[INFO] cloning repository https://github.com/carrotflakes/fnumbuf
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/carrotflakes/fnumbuf" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarrotflakes%2Ffnumbuf", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarrotflakes%2Ffnumbuf'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cdea6ee41426ddc1fff96ee605bd3be259d5d334
[INFO] checking carrotflakes/fnumbuf against try#3d9fdbff4f377de96b3a51174e7a64086bee9a5c for pr-81477
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarrotflakes%2Ffnumbuf" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/carrotflakes/fnumbuf on toolchain 3d9fdbff4f377de96b3a51174e7a64086bee9a5c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/carrotflakes/fnumbuf
[INFO] finished tweaking git repo https://github.com/carrotflakes/fnumbuf
[INFO] tweaked toml for git repo https://github.com/carrotflakes/fnumbuf written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/carrotflakes/fnumbuf already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fnum v0.0.1
[INFO] [stderr]   Downloaded fnum-derive v0.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9ddd8c57a968b76b25c53bba7f3ea3c70fb6d2f8af68c22cbbbef1dc786c5264
[INFO] running `Command { std: "docker" "start" "-a" "9ddd8c57a968b76b25c53bba7f3ea3c70fb6d2f8af68c22cbbbef1dc786c5264", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9ddd8c57a968b76b25c53bba7f3ea3c70fb6d2f8af68c22cbbbef1dc786c5264", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ddd8c57a968b76b25c53bba7f3ea3c70fb6d2f8af68c22cbbbef1dc786c5264", kill_on_drop: false }`
[INFO] [stdout] 9ddd8c57a968b76b25c53bba7f3ea3c70fb6d2f8af68c22cbbbef1dc786c5264
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2fc677dd76a7dbc7a9e1feb2bc2be5b0d6c3cc3a79c3fcbe9ca10c5aab2e7af6
[INFO] running `Command { std: "docker" "start" "-a" "2fc677dd76a7dbc7a9e1feb2bc2be5b0d6c3cc3a79c3fcbe9ca10c5aab2e7af6", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling syn v1.0.55
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling fnum-derive v0.0.1
[INFO] [stderr]     Checking fnum v0.0.1
[INFO] [stderr]     Checking fnumbuf v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.50s
[INFO] running `Command { std: "docker" "inspect" "2fc677dd76a7dbc7a9e1feb2bc2be5b0d6c3cc3a79c3fcbe9ca10c5aab2e7af6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fc677dd76a7dbc7a9e1feb2bc2be5b0d6c3cc3a79c3fcbe9ca10c5aab2e7af6", kill_on_drop: false }`
[INFO] [stdout] 2fc677dd76a7dbc7a9e1feb2bc2be5b0d6c3cc3a79c3fcbe9ca10c5aab2e7af6