[INFO] cloning repository https://github.com/mio256/rust_practice_tmp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mio256/rust_practice_tmp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmio256%2Frust_practice_tmp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmio256%2Frust_practice_tmp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 559fbc7e80f7a6232479995253e8287d870c8f9e
[INFO] building mio256/rust_practice_tmp against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmio256%2Frust_practice_tmp" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mio256/rust_practice_tmp
[INFO] finished tweaking git repo https://github.com/mio256/rust_practice_tmp
[INFO] tweaked toml for git repo https://github.com/mio256/rust_practice_tmp written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mio256/rust_practice_tmp on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mio256/rust_practice_tmp 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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d17234a81225bf28e4a3560702e60e2ff2644ca17bb1cd6fa1ee28a569d31da4
[INFO] running `Command { std: "docker" "start" "-a" "d17234a81225bf28e4a3560702e60e2ff2644ca17bb1cd6fa1ee28a569d31da4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d17234a81225bf28e4a3560702e60e2ff2644ca17bb1cd6fa1ee28a569d31da4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d17234a81225bf28e4a3560702e60e2ff2644ca17bb1cd6fa1ee28a569d31da4", kill_on_drop: false }`
[INFO] [stdout] d17234a81225bf28e4a3560702e60e2ff2644ca17bb1cd6fa1ee28a569d31da4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a9c8057ba89dd20bee284dc397df047b5512a30ddf5fd684cc04eb722f039f8a
[INFO] running `Command { std: "docker" "start" "-a" "a9c8057ba89dd20bee284dc397df047b5512a30ddf5fd684cc04eb722f039f8a", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated functions `sub`, `mul`, and `div` are never used
[INFO] [stdout]   --> src/main.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout]  7 | impl Rational {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 35 |     fn sub(r1: &Self, r2: &Self) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |     fn mul(r1: &Self, r2: &Self) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 47 |     fn div(r1: &Self, r2: &Self) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `Command { std: "docker" "inspect" "a9c8057ba89dd20bee284dc397df047b5512a30ddf5fd684cc04eb722f039f8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9c8057ba89dd20bee284dc397df047b5512a30ddf5fd684cc04eb722f039f8a", kill_on_drop: false }`
[INFO] [stdout] a9c8057ba89dd20bee284dc397df047b5512a30ddf5fd684cc04eb722f039f8a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f0b31902bf513541a1a38ad32c545cf90f52a7901f10c509e7771f9401b68f2f
[INFO] running `Command { std: "docker" "start" "-a" "f0b31902bf513541a1a38ad32c545cf90f52a7901f10c509e7771f9401b68f2f", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated functions `sub`, `mul`, and `div` are never used
[INFO] [stdout]   --> src/main.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout]  7 | impl Rational {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 35 |     fn sub(r1: &Self, r2: &Self) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |     fn mul(r1: &Self, r2: &Self) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 47 |     fn div(r1: &Self, r2: &Self) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `Command { std: "docker" "inspect" "f0b31902bf513541a1a38ad32c545cf90f52a7901f10c509e7771f9401b68f2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0b31902bf513541a1a38ad32c545cf90f52a7901f10c509e7771f9401b68f2f", kill_on_drop: false }`
[INFO] [stdout] f0b31902bf513541a1a38ad32c545cf90f52a7901f10c509e7771f9401b68f2f