as isize;
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/container_1.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 57 | /     loop {
[INFO] [stdout] 58 | |         exec_sh("uname -n", root_pid);
[INFO] [stdout] 59 | |         sleep(Duration::from_secs(3));
[INFO] [stdout] 60 | |     }
[INFO] [stdout]    | |_____- any code following this expression is unreachable
[INFO] [stdout] 61 |       Ok(())
[INFO] [stdout]    |       ^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/executor_1.rs:113:9
[INFO] [stdout]     |
[INFO] [stdout] 110 | /         loop {
[INFO] [stdout] 111 | |             // sleep(Duration::from_secs(3));
[INFO] [stdout] 112 | |         }
[INFO] [stdout]     | |_________- any code following this expression is unreachable
[INFO] [stdout] 113 |           return 0 as isize;
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/executor_1.rs:131:5
[INFO] [stdout]     |
[INFO] [stdout] 128 | /     loop {
[INFO] [stdout] 129 | |         sleep(Duration::from_secs(3));
[INFO] [stdout] 130 | |     }
[INFO] [stdout]     | |_____- any code following this expression is unreachable
[INFO] [stdout] 131 |       Ok(())
[INFO] [stdout]     |       ^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `escape_chroot`
[INFO] [stdout]  --> src/escaping_chroot.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn escape_chroot(pid: Pid) {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `dir`
[INFO] [stdout]    --> src/container_pivot.rs:176:4
[INFO] [stdout]     |
[INFO] [stdout] 176 | fn dir(path: &str) {
[INFO] [stdout]     |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/container_pivot.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         chdir("/root");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/container_pivot.rs:64:5
[INFO] [stdout]    |
[INFO] [stdout] 64 |     prepare_bash();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/container_pivot.rs:164:13
[INFO] [stdout]     |
[INFO] [stdout] 164 |             copy_dir(entry.as_os_str().to_str().unwrap(), Path::new(target).join(entry.file_name().unwrap()).as_os_str().to_str().unwrap());
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/execution_trace_1.rs:119:9
[INFO] [stdout]     |
[INFO] [stdout] 115 | /         loop {
[INFO] [stdout] 116 | |             // sleep(Duration::from_secs(3));
[INFO] [stdout] 117 | |             // spawn_sh("ls -a", self_pid);
[INFO] [stdout] 118 | |         }
[INFO] [stdout]     | |_________- any code following this expression is unreachable
[INFO] [stdout] 119 |           return 0 as isize;
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufRead`
[INFO] [stdout]  --> src/executor_1.rs:2:41
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{Write, Stderr, BufReader, BufRead};
[INFO] [stdout]   |                                         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:138:9
[INFO] [stdout]     |
[INFO] [stdout] 134 | /         loop {
[INFO] [stdout] 135 | |             // sleep(Duration::from_secs(3));
[INFO] [stdout] 136 | |             // spawn_sh("ls -a", self_pid);
[INFO] [stdout] 137 | |         }
[INFO] [stdout]     | |_________- any code following this expression is unreachable
[INFO] [stdout] 138 |           return 0 as isize;
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `root_pid`
[INFO] [stdout]    --> src/executor_1.rs:125:9
[INFO] [stdout]     |
[INFO] [stdout] 125 |     let root_pid = getpid();
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_root_pid`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/execution_trace_1.rs:201:5
[INFO] [stdout]     |
[INFO] [stdout] 140 | /     loop {
[INFO] [stdout] 141 | |         let status: WaitStatus = ptrace::wait_pid(pid).unwrap();
[INFO] [stdout] 142 | |         println!("status: {:?}", status);
[INFO] [stdout] 143 | |         let regs: user_regs_struct = ptrace::getregs(pid).unwrap();
[INFO] [stdout] ...   |
[INFO] [stdout] 199 | |         // sleep(Duration::from_secs(3));
[INFO] [stdout] 200 | |     }
[INFO] [stdout]     | |_____- any code following this expression is unreachable
[INFO] [stdout] 201 |       Ok(())
[INFO] [stdout]     |       ^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/execution_trace_2.rs:136:9
[INFO] [stdout]     |
[INFO] [stdout] 132 | /         loop {
[INFO] [stdout] 133 | |             // sleep(Duration::from_secs(3));
[INFO] [stdout] 134 | |             // spawn_sh("ls -a", self_pid);
[INFO] [stdout] 135 | |         }
[INFO] [stdout]     | |_________- any code following this expression is unreachable
[INFO] [stdout] 136 |           return 0 as isize;
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `dir`
[INFO] [stdout]    --> src/container_1.rs:156:4
[INFO] [stdout]     |
[INFO] [stdout] 156 | fn dir(path: &str) {
[INFO] [stdout]     |    ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/container_1.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     prepare_bash();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/container_1.rs:144:13
[INFO] [stdout]     |
[INFO] [stdout] 144 |             copy_dir(entry.as_os_str().to_str().unwrap(), Path::new(target).join(entry.file_name().unwrap()).as_os_str().to_str().unwrap());
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `dir`
[INFO] [stdout]    --> src/executor_1.rs:225:4
[INFO] [stdout]     |
[INFO] [stdout] 225 | fn dir(path: &str) {
[INFO] [stdout]     |    ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufRead`
[INFO] [stdout]  --> src/execution_trace_1.rs:2:41
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{Write, Stderr, BufReader, BufRead};
[INFO] [stdout]   |                                         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `root_pid`
[INFO] [stdout]    --> src/execution_trace_1.rs:134:9
[INFO] [stdout]     |
[INFO] [stdout] 134 |     let root_pid = getpid();
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_root_pid`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `is_enter_stop` is never read
[INFO] [stdout]    --> src/execution_trace_1.rs:137:9
[INFO] [stdout]     |
[INFO] [stdout] 137 |     let mut is_enter_stop: bool = false;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `is_enter_stop` is never read
[INFO] [stdout]    --> src/execution_trace_1.rs:188:9
[INFO] [stdout]     |
[INFO] [stdout] 188 |         is_enter_stop = false;
[INFO] [stdout]     |         ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/executor_1.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |         chdir("/root");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/executor_1.rs:97:13
[INFO] [stdout]    |
[INFO] [stdout] 97 |             mount_dir(&(&*MOUNT_DIR.read().unwrap()).as_ref().unwrap(), "target");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/executor_1.rs:115:5
[INFO] [stdout]     |
[INFO] [stdout] 115 |     prepare_bash();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/executor_1.rs:215:13
[INFO] [stdout]     |
[INFO] [stdout] 215 |             copy_dir(entry.as_os_str().to_str().unwrap(), Path::new(target).join(entry.file_name().unwrap()).as_os_str().to_str().unwrap());
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/executor_1.rs:240:5
[INFO] [stdout]     |
[INFO] [stdout] 240 | /     mount::<Path, Path, str, str>(
[INFO] [stdout] 241 | |         Some(source_path),
[INFO] [stdout] 242 | |         target_path.as_path(),
[INFO] [stdout] 243 | |         Some("ext4"),
[INFO] [stdout] 244 | |         MsFlags::MS_BIND | MsFlags::MS_REC,
[INFO] [stdout] 245 | |         None,
[INFO] [stdout] 246 | |     );
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufRead`
[INFO] [stdout]  --> src/execution_trace_2.rs:2:41
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{Write, Stderr, BufReader, BufRead, Read, BufWriter};
[INFO] [stdout]   |                                         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/execution_trace_2.rs:2:50
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{Write, Stderr, BufReader, BufRead, Read, BufWriter};
[INFO] [stdout]   |                                                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `regs`
[INFO] [stdout]    --> src/execution_trace_2.rs:230:17
[INFO] [stdout]     |
[INFO] [stdout] 230 |             let mut regs: user_regs_struct = ptrace::getregs(pid).unwrap();
[INFO] [stdout]     |                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_regs`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pid`
[INFO] [stdout]    --> src/execution_trace_2.rs:367:19
[INFO] [stdout]     |
[INFO] [stdout] 367 | fn handle_syscall(pid: Pid, status: WaitStatus, regs: user_regs_struct, prev_orig_rax: u64, root_pid: Pid) -> Result<Option<bool>> {
[INFO] [stdout]     |                   ^^^ help: if this is intentional, prefix it with an underscore: `_pid`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `prev_orig_rax`
[INFO] [stdout]    --> src/execution_trace_2.rs:367:73
[INFO] [stdout]     |
[INFO] [stdout] 367 | fn handle_syscall(pid: Pid, status: WaitStatus, regs: user_regs_struct, prev_orig_rax: u64, root_pid: Pid) -> Result<Option<bool>> {
[INFO] [stdout]     |                                                                         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_prev_orig_rax`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `root_pid`
[INFO] [stdout]    --> src/execution_trace_2.rs:367:93
[INFO] [stdout]     |
[INFO] [stdout] 367 | fn handle_syscall(pid: Pid, status: WaitStatus, regs: user_regs_struct, prev_orig_rax: u64, root_pid: Pid) -> Result<Option<bool>> {
[INFO] [stdout]     |                                                                                             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_root_pid`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `traceme`
[INFO] [stdout]   --> src/ptrace.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn traceme() -> Result<()> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `detach`
[INFO] [stdout]   --> src/ptrace.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn detach(pid: Pid) -> Result<()> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `cont`
[INFO] [stdout]   --> src/ptrace.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn cont(pid: Pid) -> Result<()> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `set_emulate_option`
[INFO] [stdout]   --> src/ptrace.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub fn set_emulate_option(pid: Pid) -> Result<()> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `set_emulate_option_simple`
[INFO] [stdout]   --> src/ptrace.rs:58:8
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub fn set_emulate_option_simple(pid: Pid) -> Result<()> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `wait_all`
[INFO] [stdout]   --> src/ptrace.rs:73:8
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub fn wait_all() -> Result<WaitStatus> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:561:5
[INFO] [stdout]     |
[INFO] [stdout] 520 | /     match status {
[INFO] [stdout] 521 | |         WaitStatus::PtraceEvent(pid, sig, int) => {
[INFO] [stdout] 522 | |             match sig {
[INFO] [stdout] 523 | |                 signal::SIGTRAP => {
[INFO] [stdout] ...   |
[INFO] [stdout] 559 | |         },
[INFO] [stdout] 560 | |     }
[INFO] [stdout]     | |_____- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 561 |       Ok(Some(false))
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `syscall_step`
[INFO] [stdout]   --> src/ptrace.rs:83:8
[INFO] [stdout]    |
[INFO] [stdout] 83 | pub fn syscall_step(pid: Pid) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `setregs`
[INFO] [stdout]   --> src/ptrace.rs:91:8
[INFO] [stdout]    |
[INFO] [stdout] 91 | pub fn setregs(pid: Pid, urs: user_regs_struct) -> Result<()> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sysemu`
[INFO] [stdout]    --> src/ptrace.rs:100:8
[INFO] [stdout]     |
[INFO] [stdout] 100 | pub fn sysemu(pid: Pid) -> Result<()> {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sysemu_single`
[INFO] [stdout]    --> src/ptrace.rs:109:8
[INFO] [stdout]     |
[INFO] [stdout] 109 | pub fn sysemu_single(pid: Pid) -> Result<()> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pokeuser`
[INFO] [stdout]    --> src/ptrace.rs:118:8
[INFO] [stdout]     |
[INFO] [stdout] 118 | pub fn pokeuser(pid: Pid, addr: u64, data: u64) -> Result<()> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_event`
[INFO] [stdout]    --> src/ptrace.rs:126:8
[INFO] [stdout]     |
[INFO] [stdout] 126 | pub fn get_event(pid: Pid) -> Result<i64> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_siginfo`
[INFO] [stdout]    --> src/ptrace.rs:131:8
[INFO] [stdout]     |
[INFO] [stdout] 131 | pub fn get_siginfo(pid: Pid) -> Result<libc::siginfo_t> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `dir`
[INFO] [stdout]    --> src/execution_trace_1.rs:295:4
[INFO] [stdout]     |
[INFO] [stdout] 295 | fn dir(path: &str) {
[INFO] [stdout]     |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/execution_trace_1.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 65 |         chdir("/root");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_trace_1.rs:102:13
[INFO] [stdout]     |
[INFO] [stdout] 102 |             mount_dir(&(&*MOUNT_DIR.read().unwrap()).as_ref().unwrap(), "target");
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_trace_1.rs:121:5
[INFO] [stdout]     |
[INFO] [stdout] 121 |     prepare_bash();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_trace_1.rs:132:5
[INFO] [stdout]     |
[INFO] [stdout] 132 |     ptrace::set_tracesysgood(pid);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_trace_1.rs:285:13
[INFO] [stdout]     |
[INFO] [stdout] 285 |             copy_dir(entry.as_os_str().to_str().unwrap(), Path::new(target).join(entry.file_name().unwrap()).as_os_str().to_str().unwrap());
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_trace_1.rs:310:5
[INFO] [stdout]     |
[INFO] [stdout] 310 | /     mount::<Path, Path, str, str>(
[INFO] [stdout] 311 | |         Some(source_path),
[INFO] [stdout] 312 | |         target_path.as_path(),
[INFO] [stdout] 313 | |         Some("ext4"),
[INFO] [stdout] 314 | |         MsFlags::MS_BIND | MsFlags::MS_REC,
[INFO] [stdout] 315 | |         None,
[INFO] [stdout] 316 | |     );
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/ptrace.rs:80:5
[INFO] [stdout]    |
[INFO] [stdout] 80 |     ptrace::syscall(pid, None);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/ptrace.rs:84:5
[INFO] [stdout]    |
[INFO] [stdout] 84 |     ptrace::step(pid, None);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/ptrace.rs:101:5
[INFO] [stdout]     |
[INFO] [stdout] 101 | /     Errno::result(
[INFO] [stdout] 102 | |         unsafe { libc::ptrace(31 as libc::c_uint, libc::pid_t::from(pid), std::ptr::null_mut::<libc::c_uint>(), std::ptr::null_mut::<libc::c_uint>()) }
[INFO] [stdout] 103 | |         // unsafe { libc::ptrace(24 as libc::c_uint, libc::pid_t::from(pid) as i32, std::ptr::null_mut::<std::ffi::c_void>(), std::ptr::null_mut::<std::ffi::c_void>()) }
[INFO] [stdout] 104 | |     )
[INFO] [stdout] 105 | |         .map(drop);
[INFO] [stdout]     | |___________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/ptrace.rs:110:5
[INFO] [stdout]     |
[INFO] [stdout] 110 | /     Errno::result(
[INFO] [stdout] 111 | |         unsafe { libc::ptrace(32 as libc::c_uint, libc::pid_t::from(pid), std::ptr::null_mut::<libc::c_uint>(), std::ptr::null_mut::<libc::c_uint>()) }
[INFO] [stdout] 112 | |     )
[INFO] [stdout] 113 | |         .map(drop);
[INFO] [stdout]     | |___________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/ptrace.rs:119:5
[INFO] [stdout]     |
[INFO] [stdout] 119 | /     Errno::result(
[INFO] [stdout] 120 | |         unsafe { libc::ptrace(6 as libc::c_uint, libc::pid_t::from(pid), addr as *mut libc::c_void, data as *mut libc::c_void) }
[INFO] [stdout] 121 | |     )
[INFO] [stdout] 122 | |         .map(drop);
[INFO] [stdout]     | |___________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/execution_trace_2.rs:174:13
[INFO] [stdout]     |
[INFO] [stdout] 174 |         let mut regs: user_regs_struct = ptrace::getregs(pid).unwrap();
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/execution_trace_2.rs:180:21
[INFO] [stdout]     |
[INFO] [stdout] 180 |                 let mut contents = fs::read_to_string(read_guard.as_path()).unwrap();
[INFO] [stdout]     |                     ----^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/execution_trace_2.rs:230:17
[INFO] [stdout]     |
[INFO] [stdout] 230 |             let mut regs: user_regs_struct = ptrace::getregs(pid).unwrap();
[INFO] [stdout]     |                 ----^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufRead`
[INFO] [stdout]  --> src/execution_multi_trace_1.rs:2:41
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{Write, Stderr, BufReader, BufRead, Read, BufWriter};
[INFO] [stdout]   |                                         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/execution_multi_trace_1.rs:2:50
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{Write, Stderr, BufReader, BufRead, Read, BufWriter};
[INFO] [stdout]   |                                                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pid`
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:458:19
[INFO] [stdout]     |
[INFO] [stdout] 458 | fn handle_syscall(pid: Pid, status: WaitStatus, regs: user_regs_struct, prev_orig_rax: u64, root_pid: Pid) -> Result<Option<bool>> {
[INFO] [stdout]     |                   ^^^ help: if this is intentional, prefix it with an underscore: `_pid`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `prev_orig_rax`
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:458:73
[INFO] [stdout]     |
[INFO] [stdout] 458 | fn handle_syscall(pid: Pid, status: WaitStatus, regs: user_regs_struct, prev_orig_rax: u64, root_pid: Pid) -> Result<Option<bool>> {
[INFO] [stdout]     |                                                                         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_prev_orig_rax`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `root_pid`
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:458:93
[INFO] [stdout]     |
[INFO] [stdout] 458 | fn handle_syscall(pid: Pid, status: WaitStatus, regs: user_regs_struct, prev_orig_rax: u64, root_pid: Pid) -> Result<Option<bool>> {
[INFO] [stdout]     |                                                                                             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_root_pid`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `int`
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:521:43
[INFO] [stdout]     |
[INFO] [stdout] 521 |         WaitStatus::PtraceEvent(pid, sig, int) => {
[INFO] [stdout]     |                                           ^^^ help: if this is intentional, prefix it with an underscore: `_int`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:176:17
[INFO] [stdout]     |
[INFO] [stdout] 176 |             let mut child_regs: user_regs_struct = ptrace::getregs(pid).unwrap();
[INFO] [stdout]     |                 ----^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:187:13
[INFO] [stdout]     |
[INFO] [stdout] 187 |         let mut regs: user_regs_struct = ptrace::getregs(pid).unwrap();
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:193:21
[INFO] [stdout]     |
[INFO] [stdout] 193 |                 let mut contents = fs::read_to_string(read_guard.as_path()).unwrap();
[INFO] [stdout]     |                     ----^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:244:17
[INFO] [stdout]     |
[INFO] [stdout] 244 |             let mut regs: user_regs_struct = ptrace::getregs(pid).unwrap();
[INFO] [stdout]     |                 ----^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `traceme`
[INFO] [stdout]   --> src/ptrace.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn traceme() -> Result<()> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `cont`
[INFO] [stdout]   --> src/ptrace.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn cont(pid: Pid) -> Result<()> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `set_emulate_option`
[INFO] [stdout]   --> src/ptrace.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub fn set_emulate_option(pid: Pid) -> Result<()> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `set_emulate_option_simple`
[INFO] [stdout]   --> src/ptrace.rs:58:8
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub fn set_emulate_option_simple(pid: Pid) -> Result<()> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pokeuser`
[INFO] [stdout]    --> src/ptrace.rs:118:8
[INFO] [stdout]     |
[INFO] [stdout] 118 | pub fn pokeuser(pid: Pid, addr: u64, data: u64) -> Result<()> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_event`
[INFO] [stdout]    --> src/ptrace.rs:126:8
[INFO] [stdout]     |
[INFO] [stdout] 126 | pub fn get_event(pid: Pid) -> Result<i64> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `dir`
[INFO] [stdout]    --> src/execution_trace_2.rs:330:4
[INFO] [stdout]     |
[INFO] [stdout] 330 | fn dir(path: &str) {
[INFO] [stdout]     |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `make_fifo`
[INFO] [stdout]    --> src/execution_trace_2.rs:355:4
[INFO] [stdout]     |
[INFO] [stdout] 355 | fn make_fifo(file_path: &str, mode: Mode) -> Result<PathBuf> {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/execution_trace_2.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |         chdir("/root");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_trace_2.rs:109:13
[INFO] [stdout]     |
[INFO] [stdout] 109 |             mount_dir(&(&*MOUNT_DIR.read().unwrap()).as_ref().unwrap(), "target");
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_trace_2.rs:138:5
[INFO] [stdout]     |
[INFO] [stdout] 138 |     prepare_bash();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_trace_2.rs:149:5
[INFO] [stdout]     |
[INFO] [stdout] 149 |     ptrace::set_tracesysgood(pid);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_trace_2.rs:216:17
[INFO] [stdout]     |
[INFO] [stdout] 216 |                 ptrace::sysemu_single(pid);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_trace_2.rs:218:17
[INFO] [stdout]     |
[INFO] [stdout] 218 |                 ptrace::sysemu(pid);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_trace_2.rs:320:13
[INFO] [stdout]     |
[INFO] [stdout] 320 |             copy_dir(entry.as_os_str().to_str().unwrap(), Path::new(target).join(entry.file_name().unwrap()).as_os_str().to_str().unwrap());
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_trace_2.rs:345:5
[INFO] [stdout]     |
[INFO] [stdout] 345 | /     mount::<Path, Path, str, str>(
[INFO] [stdout] 346 | |         Some(source_path),
[INFO] [stdout] 347 | |         target_path.as_path(),
[INFO] [stdout] 348 | |         Some("ext4"),
[INFO] [stdout] 349 | |         MsFlags::MS_BIND | MsFlags::MS_REC,
[INFO] [stdout] 350 | |         None,
[INFO] [stdout] 351 | |     );
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_trace_2.rs:377:21
[INFO] [stdout]     |
[INFO] [stdout] 377 |                     ptrace::detach(pid);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_trace_2.rs:413:17
[INFO] [stdout]     |
[INFO] [stdout] 413 |                 ptrace::setregs(pid, new_regs);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_trace_2.rs:421:17
[INFO] [stdout]     |
[INFO] [stdout] 421 |                 ptrace::setregs(pid, new_regs);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/ptrace.rs:80:5
[INFO] [stdout]    |
[INFO] [stdout] 80 |     ptrace::syscall(pid, None);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/ptrace.rs:84:5
[INFO] [stdout]    |
[INFO] [stdout] 84 |     ptrace::step(pid, None);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/ptrace.rs:101:5
[INFO] [stdout]     |
[INFO] [stdout] 101 | /     Errno::result(
[INFO] [stdout] 102 | |         unsafe { libc::ptrace(31 as libc::c_uint, libc::pid_t::from(pid), std::ptr::null_mut::<libc::c_uint>(), std::ptr::null_mut::<libc::c_uint>()) }
[INFO] [stdout] 103 | |         // unsafe { libc::ptrace(24 as libc::c_uint, libc::pid_t::from(pid) as i32, std::ptr::null_mut::<std::ffi::c_void>(), std::ptr::null_mut::<std::ffi::c_void>()) }
[INFO] [stdout] 104 | |     )
[INFO] [stdout] 105 | |         .map(drop);
[INFO] [stdout]     | |___________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/ptrace.rs:110:5
[INFO] [stdout]     |
[INFO] [stdout] 110 | /     Errno::result(
[INFO] [stdout] 111 | |         unsafe { libc::ptrace(32 as libc::c_uint, libc::pid_t::from(pid), std::ptr::null_mut::<libc::c_uint>(), std::ptr::null_mut::<libc::c_uint>()) }
[INFO] [stdout] 112 | |     )
[INFO] [stdout] 113 | |         .map(drop);
[INFO] [stdout]     | |___________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/ptrace.rs:119:5
[INFO] [stdout]     |
[INFO] [stdout] 119 | /     Errno::result(
[INFO] [stdout] 120 | |         unsafe { libc::ptrace(6 as libc::c_uint, libc::pid_t::from(pid), addr as *mut libc::c_void, data as *mut libc::c_void) }
[INFO] [stdout] 121 | |     )
[INFO] [stdout] 122 | |         .map(drop);
[INFO] [stdout]     | |___________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:544:17
[INFO] [stdout]     |
[INFO] [stdout] 544 |             let mut child_regs: user_regs_struct = ptrace::getregs(pid).unwrap();
[INFO] [stdout]     |                 ----^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:550:17
[INFO] [stdout]     |
[INFO] [stdout] 550 |             let mut child_regs: user_regs_struct = ptrace::getregs(pid).unwrap();
[INFO] [stdout]     |                 ----^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `cont`
[INFO] [stdout]   --> src/ptrace.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn cont(pid: Pid) -> Result<()> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `set_tracesysgood`
[INFO] [stdout]   --> src/ptrace.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub fn set_tracesysgood(pid: Pid) -> Result<()>  {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `set_emulate_option_simple`
[INFO] [stdout]   --> src/ptrace.rs:58:8
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub fn set_emulate_option_simple(pid: Pid) -> Result<()> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pokeuser`
[INFO] [stdout]    --> src/ptrace.rs:118:8
[INFO] [stdout]     |
[INFO] [stdout] 118 | pub fn pokeuser(pid: Pid, addr: u64, data: u64) -> Result<()> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `dir`
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:421:4
[INFO] [stdout]     |
[INFO] [stdout] 421 | fn dir(path: &str) {
[INFO] [stdout]     |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `make_fifo`
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:446:4
[INFO] [stdout]     |
[INFO] [stdout] 446 | fn make_fifo(file_path: &str, mode: Mode) -> Result<PathBuf> {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/execution_multi_trace_1.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |         chdir("/root");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:110:13
[INFO] [stdout]     |
[INFO] [stdout] 110 |             mount_dir(&(&*MOUNT_DIR.read().unwrap()).as_ref().unwrap(), "target");
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:140:5
[INFO] [stdout]     |
[INFO] [stdout] 140 |     prepare_bash();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:152:5
[INFO] [stdout]     |
[INFO] [stdout] 152 |     ptrace::set_emulate_option(pid);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:178:13
[INFO] [stdout]     |
[INFO] [stdout] 178 |             handle_trap(pid, child_status);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:229:17
[INFO] [stdout]     |
[INFO] [stdout] 229 |                 ptrace::sysemu_single(pid);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:231:17
[INFO] [stdout]     |
[INFO] [stdout] 231 |                 ptrace::sysemu(pid);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:411:13
[INFO] [stdout]     |
[INFO] [stdout] 411 |             copy_dir(entry.as_os_str().to_str().unwrap(), Path::new(target).join(entry.file_name().unwrap()).as_os_str().to_str().unwrap());
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:436:5
[INFO] [stdout]     |
[INFO] [stdout] 436 | /     mount::<Path, Path, str, str>(
[INFO] [stdout] 437 | |         Some(source_path),
[INFO] [stdout] 438 | |         target_path.as_path(),
[INFO] [stdout] 439 | |         Some("ext4"),
[INFO] [stdout] 440 | |         MsFlags::MS_BIND | MsFlags::MS_REC,
[INFO] [stdout] 441 | |         None,
[INFO] [stdout] 442 | |     );
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:471:21
[INFO] [stdout]     |
[INFO] [stdout] 471 |                     ptrace::detach(pid);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:489:17
[INFO] [stdout]     |
[INFO] [stdout] 489 |                 ptrace::setregs(pid, new_regs);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:499:17
[INFO] [stdout]     |
[INFO] [stdout] 499 |                 ptrace::setregs(pid, new_regs);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:507:17
[INFO] [stdout]     |
[INFO] [stdout] 507 |                 ptrace::setregs(pid, new_regs);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:552:13
[INFO] [stdout]     |
[INFO] [stdout] 552 |             ptrace::setregs(pid, child_regs);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/ptrace.rs:80:5
[INFO] [stdout]    |
[INFO] [stdout] 80 |     ptrace::syscall(pid, None);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/ptrace.rs:84:5
[INFO] [stdout]    |
[INFO] [stdout] 84 |     ptrace::step(pid, None);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/ptrace.rs:101:5
[INFO] [stdout]     |
[INFO] [stdout] 101 | /     Errno::result(
[INFO] [stdout] 102 | |         unsafe { libc::ptrace(31 as libc::c_uint, libc::pid_t::from(pid), std::ptr::null_mut::<libc::c_uint>(), std::ptr::null_mut::<libc::c_uint>()) }
[INFO] [stdout] 103 | |         // unsafe { libc::ptrace(24 as libc::c_uint, libc::pid_t::from(pid) as i32, std::ptr::null_mut::<std::ffi::c_void>(), std::ptr::null_mut::<std::ffi::c_void>()) }
[INFO] [stdout] 104 | |     )
[INFO] [stdout] 105 | |         .map(drop);
[INFO] [stdout]     | |___________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/ptrace.rs:110:5
[INFO] [stdout]     |
[INFO] [stdout] 110 | /     Errno::result(
[INFO] [stdout] 111 | |         unsafe { libc::ptrace(32 as libc::c_uint, libc::pid_t::from(pid), std::ptr::null_mut::<libc::c_uint>(), std::ptr::null_mut::<libc::c_uint>()) }
[INFO] [stdout] 112 | |     )
[INFO] [stdout] 113 | |         .map(drop);
[INFO] [stdout]     | |___________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/ptrace.rs:119:5
[INFO] [stdout]     |
[INFO] [stdout] 119 | /     Errno::result(
[INFO] [stdout] 120 | |         unsafe { libc::ptrace(6 as libc::c_uint, libc::pid_t::from(pid), addr as *mut libc::c_void, data as *mut libc::c_void) }
[INFO] [stdout] 121 | |     )
[INFO] [stdout] 122 | |         .map(drop);
[INFO] [stdout]     | |___________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 38 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 43 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 49 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.45s
[INFO] running `Command { std: "docker" "inspect" "92021cc4e36bb6f858aaf76433efb0104d327fbef33339e16d655e815a248b38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92021cc4e36bb6f858aaf76433efb0104d327fbef33339e16d655e815a248b38", kill_on_drop: false }`
[INFO] [stdout] 92021cc4e36bb6f858aaf76433efb0104d327fbef33339e16d655e815a248b38
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e9fe47eae2ccd0a1aa8ed950780e5f083aebf8c689b71180826a2a055eee57fb
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e9fe47eae2ccd0a1aa8ed950780e5f083aebf8c689b71180826a2a055eee57fb", kill_on_drop: false }`
[INFO] [stderr]    Compiling toy-container v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Stderr`
[INFO] [stdout]  --> src/container_pivot.rs:2:22
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{Write, Stderr};
[INFO] [stdout]   |                      ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `FileType`, `set_permissions`
[INFO] [stdout]  --> src/container_pivot.rs:4:37
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::fs::{self, copy, read_dir, FileType, set_permissions, remove_dir};
[INFO] [stdout]   |                                     ^^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `PermissionsExt`, `symlink`
[INFO] [stdout]  --> src/container_pivot.rs:5:25
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::os::unix::fs::{symlink, PermissionsExt};
[INFO] [stdout]   |                         ^^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `chroot`
[INFO] [stdout]  --> src/container_pivot.rs:8:45
[INFO] [stdout]   |
[INFO] [stdout] 8 | use nix::unistd::{Pid, getpid, sethostname, chroot, chdir, mkdir, pivot_root};
[INFO] [stdout]   |                                             ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `chdir`
[INFO] [stdout]  --> src/escaping_chroot.rs:2:32
[INFO] [stdout]   |
[INFO] [stdout] 2 | use nix::unistd::{Pid, chroot, chdir, mkdir};
[INFO] [stdout]   |                                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `escaping_chroot::escape_chroot`
[INFO] [stdout]   --> src/container_pivot.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use escaping_chroot::escape_chroot;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Stderr`
[INFO] [stdout]  --> src/container_1.rs:2:22
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{Write, Stderr};
[INFO] [stdout]   |                      ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `FileType`, `set_permissions`
[INFO] [stdout]  --> src/container_1.rs:4:37
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::fs::{self, copy, read_dir, FileType, set_permissions};
[INFO] [stdout]   |                                     ^^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `PermissionsExt`, `symlink`
[INFO] [stdout]  --> src/container_1.rs:5:25
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::os::unix::fs::{symlink, PermissionsExt};
[INFO] [stdout]   |                         ^^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/container_1.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 30 | /         loop {
[INFO] [stdout] 31 | |             sleep(Duration::from_secs(3));
[INFO] [stdout] 32 | |             spawn_sh("id", self_pid);
[INFO] [stdout] 33 | |             spawn_sh("ipcs", self_pid);
[INFO] [stdout] ...  |
[INFO] [stdout] 41 | |             // spawn_sh("ls -a ..", self_pid);
[INFO] [stdout] 42 | |         }
[INFO] [stdout]    | |_________- any code following this expression is unreachable
[INFO] [stdout] 43 |           return 0 as isize;
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufReader`, `Stderr`
[INFO] [stdout]  --> src/execution_trace_1.rs:2:22
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{Write, Stderr, BufReader, BufRead};
[INFO] [stdout]   |                      ^^^^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `FileType`, `set_permissions`
[INFO] [stdout]  --> src/execution_trace_1.rs:4:37
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::fs::{self, copy, read_dir, FileType, set_permissions, remove_dir};
[INFO] [stdout]   |                                     ^^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `PermissionsExt`, `symlink`
[INFO] [stdout]  --> src/execution_trace_1.rs:5:25
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::os::unix::fs::{symlink, PermissionsExt};
[INFO] [stdout]   |                         ^^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread::sleep`
[INFO] [stdout]  --> src/execution_trace_1.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::thread::sleep;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufReader`, `Stderr`
[INFO] [stdout]  --> src/executor_1.rs:2:22
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{Write, Stderr, BufReader, BufRead};
[INFO] [stdout]   |                      ^^^^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `FileType`, `set_permissions`
[INFO] [stdout]  --> src/executor_1.rs:4:37
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::fs::{self, copy, read_dir, FileType, set_permissions, remove_dir};
[INFO] [stdout]   |                                     ^^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `PermissionsExt`, `symlink`
[INFO] [stdout]  --> src/executor_1.rs:5:25
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::os::unix::fs::{symlink, PermissionsExt};
[INFO] [stdout]   |                         ^^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `chroot`
[INFO] [stdout]  --> src/executor_1.rs:8:45
[INFO] [stdout]   |
[INFO] [stdout] 8 | use nix::unistd::{Pid, getpid, sethostname, chroot, chdir, mkdir, pivot_root};
[INFO] [stdout]   |                                             ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RwLockReadGuard`
[INFO] [stdout]   --> src/executor_1.rs:14:25
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::sync::{RwLock, RwLockReadGuard, RwLockWriteGuard};
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `chroot`
[INFO] [stdout]  --> src/execution_trace_1.rs:8:45
[INFO] [stdout]   |
[INFO] [stdout] 8 | use nix::unistd::{Pid, getpid, sethostname, chroot, chdir, mkdir, pivot_root};
[INFO] [stdout]   |                                             ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]   --> src/execution_trace_1.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::time::Duration;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RwLockReadGuard`
[INFO] [stdout]   --> src/execution_trace_1.rs:17:25
[INFO] [stdout]    |
[INFO] [stdout] 17 | use std::sync::{RwLock, RwLockReadGuard, RwLockWriteGuard};
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/container_1.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 57 | /     loop {
[INFO] [stdout] 58 | |         exec_sh("uname -n", root_pid);
[INFO] [stdout] 59 | |         sleep(Duration::from_secs(3));
[INFO] [stdout] 60 | |     }
[INFO] [stdout]    | |_____- any code following this expression is unreachable
[INFO] [stdout] 61 |       Ok(())
[INFO] [stdout]    |       ^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufReader`, `BufWriter`, `Stderr`
[INFO] [stdout]  --> src/execution_multi_trace_1.rs:2:22
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{Write, Stderr, BufReader, BufRead, Read, BufWriter};
[INFO] [stdout]   |                      ^^^^^^  ^^^^^^^^^                 ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Child`
[INFO] [stdout]  --> src/execution_multi_trace_1.rs:3:36
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::process::{Command, Stdio, Child};
[INFO] [stdout]   |                                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `FileType`, `File`, `set_permissions`
[INFO] [stdout]  --> src/execution_multi_trace_1.rs:5:37
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::fs::{self, copy, read_dir, FileType, set_permissions, remove_dir, OpenOptions, File};
[INFO] [stdout]   |                                     ^^^^^^^^  ^^^^^^^^^^^^^^^                           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `OpenOptionsExt`, `PermissionsExt`, `symlink`
[INFO] [stdout]  --> src/execution_multi_trace_1.rs:6:25
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::os::unix::fs::{symlink, PermissionsExt, OpenOptionsExt};
[INFO] [stdout]   |                         ^^^^^^^  ^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AsRawFd`, `FromRawFd`
[INFO] [stdout]  --> src/execution_multi_trace_1.rs:7:25
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::os::unix::io::{AsRawFd, FromRawFd};
[INFO] [stdout]   |                         ^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread::sleep`
[INFO] [stdout]  --> src/execution_multi_trace_1.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::thread::sleep;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `chroot`
[INFO] [stdout]   --> src/execution_multi_trace_1.rs:10:45
[INFO] [stdout]    |
[INFO] [stdout] 10 | use nix::unistd::{Pid, getpid, sethostname, chroot, chdir, mkdir, pivot_root};
[INFO] [stdout]    |                                             ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]   --> src/execution_multi_trace_1.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::time::Duration;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RwLockReadGuard`
[INFO] [stdout]   --> src/execution_multi_trace_1.rs:19:25
[INFO] [stdout]    |
[INFO] [stdout] 19 | use std::sync::{RwLock, RwLockReadGuard, RwLockWriteGuard, Arc};
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:567:9
[INFO] [stdout]     |
[INFO] [stdout] 567 |         (count / (std::mem::size_of::<u64>() as u64))
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/container_pivot.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 49 | /         loop {
[INFO] [stdout] 50 | |             sleep(Duration::from_secs(3));
[INFO] [stdout] 51 | |             spawn_sh("id", self_pid);
[INFO] [stdout] 52 | |             spawn_sh("ipcs", self_pid);
[INFO] [stdout] ...  |
[INFO] [stdout] 60 | |             spawn_sh("ls -a .", self_pid);
[INFO] [stdout] 61 | |         }
[INFO] [stdout]    | |_________- any code following this expression is unreachable
[INFO] [stdout] 62 |           return 0 as isize;
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/container_pivot.rs:80:5
[INFO] [stdout]    |
[INFO] [stdout] 76 | /     loop {
[INFO] [stdout] 77 | |         exec_sh("uname -n", root_pid);
[INFO] [stdout] 78 | |         sleep(Duration::from_secs(3));
[INFO] [stdout] 79 | |     }
[INFO] [stdout]    | |_____- any code following this expression is unreachable
[INFO] [stdout] 80 |       Ok(())
[INFO] [stdout]    |       ^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufReader`, `BufWriter`, `Stderr`
[INFO] [stdout]  --> src/execution_trace_2.rs:2:22
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{Write, Stderr, BufReader, BufRead, Read, BufWriter};
[INFO] [stdout]   |                      ^^^^^^  ^^^^^^^^^                 ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `FileType`, `File`, `set_permissions`
[INFO] [stdout]  --> src/execution_trace_2.rs:4:37
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::fs::{self, copy, read_dir, FileType, set_permissions, remove_dir, OpenOptions, File};
[INFO] [stdout]   |                                     ^^^^^^^^  ^^^^^^^^^^^^^^^                           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `OpenOptionsExt`, `PermissionsExt`, `symlink`
[INFO] [stdout]  --> src/execution_trace_2.rs:5:25
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::os::unix::fs::{symlink, PermissionsExt, OpenOptionsExt};
[INFO] [stdout]   |                         ^^^^^^^  ^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AsRawFd`, `FromRawFd`
[INFO] [stdout]  --> src/execution_trace_2.rs:6:25
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::os::unix::io::{AsRawFd, FromRawFd};
[INFO] [stdout]   |                         ^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread::sleep`
[INFO] [stdout]  --> src/execution_trace_2.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::thread::sleep;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `chroot`
[INFO] [stdout]  --> src/execution_trace_2.rs:9:45
[INFO] [stdout]   |
[INFO] [stdout] 9 | use nix::unistd::{Pid, getpid, sethostname, chroot, chdir, mkdir, pivot_root};
[INFO] [stdout]   |                                             ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]   --> src/execution_trace_2.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use std::time::Duration;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RwLockReadGuard`
[INFO] [stdout]   --> src/execution_trace_2.rs:18:25
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::sync::{RwLock, RwLockReadGuard, RwLockWriteGuard, Arc};
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/execution_trace_2.rs:395:21
[INFO] [stdout]     |
[INFO] [stdout] 395 |                     (regs.rdx / (std::mem::size_of::<u64>() as u64))
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:138:9
[INFO] [stdout]     |
[INFO] [stdout] 134 | /         loop {
[INFO] [stdout] 135 | |             // sleep(Duration::from_secs(3));
[INFO] [stdout] 136 | |             // spawn_sh("ls -a", self_pid);
[INFO] [stdout] 137 | |         }
[INFO] [stdout]     | |_________- any code following this expression is unreachable
[INFO] [stdout] 138 |           return 0 as isize;
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/execution_trace_1.rs:119:9
[INFO] [stdout]     |
[INFO] [stdout] 115 | /         loop {
[INFO] [stdout] 116 | |             // sleep(Duration::from_secs(3));
[INFO] [stdout] 117 | |             // spawn_sh("ls -a", self_pid);
[INFO] [stdout] 118 | |         }
[INFO] [stdout]     | |_________- any code following this expression is unreachable
[INFO] [stdout] 119 |           return 0 as isize;
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/execution_trace_1.rs:201:5
[INFO] [stdout]     |
[INFO] [stdout] 140 | /     loop {
[INFO] [stdout] 141 | |         let status: WaitStatus = ptrace::wait_pid(pid).unwrap();
[INFO] [stdout] 142 | |         println!("status: {:?}", status);
[INFO] [stdout] 143 | |         let regs: user_regs_struct = ptrace::getregs(pid).unwrap();
[INFO] [stdout] ...   |
[INFO] [stdout] 199 | |         // sleep(Duration::from_secs(3));
[INFO] [stdout] 200 | |     }
[INFO] [stdout]     | |_____- any code following this expression is unreachable
[INFO] [stdout] 201 |       Ok(())
[INFO] [stdout]     |       ^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `dir`
[INFO] [stdout]    --> src/container_1.rs:156:4
[INFO] [stdout]     |
[INFO] [stdout] 156 | fn dir(path: &str) {
[INFO] [stdout]     |    ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/executor_1.rs:113:9
[INFO] [stdout]     |
[INFO] [stdout] 110 | /         loop {
[INFO] [stdout] 111 | |             // sleep(Duration::from_secs(3));
[INFO] [stdout] 112 | |         }
[INFO] [stdout]     | |_________- any code following this expression is unreachable
[INFO] [stdout] 113 |           return 0 as isize;
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/executor_1.rs:131:5
[INFO] [stdout]     |
[INFO] [stdout] 128 | /     loop {
[INFO] [stdout] 129 | |         sleep(Duration::from_secs(3));
[INFO] [stdout] 130 | |     }
[INFO] [stdout]     | |_____- any code following this expression is unreachable
[INFO] [stdout] 131 |       Ok(())
[INFO] [stdout]     |       ^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/container_1.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     prepare_bash();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/container_1.rs:144:13
[INFO] [stdout]     |
[INFO] [stdout] 144 |             copy_dir(entry.as_os_str().to_str().unwrap(), Path::new(target).join(entry.file_name().unwrap()).as_os_str().to_str().unwrap());
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/execution_trace_2.rs:136:9
[INFO] [stdout]     |
[INFO] [stdout] 132 | /         loop {
[INFO] [stdout] 133 | |             // sleep(Duration::from_secs(3));
[INFO] [stdout] 134 | |             // spawn_sh("ls -a", self_pid);
[INFO] [stdout] 135 | |         }
[INFO] [stdout]     | |_________- any code following this expression is unreachable
[INFO] [stdout] 136 |           return 0 as isize;
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufRead`
[INFO] [stdout]  --> src/execution_trace_1.rs:2:41
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{Write, Stderr, BufReader, BufRead};
[INFO] [stdout]   |                                         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `root_pid`
[INFO] [stdout]    --> src/execution_trace_1.rs:134:9
[INFO] [stdout]     |
[INFO] [stdout] 134 |     let root_pid = getpid();
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_root_pid`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `is_enter_stop` is never read
[INFO] [stdout]    --> src/execution_trace_1.rs:137:9
[INFO] [stdout]     |
[INFO] [stdout] 137 |     let mut is_enter_stop: bool = false;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `is_enter_stop` is never read
[INFO] [stdout]    --> src/execution_trace_1.rs:188:9
[INFO] [stdout]     |
[INFO] [stdout] 188 |         is_enter_stop = false;
[INFO] [stdout]     |         ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:561:5
[INFO] [stdout]     |
[INFO] [stdout] 520 | /     match status {
[INFO] [stdout] 521 | |         WaitStatus::PtraceEvent(pid, sig, int) => {
[INFO] [stdout] 522 | |             match sig {
[INFO] [stdout] 523 | |                 signal::SIGTRAP => {
[INFO] [stdout] ...   |
[INFO] [stdout] 559 | |         },
[INFO] [stdout] 560 | |     }
[INFO] [stdout]     | |_____- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 561 |       Ok(Some(false))
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufRead`
[INFO] [stdout]  --> src/executor_1.rs:2:41
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{Write, Stderr, BufReader, BufRead};
[INFO] [stdout]   |                                         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `root_pid`
[INFO] [stdout]    --> src/executor_1.rs:125:9
[INFO] [stdout]     |
[INFO] [stdout] 125 |     let root_pid = getpid();
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_root_pid`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `escape_chroot`
[INFO] [stdout]  --> src/escaping_chroot.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn escape_chroot(pid: Pid) {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `dir`
[INFO] [stdout]    --> src/container_pivot.rs:176:4
[INFO] [stdout]     |
[INFO] [stdout] 176 | fn dir(path: &str) {
[INFO] [stdout]     |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufRead`
[INFO] [stdout]  --> src/execution_multi_trace_1.rs:2:41
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{Write, Stderr, BufReader, BufRead, Read, BufWriter};
[INFO] [stdout]   |                                         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/execution_multi_trace_1.rs:2:50
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{Write, Stderr, BufReader, BufRead, Read, BufWriter};
[INFO] [stdout]   |                                                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/container_pivot.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         chdir("/root");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/container_pivot.rs:64:5
[INFO] [stdout]    |
[INFO] [stdout] 64 |     prepare_bash();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/container_pivot.rs:164:13
[INFO] [stdout]     |
[INFO] [stdout] 164 |             copy_dir(entry.as_os_str().to_str().unwrap(), Path::new(target).join(entry.file_name().unwrap()).as_os_str().to_str().unwrap());
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pid`
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:458:19
[INFO] [stdout]     |
[INFO] [stdout] 458 | fn handle_syscall(pid: Pid, status: WaitStatus, regs: user_regs_struct, prev_orig_rax: u64, root_pid: Pid) -> Result<Option<bool>> {
[INFO] [stdout]     |                   ^^^ help: if this is intentional, prefix it with an underscore: `_pid`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `prev_orig_rax`
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:458:73
[INFO] [stdout]     |
[INFO] [stdout] 458 | fn handle_syscall(pid: Pid, status: WaitStatus, regs: user_regs_struct, prev_orig_rax: u64, root_pid: Pid) -> Result<Option<bool>> {
[INFO] [stdout]     |                                                                         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_prev_orig_rax`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `root_pid`
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:458:93
[INFO] [stdout]     |
[INFO] [stdout] 458 | fn handle_syscall(pid: Pid, status: WaitStatus, regs: user_regs_struct, prev_orig_rax: u64, root_pid: Pid) -> Result<Option<bool>> {
[INFO] [stdout]     |                                                                                             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_root_pid`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `int`
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:521:43
[INFO] [stdout]     |
[INFO] [stdout] 521 |         WaitStatus::PtraceEvent(pid, sig, int) => {
[INFO] [stdout]     |                                           ^^^ help: if this is intentional, prefix it with an underscore: `_int`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:176:17
[INFO] [stdout]     |
[INFO] [stdout] 176 |             let mut child_regs: user_regs_struct = ptrace::getregs(pid).unwrap();
[INFO] [stdout]     |                 ----^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:187:13
[INFO] [stdout]     |
[INFO] [stdout] 187 |         let mut regs: user_regs_struct = ptrace::getregs(pid).unwrap();
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:193:21
[INFO] [stdout]     |
[INFO] [stdout] 193 |                 let mut contents = fs::read_to_string(read_guard.as_path()).unwrap();
[INFO] [stdout]     |                     ----^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:244:17
[INFO] [stdout]     |
[INFO] [stdout] 244 |             let mut regs: user_regs_struct = ptrace::getregs(pid).unwrap();
[INFO] [stdout]     |                 ----^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufRead`
[INFO] [stdout]  --> src/execution_trace_2.rs:2:41
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{Write, Stderr, BufReader, BufRead, Read, BufWriter};
[INFO] [stdout]   |                                         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/execution_trace_2.rs:2:50
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{Write, Stderr, BufReader, BufRead, Read, BufWriter};
[INFO] [stdout]   |                                                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `regs`
[INFO] [stdout]    --> src/execution_trace_2.rs:230:17
[INFO] [stdout]     |
[INFO] [stdout] 230 |             let mut regs: user_regs_struct = ptrace::getregs(pid).unwrap();
[INFO] [stdout]     |                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_regs`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pid`
[INFO] [stdout]    --> src/execution_trace_2.rs:367:19
[INFO] [stdout]     |
[INFO] [stdout] 367 | fn handle_syscall(pid: Pid, status: WaitStatus, regs: user_regs_struct, prev_orig_rax: u64, root_pid: Pid) -> Result<Option<bool>> {
[INFO] [stdout]     |                   ^^^ help: if this is intentional, prefix it with an underscore: `_pid`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `prev_orig_rax`
[INFO] [stdout]    --> src/execution_trace_2.rs:367:73
[INFO] [stdout]     |
[INFO] [stdout] 367 | fn handle_syscall(pid: Pid, status: WaitStatus, regs: user_regs_struct, prev_orig_rax: u64, root_pid: Pid) -> Result<Option<bool>> {
[INFO] [stdout]     |                                                                         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_prev_orig_rax`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `root_pid`
[INFO] [stdout]    --> src/execution_trace_2.rs:367:93
[INFO] [stdout]     |
[INFO] [stdout] 367 | fn handle_syscall(pid: Pid, status: WaitStatus, regs: user_regs_struct, prev_orig_rax: u64, root_pid: Pid) -> Result<Option<bool>> {
[INFO] [stdout]     |                                                                                             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_root_pid`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `dir`
[INFO] [stdout]    --> src/executor_1.rs:225:4
[INFO] [stdout]     |
[INFO] [stdout] 225 | fn dir(path: &str) {
[INFO] [stdout]     |    ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `traceme`
[INFO] [stdout]   --> src/ptrace.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn traceme() -> Result<()> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `detach`
[INFO] [stdout]   --> src/ptrace.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn detach(pid: Pid) -> Result<()> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `cont`
[INFO] [stdout]   --> src/ptrace.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn cont(pid: Pid) -> Result<()> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `set_emulate_option`
[INFO] [stdout]   --> src/ptrace.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub fn set_emulate_option(pid: Pid) -> Result<()> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `set_emulate_option_simple`
[INFO] [stdout]   --> src/ptrace.rs:58:8
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub fn set_emulate_option_simple(pid: Pid) -> Result<()> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `wait_all`
[INFO] [stdout]   --> src/ptrace.rs:73:8
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub fn wait_all() -> Result<WaitStatus> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `syscall_step`
[INFO] [stdout]   --> src/ptrace.rs:83:8
[INFO] [stdout]    |
[INFO] [stdout] 83 | pub fn syscall_step(pid: Pid) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `setregs`
[INFO] [stdout]   --> src/ptrace.rs:91:8
[INFO] [stdout]    |
[INFO] [stdout] 91 | pub fn setregs(pid: Pid, urs: user_regs_struct) -> Result<()> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sysemu`
[INFO] [stdout]    --> src/ptrace.rs:100:8
[INFO] [stdout]     |
[INFO] [stdout] 100 | pub fn sysemu(pid: Pid) -> Result<()> {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sysemu_single`
[INFO] [stdout]    --> src/ptrace.rs:109:8
[INFO] [stdout]     |
[INFO] [stdout] 109 | pub fn sysemu_single(pid: Pid) -> Result<()> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pokeuser`
[INFO] [stdout]    --> src/ptrace.rs:118:8
[INFO] [stdout]     |
[INFO] [stdout] 118 | pub fn pokeuser(pid: Pid, addr: u64, data: u64) -> Result<()> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_event`
[INFO] [stdout]    --> src/ptrace.rs:126:8
[INFO] [stdout]     |
[INFO] [stdout] 126 | pub fn get_event(pid: Pid) -> Result<i64> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_siginfo`
[INFO] [stdout]    --> src/ptrace.rs:131:8
[INFO] [stdout]     |
[INFO] [stdout] 131 | pub fn get_siginfo(pid: Pid) -> Result<libc::siginfo_t> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `dir`
[INFO] [stdout]    --> src/execution_trace_1.rs:295:4
[INFO] [stdout]     |
[INFO] [stdout] 295 | fn dir(path: &str) {
[INFO] [stdout]     |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/execution_trace_1.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 65 |         chdir("/root");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_trace_1.rs:102:13
[INFO] [stdout]     |
[INFO] [stdout] 102 |             mount_dir(&(&*MOUNT_DIR.read().unwrap()).as_ref().unwrap(), "target");
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_trace_1.rs:121:5
[INFO] [stdout]     |
[INFO] [stdout] 121 |     prepare_bash();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_trace_1.rs:132:5
[INFO] [stdout]     |
[INFO] [stdout] 132 |     ptrace::set_tracesysgood(pid);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_trace_1.rs:285:13
[INFO] [stdout]     |
[INFO] [stdout] 285 |             copy_dir(entry.as_os_str().to_str().unwrap(), Path::new(target).join(entry.file_name().unwrap()).as_os_str().to_str().unwrap());
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_trace_1.rs:310:5
[INFO] [stdout]     |
[INFO] [stdout] 310 | /     mount::<Path, Path, str, str>(
[INFO] [stdout] 311 | |         Some(source_path),
[INFO] [stdout] 312 | |         target_path.as_path(),
[INFO] [stdout] 313 | |         Some("ext4"),
[INFO] [stdout] 314 | |         MsFlags::MS_BIND | MsFlags::MS_REC,
[INFO] [stdout] 315 | |         None,
[INFO] [stdout] 316 | |     );
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/ptrace.rs:80:5
[INFO] [stdout]    |
[INFO] [stdout] 80 |     ptrace::syscall(pid, None);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/ptrace.rs:84:5
[INFO] [stdout]    |
[INFO] [stdout] 84 |     ptrace::step(pid, None);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/ptrace.rs:101:5
[INFO] [stdout]     |
[INFO] [stdout] 101 | /     Errno::result(
[INFO] [stdout] 102 | |         unsafe { libc::ptrace(31 as libc::c_uint, libc::pid_t::from(pid), std::ptr::null_mut::<libc::c_uint>(), std::ptr::null_mut::<libc::c_uint>()) }
[INFO] [stdout] 103 | |         // unsafe { libc::ptrace(24 as libc::c_uint, libc::pid_t::from(pid) as i32, std::ptr::null_mut::<std::ffi::c_void>(), std::ptr::null_mut::<std::ffi::c_void>()) }
[INFO] [stdout] 104 | |     )
[INFO] [stdout] 105 | |         .map(drop);
[INFO] [stdout]     | |___________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/ptrace.rs:110:5
[INFO] [stdout]     |
[INFO] [stdout] 110 | /     Errno::result(
[INFO] [stdout] 111 | |         unsafe { libc::ptrace(32 as libc::c_uint, libc::pid_t::from(pid), std::ptr::null_mut::<libc::c_uint>(), std::ptr::null_mut::<libc::c_uint>()) }
[INFO] [stdout] 112 | |     )
[INFO] [stdout] 113 | |         .map(drop);
[INFO] [stdout]     | |___________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/ptrace.rs:119:5
[INFO] [stdout]     |
[INFO] [stdout] 119 | /     Errno::result(
[INFO] [stdout] 120 | |         unsafe { libc::ptrace(6 as libc::c_uint, libc::pid_t::from(pid), addr as *mut libc::c_void, data as *mut libc::c_void) }
[INFO] [stdout] 121 | |     )
[INFO] [stdout] 122 | |         .map(drop);
[INFO] [stdout]     | |___________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/executor_1.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |         chdir("/root");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/executor_1.rs:97:13
[INFO] [stdout]    |
[INFO] [stdout] 97 |             mount_dir(&(&*MOUNT_DIR.read().unwrap()).as_ref().unwrap(), "target");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/executor_1.rs:115:5
[INFO] [stdout]     |
[INFO] [stdout] 115 |     prepare_bash();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/executor_1.rs:215:13
[INFO] [stdout]     |
[INFO] [stdout] 215 |             copy_dir(entry.as_os_str().to_str().unwrap(), Path::new(target).join(entry.file_name().unwrap()).as_os_str().to_str().unwrap());
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/executor_1.rs:240:5
[INFO] [stdout]     |
[INFO] [stdout] 240 | /     mount::<Path, Path, str, str>(
[INFO] [stdout] 241 | |         Some(source_path),
[INFO] [stdout] 242 | |         target_path.as_path(),
[INFO] [stdout] 243 | |         Some("ext4"),
[INFO] [stdout] 244 | |         MsFlags::MS_BIND | MsFlags::MS_REC,
[INFO] [stdout] 245 | |         None,
[INFO] [stdout] 246 | |     );
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:544:17
[INFO] [stdout]     |
[INFO] [stdout] 544 |             let mut child_regs: user_regs_struct = ptrace::getregs(pid).unwrap();
[INFO] [stdout]     |                 ----^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:550:17
[INFO] [stdout]     |
[INFO] [stdout] 550 |             let mut child_regs: user_regs_struct = ptrace::getregs(pid).unwrap();
[INFO] [stdout]     |                 ----^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/execution_trace_2.rs:174:13
[INFO] [stdout]     |
[INFO] [stdout] 174 |         let mut regs: user_regs_struct = ptrace::getregs(pid).unwrap();
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/execution_trace_2.rs:180:21
[INFO] [stdout]     |
[INFO] [stdout] 180 |                 let mut contents = fs::read_to_string(read_guard.as_path()).unwrap();
[INFO] [stdout]     |                     ----^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/execution_trace_2.rs:230:17
[INFO] [stdout]     |
[INFO] [stdout] 230 |             let mut regs: user_regs_struct = ptrace::getregs(pid).unwrap();
[INFO] [stdout]     |                 ----^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `cont`
[INFO] [stdout]   --> src/ptrace.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn cont(pid: Pid) -> Result<()> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `set_tracesysgood`
[INFO] [stdout]   --> src/ptrace.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub fn set_tracesysgood(pid: Pid) -> Result<()>  {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `set_emulate_option_simple`
[INFO] [stdout]   --> src/ptrace.rs:58:8
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub fn set_emulate_option_simple(pid: Pid) -> Result<()> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pokeuser`
[INFO] [stdout]    --> src/ptrace.rs:118:8
[INFO] [stdout]     |
[INFO] [stdout] 118 | pub fn pokeuser(pid: Pid, addr: u64, data: u64) -> Result<()> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `dir`
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:421:4
[INFO] [stdout]     |
[INFO] [stdout] 421 | fn dir(path: &str) {
[INFO] [stdout]     |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `make_fifo`
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:446:4
[INFO] [stdout]     |
[INFO] [stdout] 446 | fn make_fifo(file_path: &str, mode: Mode) -> Result<PathBuf> {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/execution_multi_trace_1.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |         chdir("/root");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:110:13
[INFO] [stdout]     |
[INFO] [stdout] 110 |             mount_dir(&(&*MOUNT_DIR.read().unwrap()).as_ref().unwrap(), "target");
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:140:5
[INFO] [stdout]     |
[INFO] [stdout] 140 |     prepare_bash();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:152:5
[INFO] [stdout]     |
[INFO] [stdout] 152 |     ptrace::set_emulate_option(pid);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:178:13
[INFO] [stdout]     |
[INFO] [stdout] 178 |             handle_trap(pid, child_status);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:229:17
[INFO] [stdout]     |
[INFO] [stdout] 229 |                 ptrace::sysemu_single(pid);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:231:17
[INFO] [stdout]     |
[INFO] [stdout] 231 |                 ptrace::sysemu(pid);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:411:13
[INFO] [stdout]     |
[INFO] [stdout] 411 |             copy_dir(entry.as_os_str().to_str().unwrap(), Path::new(target).join(entry.file_name().unwrap()).as_os_str().to_str().unwrap());
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:436:5
[INFO] [stdout]     |
[INFO] [stdout] 436 | /     mount::<Path, Path, str, str>(
[INFO] [stdout] 437 | |         Some(source_path),
[INFO] [stdout] 438 | |         target_path.as_path(),
[INFO] [stdout] 439 | |         Some("ext4"),
[INFO] [stdout] 440 | |         MsFlags::MS_BIND | MsFlags::MS_REC,
[INFO] [stdout] 441 | |         None,
[INFO] [stdout] 442 | |     );
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:471:21
[INFO] [stdout]     |
[INFO] [stdout] 471 |                     ptrace::detach(pid);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:489:17
[INFO] [stdout]     |
[INFO] [stdout] 489 |                 ptrace::setregs(pid, new_regs);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:499:17
[INFO] [stdout]     |
[INFO] [stdout] 499 |                 ptrace::setregs(pid, new_regs);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:507:17
[INFO] [stdout]     |
[INFO] [stdout] 507 |                 ptrace::setregs(pid, new_regs);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_multi_trace_1.rs:552:13
[INFO] [stdout]     |
[INFO] [stdout] 552 |             ptrace::setregs(pid, child_regs);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/ptrace.rs:80:5
[INFO] [stdout]    |
[INFO] [stdout] 80 |     ptrace::syscall(pid, None);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/ptrace.rs:84:5
[INFO] [stdout]    |
[INFO] [stdout] 84 |     ptrace::step(pid, None);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/ptrace.rs:101:5
[INFO] [stdout]     |
[INFO] [stdout] 101 | /     Errno::result(
[INFO] [stdout] 102 | |         unsafe { libc::ptrace(31 as libc::c_uint, libc::pid_t::from(pid), std::ptr::null_mut::<libc::c_uint>(), std::ptr::null_mut::<libc::c_uint>()) }
[INFO] [stdout] 103 | |         // unsafe { libc::ptrace(24 as libc::c_uint, libc::pid_t::from(pid) as i32, std::ptr::null_mut::<std::ffi::c_void>(), std::ptr::null_mut::<std::ffi::c_void>()) }
[INFO] [stdout] 104 | |     )
[INFO] [stdout] 105 | |         .map(drop);
[INFO] [stdout]     | |___________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/ptrace.rs:110:5
[INFO] [stdout]     |
[INFO] [stdout] 110 | /     Errno::result(
[INFO] [stdout] 111 | |         unsafe { libc::ptrace(32 as libc::c_uint, libc::pid_t::from(pid), std::ptr::null_mut::<libc::c_uint>(), std::ptr::null_mut::<libc::c_uint>()) }
[INFO] [stdout] 112 | |     )
[INFO] [stdout] 113 | |         .map(drop);
[INFO] [stdout]     | |___________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/ptrace.rs:119:5
[INFO] [stdout]     |
[INFO] [stdout] 119 | /     Errno::result(
[INFO] [stdout] 120 | |         unsafe { libc::ptrace(6 as libc::c_uint, libc::pid_t::from(pid), addr as *mut libc::c_void, data as *mut libc::c_void) }
[INFO] [stdout] 121 | |     )
[INFO] [stdout] 122 | |         .map(drop);
[INFO] [stdout]     | |___________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `traceme`
[INFO] [stdout]   --> src/ptrace.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn traceme() -> Result<()> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `cont`
[INFO] [stdout]   --> src/ptrace.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn cont(pid: Pid) -> Result<()> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `set_emulate_option`
[INFO] [stdout]   --> src/ptrace.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub fn set_emulate_option(pid: Pid) -> Result<()> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `set_emulate_option_simple`
[INFO] [stdout]   --> src/ptrace.rs:58:8
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub fn set_emulate_option_simple(pid: Pid) -> Result<()> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `pokeuser`
[INFO] [stdout]    --> src/ptrace.rs:118:8
[INFO] [stdout]     |
[INFO] [stdout] 118 | pub fn pokeuser(pid: Pid, addr: u64, data: u64) -> Result<()> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_event`
[INFO] [stdout]    --> src/ptrace.rs:126:8
[INFO] [stdout]     |
[INFO] [stdout] 126 | pub fn get_event(pid: Pid) -> Result<i64> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `dir`
[INFO] [stdout]    --> src/execution_trace_2.rs:330:4
[INFO] [stdout]     |
[INFO] [stdout] 330 | fn dir(path: &str) {
[INFO] [stdout]     |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `make_fifo`
[INFO] [stdout]    --> src/execution_trace_2.rs:355:4
[INFO] [stdout]     |
[INFO] [stdout] 355 | fn make_fifo(file_path: &str, mode: Mode) -> Result<PathBuf> {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/execution_trace_2.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |         chdir("/root");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_trace_2.rs:109:13
[INFO] [stdout]     |
[INFO] [stdout] 109 |             mount_dir(&(&*MOUNT_DIR.read().unwrap()).as_ref().unwrap(), "target");
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_trace_2.rs:138:5
[INFO] [stdout]     |
[INFO] [stdout] 138 |     prepare_bash();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_trace_2.rs:149:5
[INFO] [stdout]     |
[INFO] [stdout] 149 |     ptrace::set_tracesysgood(pid);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_trace_2.rs:216:17
[INFO] [stdout]     |
[INFO] [stdout] 216 |                 ptrace::sysemu_single(pid);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_trace_2.rs:218:17
[INFO] [stdout]     |
[INFO] [stdout] 218 |                 ptrace::sysemu(pid);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_trace_2.rs:320:13
[INFO] [stdout]     |
[INFO] [stdout] 320 |             copy_dir(entry.as_os_str().to_str().unwrap(), Path::new(target).join(entry.file_name().unwrap()).as_os_str().to_str().unwrap());
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_trace_2.rs:345:5
[INFO] [stdout]     |
[INFO] [stdout] 345 | /     mount::<Path, Path, str, str>(
[INFO] [stdout] 346 | |         Some(source_path),
[INFO] [stdout] 347 | |         target_path.as_path(),
[INFO] [stdout] 348 | |         Some("ext4"),
[INFO] [stdout] 349 | |         MsFlags::MS_BIND | MsFlags::MS_REC,
[INFO] [stdout] 350 | |         None,
[INFO] [stdout] 351 | |     );
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_trace_2.rs:377:21
[INFO] [stdout]     |
[INFO] [stdout] 377 |                     ptrace::detach(pid);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_trace_2.rs:413:17
[INFO] [stdout]     |
[INFO] [stdout] 413 |                 ptrace::setregs(pid, new_regs);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/execution_trace_2.rs:421:17
[INFO] [stdout]     |
[INFO] [stdout] 421 |                 ptrace::setregs(pid, new_regs);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/ptrace.rs:80:5
[INFO] [stdout]    |
[INFO] [stdout] 80 |     ptrace::syscall(pid, None);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/ptrace.rs:84:5
[INFO] [stdout]    |
[INFO] [stdout] 84 |     ptrace::step(pid, None);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/ptrace.rs:101:5
[INFO] [stdout]     |
[INFO] [stdout] 101 | /     Errno::result(
[INFO] [stdout] 102 | |         unsafe { libc::ptrace(31 as libc::c_uint, libc::pid_t::from(pid), std::ptr::null_mut::<libc::c_uint>(), std::ptr::null_mut::<libc::c_uint>()) }
[INFO] [stdout] 103 | |         // unsafe { libc::ptrace(24 as libc::c_uint, libc::pid_t::from(pid) as i32, std::ptr::null_mut::<std::ffi::c_void>(), std::ptr::null_mut::<std::ffi::c_void>()) }
[INFO] [stdout] 104 | |     )
[INFO] [stdout] 105 | |         .map(drop);
[INFO] [stdout]     | |___________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/ptrace.rs:110:5
[INFO] [stdout]     |
[INFO] [stdout] 110 | /     Errno::result(
[INFO] [stdout] 111 | |         unsafe { libc::ptrace(32 as libc::c_uint, libc::pid_t::from(pid), std::ptr::null_mut::<libc::c_uint>(), std::ptr::null_mut::<libc::c_uint>()) }
[INFO] [stdout] 112 | |     )
[INFO] [stdout] 113 | |         .map(drop);
[INFO] [stdout]     | |___________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/ptrace.rs:119:5
[INFO] [stdout]     |
[INFO] [stdout] 119 | /     Errno::result(
[INFO] [stdout] 120 | |         unsafe { libc::ptrace(6 as libc::c_uint, libc::pid_t::from(pid), addr as *mut libc::c_void, data as *mut libc::c_void) }
[INFO] [stdout] 121 | |     )
[INFO] [stdout] 122 | |         .map(drop);
[INFO] [stdout]     | |___________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 38 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 49 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.13s
[INFO] [stdout] warning: 43 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e9fe47eae2ccd0a1aa8ed950780e5f083aebf8c689b71180826a2a055eee57fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9fe47eae2ccd0a1aa8ed950780e5f083aebf8c689b71180826a2a055eee57fb", kill_on_drop: false }`
[INFO] [stdout] e9fe47eae2ccd0a1aa8ed950780e5f083aebf8c689b71180826a2a055eee57fb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 880319c530c678a2dd42f18f96e821909e64dc61ac2016d8007580df23a017db
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "880319c530c678a2dd42f18f96e821909e64dc61ac2016d8007580df23a017db", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `Stderr`
[INFO] [stderr]  --> src/container_1.rs:2:22
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io::{Write, Stderr};
[INFO] [stderr]   |                      ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `FileType`, `set_permissions`
[INFO] [stderr]  --> src/container_1.rs:4:37
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::fs::{self, copy, read_dir, FileType, set_permissions};
[INFO] [stderr]   |                                     ^^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `PermissionsExt`, `symlink`
[INFO] [stderr]  --> src/container_1.rs:5:25
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::os::unix::fs::{symlink, PermissionsExt};
[INFO] [stderr]   |                         ^^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> src/container_1.rs:43:9
[INFO] [stderr]    |
[INFO] [stderr] 30 | /         loop {
[INFO] [stderr] 31 | |             sleep(Duration::from_secs(3));
[INFO] [stderr] 32 | |             spawn_sh("id", self_pid);
[INFO] [stderr] 33 | |             spawn_sh("ipcs", self_pid);
[INFO] [stderr] ...  |
[INFO] [stderr] 41 | |             // spawn_sh("ls -a ..", self_pid);
[INFO] [stderr] 42 | |         }
[INFO] [stderr]    | |_________- any code following this expression is unreachable
[INFO] [stderr] 43 |           return 0 as isize;
[INFO] [stderr]    |           ^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> src/container_1.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 57 | /     loop {
[INFO] [stderr] 58 | |         exec_sh("uname -n", root_pid);
[INFO] [stderr] 59 | |         sleep(Duration::from_secs(3));
[INFO] [stderr] 60 | |     }
[INFO] [stderr]    | |_____- any code following this expression is unreachable
[INFO] [stderr] 61 |       Ok(())
[INFO] [stderr]    |       ^^^^^^ unreachable expression
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dir`
[INFO] [stderr]    --> src/container_1.rs:156:4
[INFO] [stderr]     |
[INFO] [stderr] 156 | fn dir(path: &str) {
[INFO] [stderr]     |    ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/container_1.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 |     prepare_bash();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/container_1.rs:144:13
[INFO] [stderr]     |
[INFO] [stderr] 144 |             copy_dir(entry.as_os_str().to_str().unwrap(), Path::new(target).join(entry.file_name().unwrap()).as_os_str().to_str().unwrap());
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BufReader`, `Stderr`
[INFO] [stderr]  --> src/execution_trace_1.rs:2:22
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io::{Write, Stderr, BufReader, BufRead};
[INFO] [stderr]   |                      ^^^^^^  ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `FileType`, `set_permissions`
[INFO] [stderr]  --> src/execution_trace_1.rs:4:37
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::fs::{self, copy, read_dir, FileType, set_permissions, remove_dir};
[INFO] [stderr]   |                                     ^^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `PermissionsExt`, `symlink`
[INFO] [stderr]  --> src/execution_trace_1.rs:5:25
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::os::unix::fs::{symlink, PermissionsExt};
[INFO] [stderr]   |                         ^^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::thread::sleep`
[INFO] [stderr]  --> src/execution_trace_1.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::thread::sleep;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BufReader`, `BufWriter`, `Stderr`
[INFO] [stderr]  --> src/execution_trace_2.rs:2:22
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io::{Write, Stderr, BufReader, BufRead, Read, BufWriter};
[INFO] [stderr]   |                      ^^^^^^  ^^^^^^^^^                 ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `chroot`
[INFO] [stderr]  --> src/execution_trace_1.rs:8:45
[INFO] [stderr]   |
[INFO] [stderr] 8 | use nix::unistd::{Pid, getpid, sethostname, chroot, chdir, mkdir, pivot_root};
[INFO] [stderr]   |                                             ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::time::Duration`
[INFO] [stderr]   --> src/execution_trace_1.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | use std::time::Duration;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `FileType`, `File`, `set_permissions`
[INFO] [stderr]  --> src/execution_trace_2.rs:4:37
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::fs::{self, copy, read_dir, FileType, set_permissions, remove_dir, OpenOptions, File};
[INFO] [stderr]   |                                     ^^^^^^^^  ^^^^^^^^^^^^^^^                           ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `RwLockReadGuard`
[INFO] [stderr]   --> src/execution_trace_1.rs:17:25
[INFO] [stderr]    |
[INFO] [stderr] 17 | use std::sync::{RwLock, RwLockReadGuard, RwLockWriteGuard};
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `OpenOptionsExt`, `PermissionsExt`, `symlink`
[INFO] [stderr]  --> src/execution_trace_2.rs:5:25
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::os::unix::fs::{symlink, PermissionsExt, OpenOptionsExt};
[INFO] [stderr]   |                         ^^^^^^^  ^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `AsRawFd`, `FromRawFd`
[INFO] [stderr]  --> src/execution_trace_2.rs:6:25
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::os::unix::io::{AsRawFd, FromRawFd};
[INFO] [stderr]   |                         ^^^^^^^  ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]    --> src/execution_trace_1.rs:119:9
[INFO] [stderr]     |
[INFO] [stderr] 115 | /         loop {
[INFO] [stderr] 116 | |             // sleep(Duration::from_secs(3));
[INFO] [stderr] 117 | |             // spawn_sh("ls -a", self_pid);
[INFO] [stderr] 118 | |         }
[INFO] [stderr]     | |_________- any code following this expression is unreachable
[INFO] [stderr] 119 |           return 0 as isize;
[INFO] [stderr]     |           ^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::thread::sleep`
[INFO] [stderr]  --> src/execution_trace_2.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::thread::sleep;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `chroot`
[INFO] [stderr]  --> src/execution_trace_2.rs:9:45
[INFO] [stderr]   |
[INFO] [stderr] 9 | use nix::unistd::{Pid, getpid, sethostname, chroot, chdir, mkdir, pivot_root};
[INFO] [stderr]   |                                             ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::time::Duration`
[INFO] [stderr]   --> src/execution_trace_2.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | use std::time::Duration;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `RwLockReadGuard`
[INFO] [stderr]   --> src/execution_trace_2.rs:18:25
[INFO] [stderr]    |
[INFO] [stderr] 18 | use std::sync::{RwLock, RwLockReadGuard, RwLockWriteGuard, Arc};
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/execution_trace_2.rs:395:21
[INFO] [stderr]     |
[INFO] [stderr] 395 |                     (regs.rdx / (std::mem::size_of::<u64>() as u64))
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/execution_trace_1.rs:201:5
[INFO] [stderr]     |
[INFO] [stderr] 140 | /     loop {
[INFO] [stderr] 141 | |         let status: WaitStatus = ptrace::wait_pid(pid).unwrap();
[INFO] [stderr] 142 | |         println!("status: {:?}", status);
[INFO] [stderr] 143 | |         let regs: user_regs_struct = ptrace::getregs(pid).unwrap();
[INFO] [stderr] ...   |
[INFO] [stderr] 199 | |         // sleep(Duration::from_secs(3));
[INFO] [stderr] 200 | |     }
[INFO] [stderr]     | |_____- any code following this expression is unreachable
[INFO] [stderr] 201 |       Ok(())
[INFO] [stderr]     |       ^^^^^^ unreachable expression
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `BufRead`
[INFO] [stderr]  --> src/execution_trace_1.rs:2:41
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io::{Write, Stderr, BufReader, BufRead};
[INFO] [stderr]   |                                         ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `root_pid`
[INFO] [stderr]    --> src/execution_trace_1.rs:134:9
[INFO] [stderr]     |
[INFO] [stderr] 134 |     let root_pid = getpid();
[INFO] [stderr]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_root_pid`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `is_enter_stop` is never read
[INFO] [stderr]    --> src/execution_trace_1.rs:137:9
[INFO] [stderr]     |
[INFO] [stderr] 137 |     let mut is_enter_stop: bool = false;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `is_enter_stop` is never read
[INFO] [stderr]    --> src/execution_trace_1.rs:188:9
[INFO] [stderr]     |
[INFO] [stderr] 188 |         is_enter_stop = false;
[INFO] [stderr]     |         ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `traceme`
[INFO] [stderr]   --> src/ptrace.rs:13:8
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub fn traceme() -> Result<()> {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `detach`
[INFO] [stderr]   --> src/ptrace.rs:18:8
[INFO] [stderr]    |
[INFO] [stderr] 18 | pub fn detach(pid: Pid) -> Result<()> {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `cont`
[INFO] [stderr]   --> src/ptrace.rs:23:8
[INFO] [stderr]    |
[INFO] [stderr] 23 | pub fn cont(pid: Pid) -> Result<()> {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `set_emulate_option`
[INFO] [stderr]   --> src/ptrace.rs:43:8
[INFO] [stderr]    |
[INFO] [stderr] 43 | pub fn set_emulate_option(pid: Pid) -> Result<()> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `set_emulate_option_simple`
[INFO] [stderr]   --> src/ptrace.rs:58:8
[INFO] [stderr]    |
[INFO] [stderr] 58 | pub fn set_emulate_option_simple(pid: Pid) -> Result<()> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `wait_all`
[INFO] [stderr]   --> src/ptrace.rs:73:8
[INFO] [stderr]    |
[INFO] [stderr] 73 | pub fn wait_all() -> Result<WaitStatus> {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `syscall_step`
[INFO] [stderr]   --> src/ptrace.rs:83:8
[INFO] [stderr]    |
[INFO] [stderr] 83 | pub fn syscall_step(pid: Pid) {
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `setregs`
[INFO] [stderr]   --> src/ptrace.rs:91:8
[INFO] [stderr]    |
[INFO] [stderr] 91 | pub fn setregs(pid: Pid, urs: user_regs_struct) -> Result<()> {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sysemu`
[INFO] [stderr]    --> src/ptrace.rs:100:8
[INFO] [stderr]     |
[INFO] [stderr] 100 | pub fn sysemu(pid: Pid) -> Result<()> {
[INFO] [stderr]     |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Stderr`
[INFO] [stderr]  --> src/container_pivot.rs:2:22
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io::{Write, Stderr};
[INFO] [stderr]   |                      ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `FileType`, `set_permissions`
[INFO] [stderr]  --> src/container_pivot.rs:4:37
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::fs::{self, copy, read_dir, FileType, set_permissions, remove_dir};
[INFO] [stderr]   |                                     ^^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `PermissionsExt`, `symlink`
[INFO] [stderr]  --> src/container_pivot.rs:5:25
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::os::unix::fs::{symlink, PermissionsExt};
[INFO] [stderr]   |                         ^^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `chroot`
[INFO] [stderr]  --> src/container_pivot.rs:8:45
[INFO] [stderr]   |
[INFO] [stderr] 8 | use nix::unistd::{Pid, getpid, sethostname, chroot, chdir, mkdir, pivot_root};
[INFO] [stderr]   |                                             ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `chdir`
[INFO] [stderr]  --> src/escaping_chroot.rs:2:32
[INFO] [stderr]   |
[INFO] [stderr] 2 | use nix::unistd::{Pid, chroot, chdir, mkdir};
[INFO] [stderr]   |                                ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `escaping_chroot::escape_chroot`
[INFO] [stderr]   --> src/container_pivot.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 | use escaping_chroot::escape_chroot;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> src/container_pivot.rs:62:9
[INFO] [stderr]    |
[INFO] [stderr] 49 | /         loop {
[INFO] [stderr] 50 | |             sleep(Duration::from_secs(3));
[INFO] [stderr] 51 | |             spawn_sh("id", self_pid);
[INFO] [stderr] 52 | |             spawn_sh("ipcs", self_pid);
[INFO] [stderr] ...  |
[INFO] [stderr] 60 | |             spawn_sh("ls -a .", self_pid);
[INFO] [stderr] 61 | |         }
[INFO] [stderr]    | |_________- any code following this expression is unreachable
[INFO] [stderr] 62 |           return 0 as isize;
[INFO] [stderr]    |           ^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> src/container_pivot.rs:80:5
[INFO] [stderr]    |
[INFO] [stderr] 76 | /     loop {
[INFO] [stderr] 77 | |         exec_sh("uname -n", root_pid);
[INFO] [stderr] 78 | |         sleep(Duration::from_secs(3));
[INFO] [stderr] 79 | |     }
[INFO] [stderr]    | |_____- any code following this expression is unreachable
[INFO] [stderr] 80 |       Ok(())
[INFO] [stderr]    |       ^^^^^^ unreachable expression
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `escape_chroot`
[INFO] [stderr]  --> src/escaping_chroot.rs:5:8
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn escape_chroot(pid: Pid) {
[INFO] [stderr]   |        ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dir`
[INFO] [stderr]    --> src/container_pivot.rs:176:4
[INFO] [stderr]     |
[INFO] [stderr] 176 | fn dir(path: &str) {
[INFO] [stderr]     |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/container_pivot.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         chdir("/root");
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/container_pivot.rs:64:5
[INFO] [stderr]    |
[INFO] [stderr] 64 |     prepare_bash();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/container_pivot.rs:164:13
[INFO] [stderr]     |
[INFO] [stderr] 164 |             copy_dir(entry.as_os_str().to_str().unwrap(), Path::new(target).join(entry.file_name().unwrap()).as_os_str().to_str().unwrap());
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 13 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]    --> src/execution_trace_2.rs:136:9
[INFO] [stderr]     |
[INFO] [stderr] 132 | /         loop {
[INFO] [stderr] 133 | |             // sleep(Duration::from_secs(3));
[INFO] [stderr] 134 | |             // spawn_sh("ls -a", self_pid);
[INFO] [stderr] 135 | |         }
[INFO] [stderr]     | |_________- any code following this expression is unreachable
[INFO] [stderr] 136 |           return 0 as isize;
[INFO] [stderr]     |           ^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `BufRead`
[INFO] [stderr]  --> src/execution_trace_2.rs:2:41
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io::{Write, Stderr, BufReader, BufRead, Read, BufWriter};
[INFO] [stderr]   |                                         ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BufReader`, `Stderr`
[INFO] [stderr]  --> src/executor_1.rs:2:22
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io::{Write, Stderr, BufReader, BufRead};
[INFO] [stderr]   |                      ^^^^^^  ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Read`
[INFO] [stderr]  --> src/execution_trace_2.rs:2:50
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io::{Write, Stderr, BufReader, BufRead, Read, BufWriter};
[INFO] [stderr]   |                                                  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sysemu_single`
[INFO] [stderr]    --> src/ptrace.rs:109:8
[INFO] [stderr]     |
[INFO] [stderr] 109 | pub fn sysemu_single(pid: Pid) -> Result<()> {
[INFO] [stderr]     |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `FileType`, `set_permissions`
[INFO] [stderr]  --> src/executor_1.rs:4:37
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::fs::{self, copy, read_dir, FileType, set_permissions, remove_dir};
[INFO] [stderr]   |                                     ^^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `PermissionsExt`, `symlink`
[INFO] [stderr]  --> src/executor_1.rs:5:25
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::os::unix::fs::{symlink, PermissionsExt};
[INFO] [stderr]   |                         ^^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `chroot`
[INFO] [stderr]  --> src/executor_1.rs:8:45
[INFO] [stderr]   |
[INFO] [stderr] 8 | use nix::unistd::{Pid, getpid, sethostname, chroot, chdir, mkdir, pivot_root};
[INFO] [stderr]   |                                             ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `RwLockReadGuard`
[INFO] [stderr]   --> src/executor_1.rs:14:25
[INFO] [stderr]    |
[INFO] [stderr] 14 | use std::sync::{RwLock, RwLockReadGuard, RwLockWriteGuard};
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `regs`
[INFO] [stderr]    --> src/execution_trace_2.rs:230:17
[INFO] [stderr]     |
[INFO] [stderr] 230 |             let mut regs: user_regs_struct = ptrace::getregs(pid).unwrap();
[INFO] [stderr]     |                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_regs`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]    --> src/executor_1.rs:113:9
[INFO] [stderr]     |
[INFO] [stderr] 110 | /         loop {
[INFO] [stderr] 111 | |             // sleep(Duration::from_secs(3));
[INFO] [stderr] 112 | |         }
[INFO] [stderr]     | |_________- any code following this expression is unreachable
[INFO] [stderr] 113 |           return 0 as isize;
[INFO] [stderr]     |           ^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/executor_1.rs:131:5
[INFO] [stderr]     |
[INFO] [stderr] 128 | /     loop {
[INFO] [stderr] 129 | |         sleep(Duration::from_secs(3));
[INFO] [stderr] 130 | |     }
[INFO] [stderr]     | |_____- any code following this expression is unreachable
[INFO] [stderr] 131 |       Ok(())
[INFO] [stderr]     |       ^^^^^^ unreachable expression
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `BufRead`
[INFO] [stderr]  --> src/executor_1.rs:2:41
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io::{Write, Stderr, BufReader, BufRead};
[INFO] [stderr]   |                                         ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `pid`
[INFO] [stderr]    --> src/execution_trace_2.rs:367:19
[INFO] [stderr]     |
[INFO] [stderr] 367 | fn handle_syscall(pid: Pid, status: WaitStatus, regs: user_regs_struct, prev_orig_rax: u64, root_pid: Pid) -> Result<Option<bool>> {
[INFO] [stderr]     |                   ^^^ help: if this is intentional, prefix it with an underscore: `_pid`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `root_pid`
[INFO] [stderr]    --> src/executor_1.rs:125:9
[INFO] [stderr]     |
[INFO] [stderr] 125 |     let root_pid = getpid();
[INFO] [stderr]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_root_pid`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dir`
[INFO] [stderr]    --> src/executor_1.rs:225:4
[INFO] [stderr]     |
[INFO] [stderr] 225 | fn dir(path: &str) {
[INFO] [stderr]     |    ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/executor_1.rs:60:9
[INFO] [stderr]    |
[INFO] [stderr] 60 |         chdir("/root");
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `prev_orig_rax`
[INFO] [stderr]    --> src/execution_trace_2.rs:367:73
[INFO] [stderr]     |
[INFO] [stderr] 367 | fn handle_syscall(pid: Pid, status: WaitStatus, regs: user_regs_struct, prev_orig_rax: u64, root_pid: Pid) -> Result<Option<bool>> {
[INFO] [stderr]     |                                                                         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_prev_orig_rax`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/executor_1.rs:97:13
[INFO] [stderr]    |
[INFO] [stderr] 97 |             mount_dir(&(&*MOUNT_DIR.read().unwrap()).as_ref().unwrap(), "target");
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/executor_1.rs:115:5
[INFO] [stderr]     |
[INFO] [stderr] 115 |     prepare_bash();
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `root_pid`
[INFO] [stderr]    --> src/execution_trace_2.rs:367:93
[INFO] [stderr]     |
[INFO] [stderr] 367 | fn handle_syscall(pid: Pid, status: WaitStatus, regs: user_regs_struct, prev_orig_rax: u64, root_pid: Pid) -> Result<Option<bool>> {
[INFO] [stderr]     |                                                                                             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_root_pid`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/executor_1.rs:215:13
[INFO] [stderr]     |
[INFO] [stderr] 215 |             copy_dir(entry.as_os_str().to_str().unwrap(), Path::new(target).join(entry.file_name().unwrap()).as_os_str().to_str().unwrap());
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/execution_trace_2.rs:174:13
[INFO] [stderr]     |
[INFO] [stderr] 174 |         let mut regs: user_regs_struct = ptrace::getregs(pid).unwrap();
[INFO] [stderr]     |             ----^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/executor_1.rs:240:5
[INFO] [stderr]     |
[INFO] [stderr] 240 | /     mount::<Path, Path, str, str>(
[INFO] [stderr] 241 | |         Some(source_path),
[INFO] [stderr] 242 | |         target_path.as_path(),
[INFO] [stderr] 243 | |         Some("ext4"),
[INFO] [stderr] 244 | |         MsFlags::MS_BIND | MsFlags::MS_REC,
[INFO] [stderr] 245 | |         None,
[INFO] [stderr] 246 | |     );
[INFO] [stderr]     | |______^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 15 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `pokeuser`
[INFO] [stderr]    --> src/ptrace.rs:118:8
[INFO] [stderr]     |
[INFO] [stderr] 118 | pub fn pokeuser(pid: Pid, addr: u64, data: u64) -> Result<()> {
[INFO] [stderr]     |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_event`
[INFO] [stderr]    --> src/ptrace.rs:126:8
[INFO] [stderr]     |
[INFO] [stderr] 126 | pub fn get_event(pid: Pid) -> Result<i64> {
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_siginfo`
[INFO] [stderr]    --> src/ptrace.rs:131:8
[INFO] [stderr]     |
[INFO] [stderr] 131 | pub fn get_siginfo(pid: Pid) -> Result<libc::siginfo_t> {
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BufReader`, `BufWriter`, `Stderr`
[INFO] [stderr]  --> src/execution_multi_trace_1.rs:2:22
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io::{Write, Stderr, BufReader, BufRead, Read, BufWriter};
[INFO] [stderr]   |                      ^^^^^^  ^^^^^^^^^                 ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Child`
[INFO] [stderr]  --> src/execution_multi_trace_1.rs:3:36
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::process::{Command, Stdio, Child};
[INFO] [stderr]   |                                    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `FileType`, `File`, `set_permissions`
[INFO] [stderr]  --> src/execution_multi_trace_1.rs:5:37
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::fs::{self, copy, read_dir, FileType, set_permissions, remove_dir, OpenOptions, File};
[INFO] [stderr]   |                                     ^^^^^^^^  ^^^^^^^^^^^^^^^                           ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `OpenOptionsExt`, `PermissionsExt`, `symlink`
[INFO] [stderr]  --> src/execution_multi_trace_1.rs:6:25
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::os::unix::fs::{symlink, PermissionsExt, OpenOptionsExt};
[INFO] [stderr]   |                         ^^^^^^^  ^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `AsRawFd`, `FromRawFd`
[INFO] [stderr]  --> src/execution_multi_trace_1.rs:7:25
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::os::unix::io::{AsRawFd, FromRawFd};
[INFO] [stderr]   |                         ^^^^^^^  ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::thread::sleep`
[INFO] [stderr]  --> src/execution_multi_trace_1.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::thread::sleep;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `chroot`
[INFO] [stderr]   --> src/execution_multi_trace_1.rs:10:45
[INFO] [stderr]    |
[INFO] [stderr] 10 | use nix::unistd::{Pid, getpid, sethostname, chroot, chdir, mkdir, pivot_root};
[INFO] [stderr]    |                                             ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::time::Duration`
[INFO] [stderr]   --> src/execution_multi_trace_1.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 | use std::time::Duration;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `RwLockReadGuard`
[INFO] [stderr]   --> src/execution_multi_trace_1.rs:19:25
[INFO] [stderr]    |
[INFO] [stderr] 19 | use std::sync::{RwLock, RwLockReadGuard, RwLockWriteGuard, Arc};
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/execution_multi_trace_1.rs:567:9
[INFO] [stderr]     |
[INFO] [stderr] 567 |         (count / (std::mem::size_of::<u64>() as u64))
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]    --> src/execution_multi_trace_1.rs:138:9
[INFO] [stderr]     |
[INFO] [stderr] 134 | /         loop {
[INFO] [stderr] 135 | |             // sleep(Duration::from_secs(3));
[INFO] [stderr] 136 | |             // spawn_sh("ls -a", self_pid);
[INFO] [stderr] 137 | |         }
[INFO] [stderr]     | |_________- any code following this expression is unreachable
[INFO] [stderr] 138 |           return 0 as isize;
[INFO] [stderr]     |           ^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/execution_multi_trace_1.rs:561:5
[INFO] [stderr]     |
[INFO] [stderr] 520 | /     match status {
[INFO] [stderr] 521 | |         WaitStatus::PtraceEvent(pid, sig, int) => {
[INFO] [stderr] 522 | |             match sig {
[INFO] [stderr] 523 | |                 signal::SIGTRAP => {
[INFO] [stderr] ...   |
[INFO] [stderr] 559 | |         },
[INFO] [stderr] 560 | |     }
[INFO] [stderr]     | |_____- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stderr] 561 |       Ok(Some(false))
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `BufRead`
[INFO] [stderr]  --> src/execution_multi_trace_1.rs:2:41
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io::{Write, Stderr, BufReader, BufRead, Read, BufWriter};
[INFO] [stderr]   |                                         ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Read`
[INFO] [stderr]  --> src/execution_multi_trace_1.rs:2:50
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io::{Write, Stderr, BufReader, BufRead, Read, BufWriter};
[INFO] [stderr]   |                                                  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `pid`
[INFO] [stderr]    --> src/execution_multi_trace_1.rs:458:19
[INFO] [stderr]     |
[INFO] [stderr] 458 | fn handle_syscall(pid: Pid, status: WaitStatus, regs: user_regs_struct, prev_orig_rax: u64, root_pid: Pid) -> Result<Option<bool>> {
[INFO] [stderr]     |                   ^^^ help: if this is intentional, prefix it with an underscore: `_pid`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `prev_orig_rax`
[INFO] [stderr]    --> src/execution_multi_trace_1.rs:458:73
[INFO] [stderr]     |
[INFO] [stderr] 458 | fn handle_syscall(pid: Pid, status: WaitStatus, regs: user_regs_struct, prev_orig_rax: u64, root_pid: Pid) -> Result<Option<bool>> {
[INFO] [stderr]     |                                                                         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_prev_orig_rax`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `root_pid`
[INFO] [stderr]    --> src/execution_multi_trace_1.rs:458:93
[INFO] [stderr]     |
[INFO] [stderr] 458 | fn handle_syscall(pid: Pid, status: WaitStatus, regs: user_regs_struct, prev_orig_rax: u64, root_pid: Pid) -> Result<Option<bool>> {
[INFO] [stderr]     |                                                                                             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_root_pid`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `int`
[INFO] [stderr]    --> src/execution_multi_trace_1.rs:521:43
[INFO] [stderr]     |
[INFO] [stderr] 521 |         WaitStatus::PtraceEvent(pid, sig, int) => {
[INFO] [stderr]     |                                           ^^^ help: if this is intentional, prefix it with an underscore: `_int`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/execution_multi_trace_1.rs:176:17
[INFO] [stderr]     |
[INFO] [stderr] 176 |             let mut child_regs: user_regs_struct = ptrace::getregs(pid).unwrap();
[INFO] [stderr]     |                 ----^^^^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/execution_multi_trace_1.rs:187:13
[INFO] [stderr]     |
[INFO] [stderr] 187 |         let mut regs: user_regs_struct = ptrace::getregs(pid).unwrap();
[INFO] [stderr]     |             ----^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/execution_multi_trace_1.rs:193:21
[INFO] [stderr]     |
[INFO] [stderr] 193 |                 let mut contents = fs::read_to_string(read_guard.as_path()).unwrap();
[INFO] [stderr]     |                     ----^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/execution_multi_trace_1.rs:244:17
[INFO] [stderr]     |
[INFO] [stderr] 244 |             let mut regs: user_regs_struct = ptrace::getregs(pid).unwrap();
[INFO] [stderr]     |                 ----^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/execution_multi_trace_1.rs:544:17
[INFO] [stderr]     |
[INFO] [stderr] 544 |             let mut child_regs: user_regs_struct = ptrace::getregs(pid).unwrap();
[INFO] [stderr]     |                 ----^^^^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/execution_multi_trace_1.rs:550:17
[INFO] [stderr]     |
[INFO] [stderr] 550 |             let mut child_regs: user_regs_struct = ptrace::getregs(pid).unwrap();
[INFO] [stderr]     |                 ----^^^^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `cont`
[INFO] [stderr]   --> src/ptrace.rs:23:8
[INFO] [stderr]    |
[INFO] [stderr] 23 | pub fn cont(pid: Pid) -> Result<()> {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `set_tracesysgood`
[INFO] [stderr]   --> src/ptrace.rs:28:8
[INFO] [stderr]    |
[INFO] [stderr] 28 | pub fn set_tracesysgood(pid: Pid) -> Result<()>  {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `set_emulate_option_simple`
[INFO] [stderr]   --> src/ptrace.rs:58:8
[INFO] [stderr]    |
[INFO] [stderr] 58 | pub fn set_emulate_option_simple(pid: Pid) -> Result<()> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `pokeuser`
[INFO] [stderr]    --> src/ptrace.rs:118:8
[INFO] [stderr]     |
[INFO] [stderr] 118 | pub fn pokeuser(pid: Pid, addr: u64, data: u64) -> Result<()> {
[INFO] [stderr]     |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dir`
[INFO] [stderr]    --> src/execution_multi_trace_1.rs:421:4
[INFO] [stderr]     |
[INFO] [stderr] 421 | fn dir(path: &str) {
[INFO] [stderr]     |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `make_fifo`
[INFO] [stderr]    --> src/execution_multi_trace_1.rs:446:4
[INFO] [stderr]     |
[INFO] [stderr] 446 | fn make_fifo(file_path: &str, mode: Mode) -> Result<PathBuf> {
[INFO] [stderr]     |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/execution_multi_trace_1.rs:73:9
[INFO] [stderr]    |
[INFO] [stderr] 73 |         chdir("/root");
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/execution_multi_trace_1.rs:110:13
[INFO] [stderr]     |
[INFO] [stderr] 110 |             mount_dir(&(&*MOUNT_DIR.read().unwrap()).as_ref().unwrap(), "target");
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/execution_multi_trace_1.rs:140:5
[INFO] [stderr]     |
[INFO] [stderr] 140 |     prepare_bash();
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/execution_multi_trace_1.rs:152:5
[INFO] [stderr]     |
[INFO] [stderr] 152 |     ptrace::set_emulate_option(pid);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/execution_multi_trace_1.rs:178:13
[INFO] [stderr]     |
[INFO] [stderr] 178 |             handle_trap(pid, child_status);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/execution_multi_trace_1.rs:229:17
[INFO] [stderr]     |
[INFO] [stderr] 229 |                 ptrace::sysemu_single(pid);
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/execution_multi_trace_1.rs:231:17
[INFO] [stderr]     |
[INFO] [stderr] 231 |                 ptrace::sysemu(pid);
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/execution_multi_trace_1.rs:411:13
[INFO] [stderr]     |
[INFO] [stderr] 411 |             copy_dir(entry.as_os_str().to_str().unwrap(), Path::new(target).join(entry.file_name().unwrap()).as_os_str().to_str().unwrap());
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/execution_multi_trace_1.rs:436:5
[INFO] [stderr]     |
[INFO] [stderr] 436 | /     mount::<Path, Path, str, str>(
[INFO] [stderr] 437 | |         Some(source_path),
[INFO] [stderr] 438 | |         target_path.as_path(),
[INFO] [stderr] 439 | |         Some("ext4"),
[INFO] [stderr] 440 | |         MsFlags::MS_BIND | MsFlags::MS_REC,
[INFO] [stderr] 441 | |         None,
[INFO] [stderr] 442 | |     );
[INFO] [stderr]     | |______^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/execution_multi_trace_1.rs:471:21
[INFO] [stderr]     |
[INFO] [stderr] 471 |                     ptrace::detach(pid);
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dir`
[INFO] [stderr]    --> src/execution_trace_1.rs:295:4
[INFO] [stderr]     |
[INFO] [stderr] 295 | fn dir(path: &str) {
[INFO] [stderr]     |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/execution_trace_1.rs:65:9
[INFO] [stderr]    |
[INFO] [stderr] 65 |         chdir("/root");
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/execution_trace_1.rs:102:13
[INFO] [stderr]     |
[INFO] [stderr] 102 |             mount_dir(&(&*MOUNT_DIR.read().unwrap()).as_ref().unwrap(), "target");
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/execution_trace_1.rs:121:5
[INFO] [stderr]     |
[INFO] [stderr] 121 |     prepare_bash();
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/execution_trace_1.rs:132:5
[INFO] [stderr]     |
[INFO] [stderr] 132 |     ptrace::set_tracesysgood(pid);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/execution_trace_1.rs:285:13
[INFO] [stderr]     |
[INFO] [stderr] 285 |             copy_dir(entry.as_os_str().to_str().unwrap(), Path::new(target).join(entry.file_name().unwrap()).as_os_str().to_str().unwrap());
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/execution_trace_2.rs:180:21
[INFO] [stderr]     |
[INFO] [stderr] 180 |                 let mut contents = fs::read_to_string(read_guard.as_path()).unwrap();
[INFO] [stderr]     |                     ----^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/execution_trace_1.rs:310:5
[INFO] [stderr]     |
[INFO] [stderr] 310 | /     mount::<Path, Path, str, str>(
[INFO] [stderr] 311 | |         Some(source_path),
[INFO] [stderr] 312 | |         target_path.as_path(),
[INFO] [stderr] 313 | |         Some("ext4"),
[INFO] [stderr] 314 | |         MsFlags::MS_BIND | MsFlags::MS_REC,
[INFO] [stderr] 315 | |         None,
[INFO] [stderr] 316 | |     );
[INFO] [stderr]     | |______^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/ptrace.rs:80:5
[INFO] [stderr]    |
[INFO] [stderr] 80 |     ptrace::syscall(pid, None);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/execution_trace_2.rs:230:17
[INFO] [stderr]     |
[INFO] [stderr] 230 |             let mut regs: user_regs_struct = ptrace::getregs(pid).unwrap();
[INFO] [stderr]     |                 ----^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/ptrace.rs:84:5
[INFO] [stderr]    |
[INFO] [stderr] 84 |     ptrace::step(pid, None);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `traceme`
[INFO] [stderr]   --> src/ptrace.rs:13:8
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub fn traceme() -> Result<()> {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/ptrace.rs:101:5
[INFO] [stderr]     |
[INFO] [stderr] 101 | /     Errno::result(
[INFO] [stderr] 102 | |         unsafe { libc::ptrace(31 as libc::c_uint, libc::pid_t::from(pid), std::ptr::null_mut::<libc::c_uint>(), std::ptr::null_mut::<libc::c_uint>()) }
[INFO] [stderr] 103 | |         // unsafe { libc::ptrace(24 as libc::c_uint, libc::pid_t::from(pid) as i32, std::ptr::null_mut::<std::ffi::c_void>(), std::ptr::null_mut::<std::ffi::c_void>()) }
[INFO] [stderr] 104 | |     )
[INFO] [stderr] 105 | |         .map(drop);
[INFO] [stderr]     | |___________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `cont`
[INFO] [stderr]   --> src/ptrace.rs:23:8
[INFO] [stderr]    |
[INFO] [stderr] 23 | pub fn cont(pid: Pid) -> Result<()> {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/ptrace.rs:110:5
[INFO] [stderr]     |
[INFO] [stderr] 110 | /     Errno::result(
[INFO] [stderr] 111 | |         unsafe { libc::ptrace(32 as libc::c_uint, libc::pid_t::from(pid), std::ptr::null_mut::<libc::c_uint>(), std::ptr::null_mut::<libc::c_uint>()) }
[INFO] [stderr] 112 | |     )
[INFO] [stderr] 113 | |         .map(drop);
[INFO] [stderr]     | |___________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `set_emulate_option`
[INFO] [stderr]   --> src/ptrace.rs:43:8
[INFO] [stderr]    |
[INFO] [stderr] 43 | pub fn set_emulate_option(pid: Pid) -> Result<()> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/ptrace.rs:119:5
[INFO] [stderr]     |
[INFO] [stderr] 119 | /     Errno::result(
[INFO] [stderr] 120 | |         unsafe { libc::ptrace(6 as libc::c_uint, libc::pid_t::from(pid), addr as *mut libc::c_void, data as *mut libc::c_void) }
[INFO] [stderr] 121 | |     )
[INFO] [stderr] 122 | |         .map(drop);
[INFO] [stderr]     | |___________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 38 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `set_emulate_option_simple`
[INFO] [stderr]   --> src/ptrace.rs:58:8
[INFO] [stderr]    |
[INFO] [stderr] 58 | pub fn set_emulate_option_simple(pid: Pid) -> Result<()> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/execution_multi_trace_1.rs:489:17
[INFO] [stderr]     |
[INFO] [stderr] 489 |                 ptrace::setregs(pid, new_regs);
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `pokeuser`
[INFO] [stderr]    --> src/ptrace.rs:118:8
[INFO] [stderr]     |
[INFO] [stderr] 118 | pub fn pokeuser(pid: Pid, addr: u64, data: u64) -> Result<()> {
[INFO] [stderr]     |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/execution_multi_trace_1.rs:499:17
[INFO] [stderr]     |
[INFO] [stderr] 499 |                 ptrace::setregs(pid, new_regs);
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_event`
[INFO] [stderr]    --> src/ptrace.rs:126:8
[INFO] [stderr]     |
[INFO] [stderr] 126 | pub fn get_event(pid: Pid) -> Result<i64> {
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dir`
[INFO] [stderr]    --> src/execution_trace_2.rs:330:4
[INFO] [stderr]     |
[INFO] [stderr] 330 | fn dir(path: &str) {
[INFO] [stderr]     |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `make_fifo`
[INFO] [stderr]    --> src/execution_trace_2.rs:355:4
[INFO] [stderr]     |
[INFO] [stderr] 355 | fn make_fifo(file_path: &str, mode: Mode) -> Result<PathBuf> {
[INFO] [stderr]     |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/execution_trace_2.rs:72:9
[INFO] [stderr]    |
[INFO] [stderr] 72 |         chdir("/root");
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/execution_trace_2.rs:109:13
[INFO] [stderr]     |
[INFO] [stderr] 109 |             mount_dir(&(&*MOUNT_DIR.read().unwrap()).as_ref().unwrap(), "target");
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/execution_trace_2.rs:138:5
[INFO] [stderr]     |
[INFO] [stderr] 138 |     prepare_bash();
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/execution_trace_2.rs:149:5
[INFO] [stderr]     |
[INFO] [stderr] 149 |     ptrace::set_tracesysgood(pid);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/execution_trace_2.rs:216:17
[INFO] [stderr]     |
[INFO] [stderr] 216 |                 ptrace::sysemu_single(pid);
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/execution_multi_trace_1.rs:507:17
[INFO] [stderr]     |
[INFO] [stderr] 507 |                 ptrace::setregs(pid, new_regs);
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/execution_multi_trace_1.rs:552:13
[INFO] [stderr]     |
[INFO] [stderr] 552 |             ptrace::setregs(pid, child_regs);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/ptrace.rs:80:5
[INFO] [stderr]    |
[INFO] [stderr] 80 |     ptrace::syscall(pid, None);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/ptrace.rs:84:5
[INFO] [stderr]    |
[INFO] [stderr] 84 |     ptrace::step(pid, None);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/ptrace.rs:101:5
[INFO] [stderr]     |
[INFO] [stderr] 101 | /     Errno::result(
[INFO] [stderr] 102 | |         unsafe { libc::ptrace(31 as libc::c_uint, libc::pid_t::from(pid), std::ptr::null_mut::<libc::c_uint>(), std::ptr::null_mut::<libc::c_uint>()) }
[INFO] [stderr] 103 | |         // unsafe { libc::ptrace(24 as libc::c_uint, libc::pid_t::from(pid) as i32, std::ptr::null_mut::<std::ffi::c_void>(), std::ptr::null_mut::<std::ffi::c_void>()) }
[INFO] [stderr] 104 | |     )
[INFO] [stderr] 105 | |         .map(drop);
[INFO] [stderr]     | |___________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/ptrace.rs:110:5
[INFO] [stderr]     |
[INFO] [stderr] 110 | /     Errno::result(
[INFO] [stderr] 111 | |         unsafe { libc::ptrace(32 as libc::c_uint, libc::pid_t::from(pid), std::ptr::null_mut::<libc::c_uint>(), std::ptr::null_mut::<libc::c_uint>()) }
[INFO] [stderr] 112 | |     )
[INFO] [stderr] 113 | |         .map(drop);
[INFO] [stderr]     | |___________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/ptrace.rs:119:5
[INFO] [stderr]     |
[INFO] [stderr] 119 | /     Errno::result(
[INFO] [stderr] 120 | |         unsafe { libc::ptrace(6 as libc::c_uint, libc::pid_t::from(pid), addr as *mut libc::c_void, data as *mut libc::c_void) }
[INFO] [stderr] 121 | |     )
[INFO] [stderr] 122 | |         .map(drop);
[INFO] [stderr]     | |___________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 49 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/execution_trace_2.rs:218:17
[INFO] [stderr]     |
[INFO] [stderr] 218 |                 ptrace::sysemu(pid);
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/execution_trace_2.rs:320:13
[INFO] [stderr]     |
[INFO] [stderr] 320 |             copy_dir(entry.as_os_str().to_str().unwrap(), Path::new(target).join(entry.file_name().unwrap()).as_os_str().to_str().unwrap());
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/execution_trace_2.rs:345:5
[INFO] [stderr]     |
[INFO] [stderr] 345 | /     mount::<Path, Path, str, str>(
[INFO] [stderr] 346 | |         Some(source_path),
[INFO] [stderr] 347 | |         target_path.as_path(),
[INFO] [stderr] 348 | |         Some("ext4"),
[INFO] [stderr] 349 | |         MsFlags::MS_BIND | MsFlags::MS_REC,
[INFO] [stderr] 350 | |         None,
[INFO] [stderr] 351 | |     );
[INFO] [stderr]     | |______^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/execution_trace_2.rs:377:21
[INFO] [stderr]     |
[INFO] [stderr] 377 |                     ptrace::detach(pid);
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] running 0 tests
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/execution_trace_2.rs:413:17
[INFO] [stderr]     |
[INFO] [stderr] 413 |                 ptrace::setregs(pid, new_regs);
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/execution_trace_2.rs:421:17
[INFO] [stderr]     |
[INFO] [stderr] 421 |                 ptrace::setregs(pid, new_regs);
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/ptrace.rs:80:5
[INFO] [stderr]    |
[INFO] [stderr] 80 |     ptrace::syscall(pid, None);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/ptrace.rs:84:5
[INFO] [stderr]    |
[INFO] [stderr] 84 |     ptrace::step(pid, None);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/ptrace.rs:101:5
[INFO] [stderr]     |
[INFO] [stderr] 101 | /     Errno::result(
[INFO] [stderr] 102 | |         unsafe { libc::ptrace(31 as libc::c_uint, libc::pid_t::from(pid), std::ptr::null_mut::<libc::c_uint>(), std::ptr::null_mut::<libc::c_uint>()) }
[INFO] [stderr] 103 | |         // unsafe { libc::ptrace(24 as libc::c_uint, libc::pid_t::from(pid) as i32, std::ptr::null_mut::<std::ffi::c_void>(), std::ptr::null_mut::<std::ffi::c_void>()) }
[INFO] [stderr] 104 | |     )
[INFO] [stderr] 105 | |         .map(drop);
[INFO] [stderr]     | |___________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/ptrace.rs:110:5
[INFO] [stderr]     |
[INFO] [stderr] 110 | /     Errno::result(
[INFO] [stderr] 111 | |         unsafe { libc::ptrace(32 as libc::c_uint, libc::pid_t::from(pid), std::ptr::null_mut::<libc::c_uint>(), std::ptr::null_mut::<libc::c_uint>()) }
[INFO] [stderr] 112 | |     )
[INFO] [stderr] 113 | |         .map(drop);
[INFO] [stderr]     | |___________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/ptrace.rs:119:5
[INFO] [stderr]     |
[INFO] [stderr] 119 | /     Errno::result(
[INFO] [stderr] 120 | |         unsafe { libc::ptrace(6 as libc::c_uint, libc::pid_t::from(pid), addr as *mut libc::c_void, data as *mut libc::c_void) }
[INFO] [stderr] 121 | |     )
[INFO] [stderr] 122 | |         .map(drop);
[INFO] [stderr]     | |___________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 43 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.18s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/container_1-3e298947587f0e42
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/container_pivot-2a9af017358a872c
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/executor_1-8701d52a2530886e
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/main-f2251cdd990899b6
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/multi_trace_1-85ba563d34410492
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/trace_1-b3fd6efb13f882c2
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/trace_2-286f8cab4475484e
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "880319c530c678a2dd42f18f96e821909e64dc61ac2016d8007580df23a017db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "880319c530c678a2dd42f18f96e821909e64dc61ac2016d8007580df23a017db", kill_on_drop: false }`
[INFO] [stdout] 880319c530c678a2dd42f18f96e821909e64dc61ac2016d8007580df23a017db