[INFO] cloning repository https://github.com/simotin13/binary_tracer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/simotin13/binary_tracer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsimotin13%2Fbinary_tracer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsimotin13%2Fbinary_tracer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3d42472235fb092f3ae699fa4babe9fa19d6c72f
[INFO] checking simotin13/binary_tracer against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsimotin13%2Fbinary_tracer" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/simotin13/binary_tracer on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/simotin13/binary_tracer
[INFO] finished tweaking git repo https://github.com/simotin13/binary_tracer
[INFO] tweaked toml for git repo https://github.com/simotin13/binary_tracer written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/simotin13/binary_tracer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] be87d4d8910745ba876b7eded7b2b28a47ada64ffaf11b75b6dd691236152864
[INFO] running `Command { std: "docker" "start" "-a" "be87d4d8910745ba876b7eded7b2b28a47ada64ffaf11b75b6dd691236152864", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "be87d4d8910745ba876b7eded7b2b28a47ada64ffaf11b75b6dd691236152864", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be87d4d8910745ba876b7eded7b2b28a47ada64ffaf11b75b6dd691236152864", kill_on_drop: false }`
[INFO] [stdout] be87d4d8910745ba876b7eded7b2b28a47ada64ffaf11b75b6dd691236152864
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=forbid" "-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" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0a16a5374bda6e6d0d83076723ab443cb2ed99df860d8a6f612723f4597c7cb6
[INFO] running `Command { std: "docker" "start" "-a" "0a16a5374bda6e6d0d83076723ab443cb2ed99df860d8a6f612723f4597c7cb6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]     Checking mio v0.7.11
[INFO] [stderr]     Checking binary_tracer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::process::Command`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::process::Command;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process::Stdio`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::process::Stdio;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Write`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::io::Write;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Events`, `Poll`, `Token`
[INFO] [stdout]  --> src/gdbmi.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | use mio::{Events, Poll, Token};
[INFO] [stdout]   |           ^^^^^^  ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process::Command`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::process::Command;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process::Stdio`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::process::Stdio;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Write`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::io::Write;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Events`, `Poll`, `Token`
[INFO] [stdout]  --> src/gdbmi.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | use mio::{Events, Poll, Token};
[INFO] [stdout]   |           ^^^^^^  ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/elf.rs:227:13
[INFO] [stdout]     |
[INFO] [stdout] 227 |             ELFOSABI_SYSV => println!("  OS/ABI:{:28}Alias.", ""),
[INFO] [stdout]     |             ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/elf.rs:231:13
[INFO] [stdout]     |
[INFO] [stdout] 231 |             ELFOSABI_LINUX => println!("  OS/ABI:{:28}Compatibility alias.", ""),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/elf.rs:357:13
[INFO] [stdout]     |
[INFO] [stdout] 357 |             ELFOSABI_SYSV => println!("  OS/ABI:{:28}Alias.", ""),
[INFO] [stdout]     |             ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/elf.rs:361:13
[INFO] [stdout]     |
[INFO] [stdout] 361 |             ELFOSABI_LINUX => println!("  OS/ABI:{:28}Compatibility alias.", ""),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf_dword`
[INFO] [stdout]    --> src/elf.rs:146:17
[INFO] [stdout]     |
[INFO] [stdout] 146 |         let mut buf_dword: [u8; 8] = Default::default();
[INFO] [stdout]     |                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_buf_dword`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/elf.rs:146:13
[INFO] [stdout]     |
[INFO] [stdout] 146 |         let mut buf_dword: [u8; 8] = Default::default();
[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: unreachable pattern
[INFO] [stdout]    --> src/elf.rs:227:13
[INFO] [stdout]     |
[INFO] [stdout] 227 |             ELFOSABI_SYSV => println!("  OS/ABI:{:28}Alias.", ""),
[INFO] [stdout]     |             ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/elf.rs:231:13
[INFO] [stdout]     |
[INFO] [stdout] 231 |             ELFOSABI_LINUX => println!("  OS/ABI:{:28}Compatibility alias.", ""),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/elf.rs:357:13
[INFO] [stdout]     |
[INFO] [stdout] 357 |             ELFOSABI_SYSV => println!("  OS/ABI:{:28}Alias.", ""),
[INFO] [stdout]     |             ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/elf.rs:361:13
[INFO] [stdout]     |
[INFO] [stdout] 361 |             ELFOSABI_LINUX => println!("  OS/ABI:{:28}Compatibility alias.", ""),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf_dword`
[INFO] [stdout]    --> src/elf.rs:146:17
[INFO] [stdout]     |
[INFO] [stdout] 146 |         let mut buf_dword: [u8; 8] = Default::default();
[INFO] [stdout]     |                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_buf_dword`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/elf.rs:146:13
[INFO] [stdout]     |
[INFO] [stdout] 146 |         let mut buf_dword: [u8; 8] = Default::default();
[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/gdbmi.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |         let mut proc = Command::new("gdb").
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Elf32Sword`
[INFO] [stdout]  --> src/elf.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | type Elf32Sword    = i32;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Elf64Sword`
[INFO] [stdout]   --> src/elf.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | type Elf64Sword    = i32;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `SIZE_ELF32_SWORD`
[INFO] [stdout]   --> src/elf.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | const SIZE_ELF32_SWORD: usize   = mem::size_of::<Elf32Sword>();
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `SIZE_ELF64_SWORD`
[INFO] [stdout]   --> src/elf.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | const SIZE_ELF64_SWORD: usize   = mem::size_of::<Elf64Sword>();
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `ET_NUM`
[INFO] [stdout]   --> src/elf.rs:65:1
[INFO] [stdout]    |
[INFO] [stdout] 65 | const ET_NUM:u16    = 5;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `timeout`
[INFO] [stdout]  --> src/gdbmi.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     timeout: u32,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/gdbmi.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |         let mut proc = Command::new("gdb").
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Elf32Sword`
[INFO] [stdout]  --> src/elf.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | type Elf32Sword    = i32;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Elf64Sword`
[INFO] [stdout]   --> src/elf.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | type Elf64Sword    = i32;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `SIZE_ELF32_SWORD`
[INFO] [stdout]   --> src/elf.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | const SIZE_ELF32_SWORD: usize   = mem::size_of::<Elf32Sword>();
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `SIZE_ELF64_SWORD`
[INFO] [stdout]   --> src/elf.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | const SIZE_ELF64_SWORD: usize   = mem::size_of::<Elf64Sword>();
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `ET_NUM`
[INFO] [stdout]   --> src/elf.rs:65:1
[INFO] [stdout]    |
[INFO] [stdout] 65 | const ET_NUM:u16    = 5;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `timeout`
[INFO] [stdout]  --> src/gdbmi.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     timeout: u32,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.81s
[INFO] running `Command { std: "docker" "inspect" "0a16a5374bda6e6d0d83076723ab443cb2ed99df860d8a6f612723f4597c7cb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a16a5374bda6e6d0d83076723ab443cb2ed99df860d8a6f612723f4597c7cb6", kill_on_drop: false }`
[INFO] [stdout] 0a16a5374bda6e6d0d83076723ab443cb2ed99df860d8a6f612723f4597c7cb6