[INFO] cloning repository https://github.com/dsp56001/rust_guessing_game
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dsp56001/rust_guessing_game" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdsp56001%2Frust_guessing_game", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdsp56001%2Frust_guessing_game'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fab8b8d454be28c4aa08a7e382e5f5df2c580fd8
[INFO] checking dsp56001/rust_guessing_game against master#1ab98933fa75d72e882b86feac1a0be3a5b02cb0 for pr-83850
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdsp56001%2Frust_guessing_game" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dsp56001/rust_guessing_game on toolchain 1ab98933fa75d72e882b86feac1a0be3a5b02cb0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1ab98933fa75d72e882b86feac1a0be3a5b02cb0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dsp56001/rust_guessing_game
[INFO] finished tweaking git repo https://github.com/dsp56001/rust_guessing_game
[INFO] tweaked toml for git repo https://github.com/dsp56001/rust_guessing_game written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/dsp56001/rust_guessing_game already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1ab98933fa75d72e882b86feac1a0be3a5b02cb0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded smallvec v0.4.5
[INFO] [stderr]   Downloaded adler32 v1.1.0
[INFO] [stderr]   Downloaded ferris-says v0.1.2
[INFO] [stderr]   Downloaded backtrace v0.3.49
[INFO] [stderr]   Downloaded addr2line v0.12.2
[INFO] [stderr]   Downloaded hermit-abi v0.1.14
[INFO] [stderr]   Downloaded gimli v0.21.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+1ab98933fa75d72e882b86feac1a0be3a5b02cb0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2d628a2fe4cd0db2979d79bf36919f1d5ed3723b00ddb8e5b2091d28e675d1e5
[INFO] running `Command { std: "docker" "start" "-a" "2d628a2fe4cd0db2979d79bf36919f1d5ed3723b00ddb8e5b2091d28e675d1e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2d628a2fe4cd0db2979d79bf36919f1d5ed3723b00ddb8e5b2091d28e675d1e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d628a2fe4cd0db2979d79bf36919f1d5ed3723b00ddb8e5b2091d28e675d1e5", kill_on_drop: false }`
[INFO] [stdout] 2d628a2fe4cd0db2979d79bf36919f1d5ed3723b00ddb8e5b2091d28e675d1e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+1ab98933fa75d72e882b86feac1a0be3a5b02cb0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3c9a3a2c8cabaf1227836ccf41942d969d96f70e78421f88708d6769fdbb2431
[INFO] running `Command { std: "docker" "start" "-a" "3c9a3a2c8cabaf1227836ccf41942d969d96f70e78421f88708d6769fdbb2431", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]     Checking adler32 v1.1.0
[INFO] [stderr]     Checking gimli v0.21.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking object v0.20.0
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking smallvec v0.4.5
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking miniz_oxide v0.3.7
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking clap v2.33.1
[INFO] [stderr]     Checking addr2line v0.12.2
[INFO] [stderr]     Checking backtrace v0.3.49
[INFO] [stderr]     Checking error-chain v0.10.0
[INFO] [stderr]     Checking ferris-says v0.1.2
[INFO] [stderr]     Checking guessing_game v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.86s
[INFO] running `Command { std: "docker" "inspect" "3c9a3a2c8cabaf1227836ccf41942d969d96f70e78421f88708d6769fdbb2431", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c9a3a2c8cabaf1227836ccf41942d969d96f70e78421f88708d6769fdbb2431", kill_on_drop: false }`
[INFO] [stdout] 3c9a3a2c8cabaf1227836ccf41942d969d96f70e78421f88708d6769fdbb2431