[INFO] cloning repository https://github.com/Pix6dwsx/is_palindrome
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Pix6dwsx/is_palindrome" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPix6dwsx%2Fis_palindrome", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPix6dwsx%2Fis_palindrome'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b20374960d28bd3e23e63e31d377e0530bc5b677
[INFO] checking Pix6dwsx/is_palindrome against try#969026c535f4240ff7866ef11207dfda18a26af6 for pr-146504
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPix6dwsx%2Fis_palindrome" "/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/Pix6dwsx/is_palindrome
[INFO] finished tweaking git repo https://github.com/Pix6dwsx/is_palindrome
[INFO] tweaked toml for git repo https://github.com/Pix6dwsx/is_palindrome written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Pix6dwsx/is_palindrome on toolchain 969026c535f4240ff7866ef11207dfda18a26af6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+969026c535f4240ff7866ef11207dfda18a26af6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Pix6dwsx/is_palindrome 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" "+969026c535f4240ff7866ef11207dfda18a26af6" "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-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+969026c535f4240ff7866ef11207dfda18a26af6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7c07e3f81f3fca37c1d9b657931cd17b16cdb6a95dafb3cc3a1b3c36e652e23b
[INFO] running `Command { std: "docker" "start" "-a" "7c07e3f81f3fca37c1d9b657931cd17b16cdb6a95dafb3cc3a1b3c36e652e23b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7c07e3f81f3fca37c1d9b657931cd17b16cdb6a95dafb3cc3a1b3c36e652e23b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c07e3f81f3fca37c1d9b657931cd17b16cdb6a95dafb3cc3a1b3c36e652e23b", kill_on_drop: false }`
[INFO] [stdout] 7c07e3f81f3fca37c1d9b657931cd17b16cdb6a95dafb3cc3a1b3c36e652e23b
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+969026c535f4240ff7866ef11207dfda18a26af6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8ba825bb442e78cd29b95170153d41cc9dfa734aae6668ac04742a80c33226f5
[INFO] running `Command { std: "docker" "start" "-a" "8ba825bb442e78cd29b95170153d41cc9dfa734aae6668ac04742a80c33226f5", kill_on_drop: false }`
[INFO] [stderr]     Checking is_palindrome v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] running `Command { std: "docker" "inspect" "8ba825bb442e78cd29b95170153d41cc9dfa734aae6668ac04742a80c33226f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ba825bb442e78cd29b95170153d41cc9dfa734aae6668ac04742a80c33226f5", kill_on_drop: false }`
[INFO] [stdout] 8ba825bb442e78cd29b95170153d41cc9dfa734aae6668ac04742a80c33226f5