[INFO] cloning repository https://github.com/mtwatson/infix-postfix
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mtwatson/infix-postfix" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmtwatson%2Finfix-postfix", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmtwatson%2Finfix-postfix'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9c0552325ca79aa1d7faf0f11206eee11e9f9dc1
[INFO] testing mtwatson/infix-postfix against try#a7ee93192a766fb0dafa23def7154fc03cfcfc3e for pr-146989
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmtwatson%2Finfix-postfix" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mtwatson/infix-postfix
[INFO] finished tweaking git repo https://github.com/mtwatson/infix-postfix
[INFO] tweaked toml for git repo https://github.com/mtwatson/infix-postfix written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mtwatson/infix-postfix on toolchain a7ee93192a766fb0dafa23def7154fc03cfcfc3e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a7ee93192a766fb0dafa23def7154fc03cfcfc3e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mtwatson/infix-postfix 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" "+a7ee93192a766fb0dafa23def7154fc03cfcfc3e" "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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+a7ee93192a766fb0dafa23def7154fc03cfcfc3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 911c24faa809a25506f6aa524cfa69b92c535cf791f0aa02bb8b16412c8e8465
[INFO] running `Command { std: "docker" "start" "-a" "911c24faa809a25506f6aa524cfa69b92c535cf791f0aa02bb8b16412c8e8465", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "911c24faa809a25506f6aa524cfa69b92c535cf791f0aa02bb8b16412c8e8465", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "911c24faa809a25506f6aa524cfa69b92c535cf791f0aa02bb8b16412c8e8465", kill_on_drop: false }`
[INFO] [stdout] 911c24faa809a25506f6aa524cfa69b92c535cf791f0aa02bb8b16412c8e8465
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+a7ee93192a766fb0dafa23def7154fc03cfcfc3e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f7328c0ddde0ac0657d36d8f12041ab028d9f537c98c2fdc72188265b0e2f324
[INFO] running `Command { std: "docker" "start" "-a" "f7328c0ddde0ac0657d36d8f12041ab028d9f537c98c2fdc72188265b0e2f324", kill_on_drop: false }`
[INFO] [stderr]    Compiling infix-postfix v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `length` is never used
[INFO] [stdout]   --> src/main.rs:10:6
[INFO] [stdout]    |
[INFO] [stdout]  5 | impl<T> Stack<T> {
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 10 |   fn length(&self) -> usize {
[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 0.15s
[INFO] running `Command { std: "docker" "inspect" "f7328c0ddde0ac0657d36d8f12041ab028d9f537c98c2fdc72188265b0e2f324", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7328c0ddde0ac0657d36d8f12041ab028d9f537c98c2fdc72188265b0e2f324", kill_on_drop: false }`
[INFO] [stdout] f7328c0ddde0ac0657d36d8f12041ab028d9f537c98c2fdc72188265b0e2f324
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+a7ee93192a766fb0dafa23def7154fc03cfcfc3e" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5c6df8620632233c50b4d5f1168eb841478f9ca8f325e5f8bea89527163657dd
[INFO] running `Command { std: "docker" "start" "-a" "5c6df8620632233c50b4d5f1168eb841478f9ca8f325e5f8bea89527163657dd", kill_on_drop: false }`
[INFO] [stderr]    Compiling infix-postfix v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `length` is never used
[INFO] [stdout]   --> src/main.rs:10:6
[INFO] [stdout]    |
[INFO] [stdout]  5 | impl<T> Stack<T> {
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 10 |   fn length(&self) -> usize {
[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 0.34s
[INFO] running `Command { std: "docker" "inspect" "5c6df8620632233c50b4d5f1168eb841478f9ca8f325e5f8bea89527163657dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c6df8620632233c50b4d5f1168eb841478f9ca8f325e5f8bea89527163657dd", kill_on_drop: false }`
[INFO] [stdout] 5c6df8620632233c50b4d5f1168eb841478f9ca8f325e5f8bea89527163657dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+a7ee93192a766fb0dafa23def7154fc03cfcfc3e" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f44d4a2e1afac33bfbbee74640039bb21b03fa9f9d03f9e7d7c73eb3bb22e632
[INFO] running `Command { std: "docker" "start" "-a" "f44d4a2e1afac33bfbbee74640039bb21b03fa9f9d03f9e7d7c73eb3bb22e632", kill_on_drop: false }`
[INFO] [stderr] warning: method `length` is never used
[INFO] [stderr]   --> src/main.rs:10:6
[INFO] [stderr]    |
[INFO] [stderr]  5 | impl<T> Stack<T> {
[INFO] [stderr]    | ---------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 10 |   fn length(&self) -> usize {
[INFO] [stderr]    |      ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `infix-postfix` (bin "infix-postfix" test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/infix_postfix-6a0d206a50f772da)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f44d4a2e1afac33bfbbee74640039bb21b03fa9f9d03f9e7d7c73eb3bb22e632", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f44d4a2e1afac33bfbbee74640039bb21b03fa9f9d03f9e7d7c73eb3bb22e632", kill_on_drop: false }`
[INFO] [stdout] f44d4a2e1afac33bfbbee74640039bb21b03fa9f9d03f9e7d7c73eb3bb22e632