[INFO] cloning repository https://github.com/xuehaonan27/rust_coq
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xuehaonan27/rust_coq" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxuehaonan27%2Frust_coq", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxuehaonan27%2Frust_coq'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 40056e353f1f0ce0d9c07008b941dbd936e01cb4
[INFO] checking xuehaonan27/rust_coq against try#a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399 for pr-145770
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxuehaonan27%2Frust_coq" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/xuehaonan27/rust_coq
[INFO] finished tweaking git repo https://github.com/xuehaonan27/rust_coq
[INFO] tweaked toml for git repo https://github.com/xuehaonan27/rust_coq written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/xuehaonan27/rust_coq on toolchain a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/xuehaonan27/rust_coq 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" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b2554efa64e5d249027fd1db6cf1a0c86c2de9db890bf732fc1d8184afe345c1
[INFO] running `Command { std: "docker" "start" "-a" "b2554efa64e5d249027fd1db6cf1a0c86c2de9db890bf732fc1d8184afe345c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b2554efa64e5d249027fd1db6cf1a0c86c2de9db890bf732fc1d8184afe345c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2554efa64e5d249027fd1db6cf1a0c86c2de9db890bf732fc1d8184afe345c1", kill_on_drop: false }`
[INFO] [stdout] b2554efa64e5d249027fd1db6cf1a0c86c2de9db890bf732fc1d8184afe345c1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c1ba31b5562d8b214514a5c30f2dcc28aa25b107a79fb593b4338841db26703e
[INFO] running `Command { std: "docker" "start" "-a" "c1ba31b5562d8b214514a5c30f2dcc28aa25b107a79fb593b4338841db26703e", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_coq v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: enum `Peano` is never used
[INFO] [stdout]  --> src/peano.rs:7:6
[INFO] [stdout]   |
[INFO] [stdout] 7 | enum Peano {
[INFO] [stdout]   |      ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `pred` and `succ` are never used
[INFO] [stdout]   --> src/peano.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl Peano {
[INFO] [stdout]    | ---------- methods in this implementation
[INFO] [stdout] 13 |     fn pred(self) -> Self {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     fn succ(self) -> Self {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `Command { std: "docker" "inspect" "c1ba31b5562d8b214514a5c30f2dcc28aa25b107a79fb593b4338841db26703e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1ba31b5562d8b214514a5c30f2dcc28aa25b107a79fb593b4338841db26703e", kill_on_drop: false }`
[INFO] [stdout] c1ba31b5562d8b214514a5c30f2dcc28aa25b107a79fb593b4338841db26703e
