[INFO] cloning repository https://github.com/tetsuzawa/strace-from-scratch-in-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tetsuzawa/strace-from-scratch-in-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftetsuzawa%2Fstrace-from-scratch-in-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftetsuzawa%2Fstrace-from-scratch-in-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b60dbd65f1eba5c372f379ee1031a3634be4be83
[INFO] building tetsuzawa/strace-from-scratch-in-rust against master#461e8078010433ff7de2db2aaae8a3cfb0847215 for pr-94962
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftetsuzawa%2Fstrace-from-scratch-in-rust" "/workspace/builds/worker-110/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-110/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tetsuzawa/strace-from-scratch-in-rust on toolchain 461e8078010433ff7de2db2aaae8a3cfb0847215
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tetsuzawa/strace-from-scratch-in-rust
[INFO] finished tweaking git repo https://github.com/tetsuzawa/strace-from-scratch-in-rust
[INFO] tweaked toml for git repo https://github.com/tetsuzawa/strace-from-scratch-in-rust written to /workspace/builds/worker-110/source/Cargo.toml
[INFO] crate git repo https://github.com/tetsuzawa/strace-from-scratch-in-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fe6c6c6a54c13db8dd284c97f80c400ad62c75005f08e0bad3369387bfb571b6
[INFO] running `Command { std: "docker" "start" "-a" "fe6c6c6a54c13db8dd284c97f80c400ad62c75005f08e0bad3369387bfb571b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fe6c6c6a54c13db8dd284c97f80c400ad62c75005f08e0bad3369387bfb571b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe6c6c6a54c13db8dd284c97f80c400ad62c75005f08e0bad3369387bfb571b6", kill_on_drop: false }`
[INFO] [stdout] fe6c6c6a54c13db8dd284c97f80c400ad62c75005f08e0bad3369387bfb571b6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 35fe43423b7fbf54a908a4d93e01b74b8844320ed6b7a9a40a607d5e7e777d97
[INFO] running `Command { std: "docker" "start" "-a" "35fe43423b7fbf54a908a4d93e01b74b8844320ed6b7a9a40a607d5e7e777d97", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling nix v0.23.1
[INFO] [stderr]    Compiling strace-from-scratch-in-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `nix::sys::signal::Signal`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use nix::sys::signal::Signal;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Add`
[INFO] [stdout]   --> src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::ops::Add;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/main.rs:46:17
[INFO] [stdout]    |
[INFO] [stdout] 45 |                 e => std::io::Error::from_raw_os_error(e as i32),
[INFO] [stdout]    |                 - matches any value
[INFO] [stdout] 46 |                 _ => std::io::Error::new(std::io::ErrorKind::Other, "unknown PTRACE_TRACEME error"),
[INFO] [stdout]    |                 ^ unreachable pattern
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.10s
[INFO] running `Command { std: "docker" "inspect" "35fe43423b7fbf54a908a4d93e01b74b8844320ed6b7a9a40a607d5e7e777d97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35fe43423b7fbf54a908a4d93e01b74b8844320ed6b7a9a40a607d5e7e777d97", kill_on_drop: false }`
[INFO] [stdout] 35fe43423b7fbf54a908a4d93e01b74b8844320ed6b7a9a40a607d5e7e777d97
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7b71d5a2028b543ed30864c79cb185e2cda20798b3af53ce3f1f298a4492a2c5
[INFO] running `Command { std: "docker" "start" "-a" "7b71d5a2028b543ed30864c79cb185e2cda20798b3af53ce3f1f298a4492a2c5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling strace-from-scratch-in-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `nix::sys::signal::Signal`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use nix::sys::signal::Signal;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Add`
[INFO] [stdout]   --> src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::ops::Add;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/main.rs:46:17
[INFO] [stdout]    |
[INFO] [stdout] 45 |                 e => std::io::Error::from_raw_os_error(e as i32),
[INFO] [stdout]    |                 - matches any value
[INFO] [stdout] 46 |                 _ => std::io::Error::new(std::io::ErrorKind::Other, "unknown PTRACE_TRACEME error"),
[INFO] [stdout]    |                 ^ unreachable pattern
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 53.22s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/strace_from_scratch_in_rust-7972e899817fbe7d)
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/strace_from_scratch_in_rust-3c637439d400998f)
[INFO] running `Command { std: "docker" "inspect" "7b71d5a2028b543ed30864c79cb185e2cda20798b3af53ce3f1f298a4492a2c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b71d5a2028b543ed30864c79cb185e2cda20798b3af53ce3f1f298a4492a2c5", kill_on_drop: false }`
[INFO] [stdout] 7b71d5a2028b543ed30864c79cb185e2cda20798b3af53ce3f1f298a4492a2c5