[INFO] cloning repository https://github.com/valeshgopal/rust_concatenate_strings
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/valeshgopal/rust_concatenate_strings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvaleshgopal%2Frust_concatenate_strings", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvaleshgopal%2Frust_concatenate_strings'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3683f63a4d92b3477470f68d3eece9b48e017a8c
[INFO] checking valeshgopal/rust_concatenate_strings against try#0bdee9e879c87b7211d316e9152109cfd46c576b for pr-150097
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvaleshgopal%2Frust_concatenate_strings" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/valeshgopal/rust_concatenate_strings
[INFO] finished tweaking git repo https://github.com/valeshgopal/rust_concatenate_strings
[INFO] tweaked toml for git repo https://github.com/valeshgopal/rust_concatenate_strings written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/valeshgopal/rust_concatenate_strings on toolchain 0bdee9e879c87b7211d316e9152109cfd46c576b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0bdee9e879c87b7211d316e9152109cfd46c576b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/valeshgopal/rust_concatenate_strings 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" "+0bdee9e879c87b7211d316e9152109cfd46c576b" "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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+0bdee9e879c87b7211d316e9152109cfd46c576b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 66c4315716f57d11f132f270ecad9edf9c0bde6aec3c257487c80c91bbab1879
[INFO] running `Command { std: "docker" "start" "-a" "66c4315716f57d11f132f270ecad9edf9c0bde6aec3c257487c80c91bbab1879", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "66c4315716f57d11f132f270ecad9edf9c0bde6aec3c257487c80c91bbab1879", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66c4315716f57d11f132f270ecad9edf9c0bde6aec3c257487c80c91bbab1879", kill_on_drop: false }`
[INFO] [stdout] 66c4315716f57d11f132f270ecad9edf9c0bde6aec3c257487c80c91bbab1879
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+0bdee9e879c87b7211d316e9152109cfd46c576b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] caef7d834f3fdbe51454867644e57a0b300ac20d953a9302937b40ca50456993
[INFO] running `Command { std: "docker" "start" "-a" "caef7d834f3fdbe51454867644e57a0b300ac20d953a9302937b40ca50456993", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_project v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] running `Command { std: "docker" "inspect" "caef7d834f3fdbe51454867644e57a0b300ac20d953a9302937b40ca50456993", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "caef7d834f3fdbe51454867644e57a0b300ac20d953a9302937b40ca50456993", kill_on_drop: false }`
[INFO] [stdout] caef7d834f3fdbe51454867644e57a0b300ac20d953a9302937b40ca50456993