[INFO] cloning repository https://github.com/fbm3307/LearningRust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fbm3307/LearningRust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffbm3307%2FLearningRust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffbm3307%2FLearningRust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9419b16d88bd9cbbd2ead4ca3abec7c020094b7c
[INFO] checking fbm3307/LearningRust against try#e071e73523bfcdcab2878dbf652ac8ebb9b9eee4 for pr-144386
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffbm3307%2FLearningRust" "/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/fbm3307/LearningRust
[INFO] finished tweaking git repo https://github.com/fbm3307/LearningRust
[INFO] tweaked toml for git repo https://github.com/fbm3307/LearningRust written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/fbm3307/LearningRust on toolchain e071e73523bfcdcab2878dbf652ac8ebb9b9eee4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e071e73523bfcdcab2878dbf652ac8ebb9b9eee4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/fbm3307/LearningRust 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" "+e071e73523bfcdcab2878dbf652ac8ebb9b9eee4" "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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+e071e73523bfcdcab2878dbf652ac8ebb9b9eee4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 68e3e4f24a186e0343bbe40548a8cffcf6f818f987b60b8e99fd8488d7d977e3
[INFO] running `Command { std: "docker" "start" "-a" "68e3e4f24a186e0343bbe40548a8cffcf6f818f987b60b8e99fd8488d7d977e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "68e3e4f24a186e0343bbe40548a8cffcf6f818f987b60b8e99fd8488d7d977e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68e3e4f24a186e0343bbe40548a8cffcf6f818f987b60b8e99fd8488d7d977e3", kill_on_drop: false }`
[INFO] [stdout] 68e3e4f24a186e0343bbe40548a8cffcf6f818f987b60b8e99fd8488d7d977e3
[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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+e071e73523bfcdcab2878dbf652ac8ebb9b9eee4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ff660b5ee7c64599cc0316bcc2ed0662225edd5f8a97160c38495cc53013b46d
[INFO] running `Command { std: "docker" "start" "-a" "ff660b5ee7c64599cc0316bcc2ed0662225edd5f8a97160c38495cc53013b46d", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.156
[INFO] [stderr]     Checking smawk v0.3.1
[INFO] [stderr]    Compiling serde_json v1.0.94
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]     Checking ryu v1.0.13
[INFO] [stderr]     Checking smallvec v0.4.5
[INFO] [stderr]     Checking itoa v1.0.6
[INFO] [stderr]     Checking textwrap v0.13.4
[INFO] [stderr]     Checking ferris-says v0.2.1
[INFO] [stderr]     Checking learningrust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.43s
[INFO] running `Command { std: "docker" "inspect" "ff660b5ee7c64599cc0316bcc2ed0662225edd5f8a97160c38495cc53013b46d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff660b5ee7c64599cc0316bcc2ed0662225edd5f8a97160c38495cc53013b46d", kill_on_drop: false }`
[INFO] [stdout] ff660b5ee7c64599cc0316bcc2ed0662225edd5f8a97160c38495cc53013b46d