[INFO] cloning repository https://github.com/yangrudan/signal
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yangrudan/signal" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyangrudan%2Fsignal", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyangrudan%2Fsignal'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8f8d7d1c23185a7d7a217fd5fb4d74b97e76ec23
[INFO] checking yangrudan/signal against try#d83b14207998f47b18a34e930157ac0d7c18b16e for pr-149137
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyangrudan%2Fsignal" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/yangrudan/signal
[INFO] finished tweaking git repo https://github.com/yangrudan/signal
[INFO] tweaked toml for git repo https://github.com/yangrudan/signal written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/yangrudan/signal on toolchain d83b14207998f47b18a34e930157ac0d7c18b16e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d83b14207998f47b18a34e930157ac0d7c18b16e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/yangrudan/signal already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d83b14207998f47b18a34e930157ac0d7c18b16e" "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 dtor v0.0.6
[INFO] [stderr]   Downloaded ctor-proc-macro v0.0.6
[INFO] [stderr]   Downloaded dtor-proc-macro v0.0.5
[INFO] [stderr]   Downloaded ctor v0.4.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+d83b14207998f47b18a34e930157ac0d7c18b16e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 476a42eee30345f570f35e34b29f4251d8716226baa1bddcf5473113b4a47fbb
[INFO] running `Command { std: "docker" "start" "-a" "476a42eee30345f570f35e34b29f4251d8716226baa1bddcf5473113b4a47fbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "476a42eee30345f570f35e34b29f4251d8716226baa1bddcf5473113b4a47fbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "476a42eee30345f570f35e34b29f4251d8716226baa1bddcf5473113b4a47fbb", kill_on_drop: false }`
[INFO] [stdout] 476a42eee30345f570f35e34b29f4251d8716226baa1bddcf5473113b4a47fbb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "RUSTDOCFLAGS=--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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+d83b14207998f47b18a34e930157ac0d7c18b16e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 00b11a55364abda812dad10c45a332edc649e00b2da5faaa7a9d91159f582159
[INFO] running `Command { std: "docker" "start" "-a" "00b11a55364abda812dad10c45a332edc649e00b2da5faaa7a9d91159f582159", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.174
[INFO] [stderr]    Compiling object v0.36.7
[INFO] [stderr]     Checking cfg-if v1.0.1
[INFO] [stderr]    Compiling dtor-proc-macro v0.0.5
[INFO] [stderr]    Compiling nix v0.30.1
[INFO] [stderr]     Checking memchr v2.7.5
[INFO] [stderr]    Compiling signal-hook v0.3.18
[INFO] [stderr]     Checking miniz_oxide v0.8.9
[INFO] [stderr]     Checking bitflags v2.9.1
[INFO] [stderr]    Compiling ctor-proc-macro v0.0.6
[INFO] [stderr]     Checking dtor v0.0.6
[INFO] [stderr]     Checking ctor v0.4.3
[INFO] [stderr]     Checking signal-hook-registry v1.4.6
[INFO] [stderr]     Checking backtrace v0.3.75
[INFO] [stderr]     Checking signal_hook v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Error`
[INFO] [stdout]  --> src/main.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{Error, Write};
[INFO] [stdout]   |               ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Error`
[INFO] [stdout]  --> src/main.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{Error, Write};
[INFO] [stdout]   |               ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `registrations`
[INFO] [stdout]   --> src/main.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |     let registrations: Vec<_> = signals
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_registrations`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ret`
[INFO] [stdout]   --> src/main.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |     let ret = unsafe { libc::syscall(libc::SYS_tgkill, pid, tid, libc::SIGUSR2) };
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_ret`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `registrations`
[INFO] [stdout]   --> src/main.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |     let registrations: Vec<_> = signals
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_registrations`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ret`
[INFO] [stdout]   --> src/main.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |     let ret = unsafe { libc::syscall(libc::SYS_tgkill, pid, tid, libc::SIGUSR2) };
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_ret`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.69s
[INFO] running `Command { std: "docker" "inspect" "00b11a55364abda812dad10c45a332edc649e00b2da5faaa7a9d91159f582159", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00b11a55364abda812dad10c45a332edc649e00b2da5faaa7a9d91159f582159", kill_on_drop: false }`
[INFO] [stdout] 00b11a55364abda812dad10c45a332edc649e00b2da5faaa7a9d91159f582159