[INFO] cloning repository https://github.com/mokua/crust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mokua/crust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmokua%2Fcrust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmokua%2Fcrust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a4d06650c2d4a53ea14f8679fbb700e98cce9454
[INFO] testing mokua/crust against 1.54.0 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmokua%2Fcrust" "/workspace/builds/worker-19/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-19/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mokua/crust on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-19/source/.cargo/config
[INFO] started tweaking git repo https://github.com/mokua/crust
[INFO] finished tweaking git repo https://github.com/mokua/crust
[INFO] tweaked toml for git repo https://github.com/mokua/crust written to /workspace/builds/worker-19/source/Cargo.toml
[INFO] crate git repo https://github.com/mokua/crust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded errno v0.2.7
[INFO] [stderr]   Downloaded caps v0.5.0
[INFO] [stderr]   Downloaded seccomp-sys v0.1.3
[INFO] [stderr]   Downloaded nix v0.19.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 25bbb2a4440105fd121ef1427023a2658941fc3830549f0e8fc655038600dade
[INFO] running `Command { std: "docker" "start" "-a" "25bbb2a4440105fd121ef1427023a2658941fc3830549f0e8fc655038600dade", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "25bbb2a4440105fd121ef1427023a2658941fc3830549f0e8fc655038600dade", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25bbb2a4440105fd121ef1427023a2658941fc3830549f0e8fc655038600dade", kill_on_drop: false }`
[INFO] [stdout] 25bbb2a4440105fd121ef1427023a2658941fc3830549f0e8fc655038600dade
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f1ba0bf65e017c75b7c05a6a6587565409f30410796e7afb056c9718118f654c
[INFO] running `Command { std: "docker" "start" "-a" "f1ba0bf65e017c75b7c05a6a6587565409f30410796e7afb056c9718118f654c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling syn v1.0.58
[INFO] [stderr]    Compiling serde_derive v1.0.120
[INFO] [stderr]    Compiling serde v1.0.120
[INFO] [stderr]    Compiling regex-syntax v0.6.22
[INFO] [stderr]    Compiling seccomp-sys v0.1.3
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling yansi v0.5.0
[INFO] [stderr]    Compiling thread_local v1.1.3
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling errno v0.2.7
[INFO] [stderr]    Compiling nix v0.19.1
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling regex v1.4.3
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling thiserror-impl v1.0.23
[INFO] [stderr]    Compiling thiserror v1.0.23
[INFO] [stderr]    Compiling flexi_logger v0.17.1
[INFO] [stderr]    Compiling caps v0.5.0
[INFO] [stderr]    Compiling crust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/main.rs:286:5
[INFO] [stdout]     |
[INFO] [stdout] 286 |     ///* Execute a shell command */
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `caps::errors::CapsError`
[INFO] [stdout]  --> src/caps.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use caps::errors::CapsError;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `libc::prctl`
[INFO] [stdout]  --> src/caps.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use libc::prctl;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Error`
[INFO] [stdout]  --> src/caps.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::io::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]  --> src/dev.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::fs;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Error`
[INFO] [stdout]  --> src/mount.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | use nix::{Error, NixPath};
[INFO] [stdout]   |           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt`
[INFO] [stdout]  --> src/mount.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::fmt;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::BitAnd`
[INFO] [stdout]  --> src/mount.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::ops::BitAnd;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `LevelFilter`, `LogSpecification`, `Logger`
[INFO] [stdout]  --> src/mount.rs:9:20
[INFO] [stdout]   |
[INFO] [stdout] 9 | use flexi_logger::{LevelFilter, LogSpecification, Logger};
[INFO] [stdout]   |                    ^^^^^^^^^^^  ^^^^^^^^^^^^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `OFlag`, `open`, `openat`
[INFO] [stdout]   --> src/mount.rs:10:18
[INFO] [stdout]    |
[INFO] [stdout] 10 | use nix::fcntl::{open, openat, OFlag};
[INFO] [stdout]    |                  ^^^^  ^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/mount.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |       ///1. check if the root & mounts are set
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 20 | /     if spec.root.is_none() || spec.mounts.is_none() {
[INFO] [stdout] 21 | |         info!("no work todo, both root & mount is None ");
[INFO] [stdout] 22 | |         return;
[INFO] [stdout] 23 | |     }
[INFO] [stdout]    | |_____- rustdoc does not generate documentation for expressions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/mount.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | /     ///2. Ensure that 'new_root' and its parent mount don't have
[INFO] [stdout] 25 | |     /// shared propagation (which would cause pivot_root() to
[INFO] [stdout] 26 | |     /// return an error), and prevent propagation of mount
[INFO] [stdout] 27 | |     /// events to the initial mount namespace
[INFO] [stdout]    | |_____________________________________________^
[INFO] [stdout] 28 |       //if (mount(NULL, "/", NULL, MS_REC | MS_PRIVATE, NULL) == -1)
[INFO] [stdout] 29 |       let root = b"/".as_ref();
[INFO] [stdout]    |       ------------------------- rustdoc does not generate documentation for statements
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/mount.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 43 | /     /// 3. Ensure that 'rootfs' is a mount point
[INFO] [stdout] 44 | |     /// if (mount(new_root, new_root, NULL, MS_BIND, NULL) == -1)
[INFO] [stdout]    | |_________________________________________________________________^
[INFO] [stdout] 45 |       let x = spec.root.as_ref().unwrap();
[INFO] [stdout]    |       ------------------------------------ rustdoc does not generate documentation for statements
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/mount.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 60 |     ///4. Create directory to which old root will be pivoted; it must be under the new root
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 61 |     let rp = std::str::from_utf8(rootfs_path).unwrap();
[INFO] [stdout]    |     --------------------------------------------------- rustdoc does not generate documentation for statements
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/mount.rs:73:5
[INFO] [stdout]    |
[INFO] [stdout] 73 |     ///5.  And pivot the root filesystem
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 76 |     let result = nix::unistd::pivot_root(rootfs_path, put_old_path);
[INFO] [stdout]    |     ---------------------------------------------------------------- rustdoc does not generate documentation for statements
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/mount.rs:82:5
[INFO] [stdout]    |
[INFO] [stdout] 82 |     ///6.Switch the current working directory to "/"
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 83 |     //if (chdir("/") == -1)
[INFO] [stdout] 84 |     let result = chdir("/");
[INFO] [stdout]    |     ------------------------ rustdoc does not generate documentation for statements
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/mount.rs:90:5
[INFO] [stdout]    |
[INFO] [stdout] 90 |     ///7.Unmount old root and remove mount point
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 91 |     //umount2(put_old, MNT_DETACH)
[INFO] [stdout] 92 |     let put_old_dir = put_old_name.as_bytes();
[INFO] [stdout]    |     ------------------------------------------ rustdoc does not generate documentation for statements
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `main`
[INFO] [stdout]  --> src/resources.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::{main, ChildConfig};
[INFO] [stdout]   |             ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/resources.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Error`
[INFO] [stdout]  --> src/resources.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::io::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::Display`
[INFO] [stdout]  --> src/resources.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::path::Display;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `seccomp_sys::scmp_compare`
[INFO] [stdout]  --> src/spec.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use seccomp_sys::scmp_compare;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `seccomp_sys::scmp_compare::SCMP_CMP_NE`
[INFO] [stdout]  --> src/spec.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use seccomp_sys::scmp_compare::SCMP_CMP_NE;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `nix::sys::socket::SockFlag`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use nix::sys::socket::SockFlag;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AddressFamily`, `SockType`, `socketpair`
[INFO] [stdout]   --> src/main.rs:13:24
[INFO] [stdout]    |
[INFO] [stdout] 13 | use nix::sys::socket::{socketpair, AddressFamily, SockType};
[INFO] [stdout]    |                        ^^^^^^^^^^  ^^^^^^^^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ForkResult`, `execvp`, `fork`, `gethostname`
[INFO] [stdout]   --> src/main.rs:15:27
[INFO] [stdout]    |
[INFO] [stdout] 15 | use nix::unistd::{execve, execvp, fork, gethostname, pipe, sethostname, ForkResult, Pid, Uid};
[INFO] [stdout]    |                           ^^^^^^  ^^^^  ^^^^^^^^^^^                     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::min`
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::cmp::min;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Command`, `ExitStatus`, `Stdio`
[INFO] [stdout]   --> src/main.rs:18:26
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::process::{exit, Command, ExitStatus, Stdio};
[INFO] [stdout]    |                          ^^^^^^^  ^^^^^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `io`, `process`, `time`
[INFO] [stdout]   --> src/main.rs:19:15
[INFO] [stdout]    |
[INFO] [stdout] 19 | use std::{fs, io, process, thread, time};
[INFO] [stdout]    |               ^^  ^^^^^^^          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Arch`, `LinuxSeccompArg`, `Process`
[INFO] [stdout]   --> src/main.rs:22:19
[INFO] [stdout]    |
[INFO] [stdout] 22 | use crate::spec::{Arch, LinuxSeccomp, LinuxSeccompAction, LinuxSeccompArg, Process, Spec};
[INFO] [stdout]    |                   ^^^^                                    ^^^^^^^^^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `nix::errno::Errno::EPERM`
[INFO] [stdout]   --> src/main.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | use nix::errno::Errno::EPERM;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Error`, `sched`
[INFO] [stdout]   --> src/main.rs:25:11
[INFO] [stdout]    |
[INFO] [stdout] 25 | use nix::{sched, Error};
[INFO] [stdout]    |           ^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `seccomp_sys::scmp_arch::SCMP_ARCH_NATIVE`
[INFO] [stdout]   --> src/main.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | use seccomp_sys::scmp_arch::SCMP_ARCH_NATIVE;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `scmp_compare`
[INFO] [stdout]   --> src/main.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     scmp_compare, seccomp_arch_add, seccomp_attr_set, seccomp_init, seccomp_load, seccomp_release,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]   --> src/main.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | use std::fs::File;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::os::raw::c_int`
[INFO] [stdout]   --> src/main.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 | use std::os::raw::c_int;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::os::unix::io::IntoRawFd`
[INFO] [stdout]   --> src/main.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | use std::os::unix::io::IntoRawFd;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]   --> src/main.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | use std::path::Path;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread::sleep`
[INFO] [stdout]   --> src/main.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 | use std::thread::sleep;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/main.rs:399:13
[INFO] [stdout]     |
[INFO] [stdout] 399 | /             ///-EDOM  Architecture specific failure.
[INFO] [stdout] 400 | |             //
[INFO] [stdout] 401 | |             ///-EEXIST
[INFO] [stdout]     | |______________________^
[INFO] [stdout] ...
[INFO] [stdout] 412 | /             if result != 0 && result != -libc::EEXIST {
[INFO] [stdout] 413 | |                 info!("seccomp adding architecture failed!, result {} ", result);
[INFO] [stdout] 414 | |                 seccomp_release(ctx);
[INFO] [stdout] 415 | |                 return;
[INFO] [stdout] 416 | |             }
[INFO] [stdout]     | |_____________- rustdoc does not generate documentation for expressions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `NixPath`
[INFO] [stdout]  --> src/mount.rs:5:18
[INFO] [stdout]   |
[INFO] [stdout] 5 | use nix::{Error, NixPath};
[INFO] [stdout]   |                  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `architecture`
[INFO] [stdout]    --> src/main.rs:393:13
[INFO] [stdout]     |
[INFO] [stdout] 393 |         for architecture in architectures {
[INFO] [stdout]     |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_architecture`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `errno_ret`
[INFO] [stdout]    --> src/main.rs:421:17
[INFO] [stdout]     |
[INFO] [stdout] 421 |             let errno_ret = syscall.errno_ret.unwrap_or(libc::EPERM);
[INFO] [stdout]     |                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_errno_ret`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `options`
[INFO] [stdout]    --> src/mount.rs:133:27
[INFO] [stdout]     |
[INFO] [stdout] 133 |         let (mount_flags, options) = match &mount.mount_options {
[INFO] [stdout]     |                           ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_options`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `label_houw`
[INFO] [stdout]    --> src/mount.rs:220:17
[INFO] [stdout]     |
[INFO] [stdout] 220 |             let label_houw = match mount.mount_type.as_ref().unwrap().as_str() {
[INFO] [stdout]     |                 ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_label_houw`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `source`
[INFO] [stdout]    --> src/mount.rs:236:9
[INFO] [stdout]     |
[INFO] [stdout] 236 |     let source = mount.source.as_ref().unwrap().as_bytes();
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_source`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]    --> src/resources.rs:564:30
[INFO] [stdout]     |
[INFO] [stdout] 564 |     fn visit_pids(&mut self, s: &LinuxPids) -> String {
[INFO] [stdout]     |                              ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/resources.rs:568:32
[INFO] [stdout]     |
[INFO] [stdout] 568 |     fn visit_memory(&mut self, e: &LinuxMemory) -> String {
[INFO] [stdout]     |                                ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/resources.rs:572:30
[INFO] [stdout]     |
[INFO] [stdout] 572 |     fn visit_rdma(&mut self, e: &LinuxRdma) -> String {
[INFO] [stdout]     |                              ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/resources.rs:576:32
[INFO] [stdout]     |
[INFO] [stdout] 576 |     fn visit_cpuset(&mut self, e: &LinuxCPUSet) -> String {
[INFO] [stdout]     |                                ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/resources.rs:580:28
[INFO] [stdout]     |
[INFO] [stdout] 580 |     fn visit_io(&mut self, e: &LinuxBlockIO) -> String {
[INFO] [stdout]     |                            ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/resources.rs:584:34
[INFO] [stdout]     |
[INFO] [stdout] 584 |     fn visit_hugepage(&mut self, e: &LinuxHugepageLimits) -> String {
[INFO] [stdout]     |                                  ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cgroup_subsystems`
[INFO] [stdout]    --> src/resources.rs:615:13
[INFO] [stdout]     |
[INFO] [stdout] 615 |         let cgroup_subsystems = vec![
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_cgroup_subsystems`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `m`
[INFO] [stdout]    --> src/resources.rs:677:18
[INFO] [stdout]     |
[INFO] [stdout] 677 |             Some(m) => buffer.push_str("+memory"),
[INFO] [stdout]     |                  ^ help: if this is intentional, prefix it with an underscore: `_m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cpu`
[INFO] [stdout]    --> src/resources.rs:681:18
[INFO] [stdout]     |
[INFO] [stdout] 681 |             Some(cpu) => buffer.push_str(" +cpu"),
[INFO] [stdout]     |                  ^^^ help: if this is intentional, prefix it with an underscore: `_cpu`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cpuset`
[INFO] [stdout]    --> src/resources.rs:685:18
[INFO] [stdout]     |
[INFO] [stdout] 685 |             Some(cpuset) => buffer.push_str(" +cpuset"),
[INFO] [stdout]     |                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_cpuset`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pids`
[INFO] [stdout]    --> src/resources.rs:690:18
[INFO] [stdout]     |
[INFO] [stdout] 690 |             Some(pids) => buffer.push_str(" +pids"),
[INFO] [stdout]     |                  ^^^^ help: if this is intentional, prefix it with an underscore: `_pids`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hugetlb`
[INFO] [stdout]    --> src/resources.rs:695:18
[INFO] [stdout]     |
[INFO] [stdout] 695 |             Some(hugetlb) => buffer.push_str(" +hugetlb"),
[INFO] [stdout]     |                  ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_hugetlb`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rdma`
[INFO] [stdout]    --> src/resources.rs:700:18
[INFO] [stdout]     |
[INFO] [stdout] 700 |             Some(rdma) => buffer.push_str(" +rdma"),
[INFO] [stdout]     |                  ^^^^ help: if this is intentional, prefix it with an underscore: `_rdma`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buffer`
[INFO] [stdout]    --> src/spec.rs:187:13
[INFO] [stdout]     |
[INFO] [stdout] 187 |         let buffer = String::new();
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_buffer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `check_running_in_user_namespace`
[INFO] [stdout]    --> src/dev.rs:150:4
[INFO] [stdout]     |
[INFO] [stdout] 150 | fn check_running_in_user_namespace() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/resources.rs:526:12
[INFO] [stdout]     |
[INFO] [stdout] 526 |     pub fn new() -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `argc`
[INFO] [stdout]   --> src/main.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 |     argc: u8,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `uid`
[INFO] [stdout]   --> src/main.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 47 |     uid: Uid,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `fd`
[INFO] [stdout]   --> src/main.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 48 |     fd: u8,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `argv`
[INFO] [stdout]   --> src/main.rs:50:5
[INFO] [stdout]    |
[INFO] [stdout] 50 |     argv: Vec<&'static str>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `mount_dir`
[INFO] [stdout]   --> src/main.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 51 |     mount_dir: &'static str,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:295:5
[INFO] [stdout]     |
[INFO] [stdout] 295 |     execve(&CString::new("/bin/bash").unwrap().as_c_str(), args, env);
[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 `Result` that must be used
[INFO] [stdout]    --> src/main.rs:310:5
[INFO] [stdout]     |
[INFO] [stdout] 310 |     writeln!(&mut buffer, "0\t{}\t1", child_pid.as_raw());
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:324:5
[INFO] [stdout]     |
[INFO] [stdout] 324 |     writeln!(&mut buffer, "deny");
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:337:5
[INFO] [stdout]     |
[INFO] [stdout] 337 |     writeln!(&mut buffer, "0\t{}\t1", child_pid.as_raw());
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `put_old_name` should have an upper case name
[INFO] [stdout]   --> src/mount.rs:13:7
[INFO] [stdout]    |
[INFO] [stdout] 13 | const put_old_name: &str = "oldrootfs";
[INFO] [stdout]    |       ^^^^^^^^^^^^ help: convert the identifier to upper case: `PUT_OLD_NAME`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `cpuSet` should have a snake case name
[INFO] [stdout]   --> src/resources.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     cpuSet: Option<LinuxCPUSet>,
[INFO] [stdout]    |     ^^^^^^ help: convert the identifier to snake case: `cpu_set`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `blockIO` should have a snake case name
[INFO] [stdout]   --> src/resources.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     blockIO: Option<LinuxBlockIO>,
[INFO] [stdout]    |     ^^^^^^^ help: convert the identifier to snake case: `block_io`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `hugepageLimits` should have a snake case name
[INFO] [stdout]   --> src/resources.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     hugepageLimits: Option<LinuxHugepageLimits>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^ help: convert the identifier to snake case: `hugepage_limits`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `hugepageLimits` should have a snake case name
[INFO] [stdout]   --> src/resources.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 |     hugepageLimits: Option<Vec<LinuxHugepageLimit>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^ help: convert the identifier to snake case: `hugepage_limits`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/resources.rs:330:9
[INFO] [stdout]     |
[INFO] [stdout] 330 | /         fs::write(
[INFO] [stdout] 331 | |             format!("{}/pids.max", self.child_directory),
[INFO] [stdout] 332 | |             s.pids_max.to_string(),
[INFO] [stdout] 333 | |         );
[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 `Result` that must be used
[INFO] [stdout]    --> src/resources.rs:393:17
[INFO] [stdout]     |
[INFO] [stdout] 393 |                 writeln!(&mut buffer, "{}", rdma_entry.to_string());
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/resources.rs:424:9
[INFO] [stdout]     |
[INFO] [stdout] 424 | /         match e.default_weight {
[INFO] [stdout] 425 | |             None => writeln!(&mut buffer, "{}", "default 100"),
[INFO] [stdout] 426 | |             Some(def) => writeln!(&mut buffer, "default {}", def),
[INFO] [stdout] 427 | |         };
[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 `Result` that must be used
[INFO] [stdout]    --> src/resources.rs:429:13
[INFO] [stdout]     |
[INFO] [stdout] 429 | /             writeln!(
[INFO] [stdout] 430 | |                 &mut buffer,
[INFO] [stdout] 431 | |                 "{}:{}\t{}",
[INFO] [stdout] 432 | |                 weight.device.major, weight.device.minor, weight.weight
[INFO] [stdout] 433 | |             );
[INFO] [stdout]     | |______________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/resources.rs:435:9
[INFO] [stdout]     |
[INFO] [stdout] 435 |         fs::write(format!("{}/io.weight", self.child_directory), buffer);
[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 `Result` that must be used
[INFO] [stdout]    --> src/resources.rs:441:13
[INFO] [stdout]     |
[INFO] [stdout] 441 | /             write!(
[INFO] [stdout] 442 | |                 &mut buffer,
[INFO] [stdout] 443 | |                 "{}:{}\t",
[INFO] [stdout] 444 | |                 io_limit.device.major, io_limit.device.minor,
[INFO] [stdout] 445 | |             );
[INFO] [stdout]     | |______________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/resources.rs:449:21
[INFO] [stdout]     |
[INFO] [stdout] 449 |                     write!(&mut buffer, "rbps={}\t", rbps);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/resources.rs:455:21
[INFO] [stdout]     |
[INFO] [stdout] 455 |                     write!(&mut buffer, "wbps={}\t", wbps);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/resources.rs:462:21
[INFO] [stdout]     |
[INFO] [stdout] 462 |                     write!(&mut buffer, "riops={}\t", riops);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/resources.rs:469:21
[INFO] [stdout]     |
[INFO] [stdout] 469 |                     write!(&mut buffer, "wiops={}\t", wiops);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/resources.rs:473:13
[INFO] [stdout]     |
[INFO] [stdout] 473 |             writeln!(&mut buffer);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `$crate::write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/resources.rs:475:9
[INFO] [stdout]     |
[INFO] [stdout] 475 |         fs::write(format!("{}/io.max", self.child_directory), buffer);
[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 `Result` that must be used
[INFO] [stdout]    --> src/resources.rs:487:13
[INFO] [stdout]     |
[INFO] [stdout] 487 | /             match hugetlb.max {
[INFO] [stdout] 488 | |                 None => fs::write(
[INFO] [stdout] 489 | |                     format!(
[INFO] [stdout] 490 | |                         "{}/hugetlb.{}.max",
[INFO] [stdout] ...   |
[INFO] [stdout] 501 | |                 ),
[INFO] [stdout] 502 | |             };
[INFO] [stdout]     | |______________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: linking with `cc` failed: exit status: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-m64" "/opt/rustwide/target/debug/deps/crust-c4f82b44f1f2bfea.crust.76fbak8u-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/crust-c4f82b44f1f2bfea.crust.76fbak8u-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/crust-c4f82b44f1f2bfea.crust.76fbak8u-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/crust-c4f82b44f1f2bfea.crust.76fbak8u-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/crust-c4f82b44f1f2bfea.crust.76fbak8u-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/crust-c4f82b44f1f2bfea.crust.76fbak8u-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/crust-c4f82b44f1f2bfea.crust.76fbak8u-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/crust-c4f82b44f1f2bfea.crust.76fbak8u-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/crust-c4f82b44f1f2bfea.crust.76fbak8u-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/crust-c4f82b44f1f2bfea.crust.76fbak8u-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/crust-c4f82b44f1f2bfea.crust.76fbak8u-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/crust-c4f82b44f1f2bfea.crust.76fbak8u-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/crust-c4f82b44f1f2bfea.crust.76fbak8u-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/crust-c4f82b44f1f2bfea.crust.76fbak8u-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/crust-c4f82b44f1f2bfea.crust.76fbak8u-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/crust-c4f82b44f1f2bfea.crust.76fbak8u-cgu.9.rcgu.o" "/opt/rustwide/target/debug/deps/crust-c4f82b44f1f2bfea.43dz1icqjqwrzye2.rcgu.o" "-Wl,--as-needed" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libserde_json-7c0826e1634dd64a.rlib" "/opt/rustwide/target/debug/deps/libryu-059aa1fbb24cd15e.rlib" "/opt/rustwide/target/debug/deps/libitoa-e8b11f69ec08d8ae.rlib" "/opt/rustwide/target/debug/deps/libclap-c2b1672abcb5bb46.rlib" "/opt/rustwide/target/debug/deps/libvec_map-07385fbe5fb99a77.rlib" "/opt/rustwide/target/debug/deps/libtextwrap-3bb22fb43a400e8d.rlib" "/opt/rustwide/target/debug/deps/libunicode_width-5cf7ed896e8bb5a9.rlib" "/opt/rustwide/target/debug/deps/libstrsim-b10957d572414a9c.rlib" "/opt/rustwide/target/debug/deps/libansi_term-e2a35aae900e64a8.rlib" "/opt/rustwide/target/debug/deps/libseccomp_sys-447a41fc7316b690.rlib" "/opt/rustwide/target/debug/deps/libserde-d8e0f97570c4ef1e.rlib" "/opt/rustwide/target/debug/deps/libcaps-cb2ab60150c36849.rlib" "/opt/rustwide/target/debug/deps/liberrno-95ff934c098b8f05.rlib" "/opt/rustwide/target/debug/deps/libflexi_logger-0c02e696d8c7e324.rlib" "/opt/rustwide/target/debug/deps/libglob-b2b3e3431c476f53.rlib" "/opt/rustwide/target/debug/deps/libatty-ceacbf36f8c7e37d.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-5c53d641eb010a81.rlib" "/opt/rustwide/target/debug/deps/libyansi-97afae47fed1e905.rlib" "/opt/rustwide/target/debug/deps/libregex-9ccea0e709b913e3.rlib" "/opt/rustwide/target/debug/deps/libthread_local-a55bde81be65d265.rlib" "/opt/rustwide/target/debug/deps/libonce_cell-d6a3021f3714f6c5.rlib" "/opt/rustwide/target/debug/deps/libregex_syntax-ba29fc71cc7d64f6.rlib" "/opt/rustwide/target/debug/deps/libaho_corasick-5234701034b12ee4.rlib" "/opt/rustwide/target/debug/deps/libmemchr-9559fd627c3017a7.rlib" "/opt/rustwide/target/debug/deps/libthiserror-8e836e2de4339678.rlib" "/opt/rustwide/target/debug/deps/libchrono-20b0daf02f11bd9c.rlib" "/opt/rustwide/target/debug/deps/libnum_integer-016eaeb10a6f0eb9.rlib" "/opt/rustwide/target/debug/deps/libnum_traits-3ea67f5534c2ade7.rlib" "/opt/rustwide/target/debug/deps/libtime-287dedbdd82df204.rlib" "/opt/rustwide/target/debug/deps/liblog-c7a6438e9780af3a.rlib" "/opt/rustwide/target/debug/deps/libnix-e93804a65a8c7491.rlib" "/opt/rustwide/target/debug/deps/libbitflags-f89ae4b715176e2d.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-38c8a3e888ecb06a.rlib" "/opt/rustwide/target/debug/deps/liblibc-42115d762332cdaf.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-2420485b9e5ef5e1.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-785e3cb61c4b1960.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-087191a88bdaa22d.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-9981842c02975178.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-6fb405869b015fde.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-d05c5c3c56004b7b.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-42d74d2097528b38.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd_detect-fb36534c113d2209.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-b56b9042c12b6535.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-491902d6cb3e76df.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-61834e0981b8c367.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-f78aa99d613a55bc.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-53ee54cd7fed2c57.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-544ecdbd6cda3c58.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-379cc252b6943a79.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-8063eea38dcc5e62.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-5b228734afae15ee.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-d6c7a399d95d173f.rlib" "-Wl,-Bdynamic" "-lseccomp" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc" "-Wl,--eh-frame-hdr" "-Wl,-znoexecstack" "-L" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "/opt/rustwide/target/debug/deps/crust-c4f82b44f1f2bfea" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs"
[INFO] [stdout]   = note: /usr/bin/ld: cannot find -lseccomp
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 89 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `crust`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "f1ba0bf65e017c75b7c05a6a6587565409f30410796e7afb056c9718118f654c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1ba0bf65e017c75b7c05a6a6587565409f30410796e7afb056c9718118f654c", kill_on_drop: false }`
[INFO] [stdout] f1ba0bf65e017c75b7c05a6a6587565409f30410796e7afb056c9718118f654c
