[INFO] cloning repository https://github.com/pawan9489/rustlings
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pawan9489/rustlings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpawan9489%2Frustlings", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpawan9489%2Frustlings'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a68c82eaec27c700bd37e24126dda672f89dc8c3
[INFO] checking pawan9489/rustlings against master#2ad4eb207b369017f5140918b5e4b0d3650b46b0 for pr-95611
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpawan9489%2Frustlings" "/workspace/builds/worker-51/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-51/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pawan9489/rustlings on toolchain 2ad4eb207b369017f5140918b5e4b0d3650b46b0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2ad4eb207b369017f5140918b5e4b0d3650b46b0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/pawan9489/rustlings
[INFO] finished tweaking git repo https://github.com/pawan9489/rustlings
[INFO] tweaked toml for git repo https://github.com/pawan9489/rustlings written to /workspace/builds/worker-51/source/Cargo.toml
[INFO] crate git repo https://github.com/pawan9489/rustlings already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2ad4eb207b369017f5140918b5e4b0d3650b46b0" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded instant v0.1.10
[INFO] [stderr]   Downloaded serde v1.0.129
[INFO] [stderr]   Downloaded argh_shared v0.1.5
[INFO] [stderr]   Downloaded argh v0.1.5
[INFO] [stderr]   Downloaded toml v0.4.10
[INFO] [stderr]   Downloaded lazycell v1.3.0
[INFO] [stderr]   Downloaded inotify-sys v0.1.5
[INFO] [stderr]   Downloaded filetime v0.2.15
[INFO] [stderr]   Downloaded predicates-tree v1.0.3
[INFO] [stderr]   Downloaded syn v1.0.75
[INFO] [stderr]   Downloaded proc-macro2 v1.0.28
[INFO] [stderr]   Downloaded assert_cmd v0.11.1
[INFO] [stderr]   Downloaded escargot v0.4.0
[INFO] [stderr]   Downloaded clicolors-control v1.0.1
[INFO] [stderr]   Downloaded serde_json v1.0.66
[INFO] [stderr]   Downloaded argh_derive v0.1.5
[INFO] [stderr]   Downloaded termios v0.3.3
[INFO] [stderr]   Downloaded number_prefix v0.2.8
[INFO] [stderr]   Downloaded indicatif v0.10.3
[INFO] [stderr]   Downloaded predicates v1.0.8
[INFO] [stderr]   Downloaded predicates-core v1.0.2
[INFO] [stderr]   Downloaded walkdir v2.3.2
[INFO] [stderr]   Downloaded console v0.7.7
[INFO] [stderr]   Downloaded notify v4.0.17
[INFO] [stderr]   Downloaded serde_derive v1.0.129
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/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:fd6e315fe1d87bcb2c452ec5cc96a17426cdc68c8a579d2e15b282cf6465d787" "/opt/rustwide/cargo-home/bin/cargo" "+2ad4eb207b369017f5140918b5e4b0d3650b46b0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 69c85d50921a5ca126879098def9927073edca5a5377fdaede558089f99d86fa
[INFO] running `Command { std: "docker" "start" "-a" "69c85d50921a5ca126879098def9927073edca5a5377fdaede558089f99d86fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "69c85d50921a5ca126879098def9927073edca5a5377fdaede558089f99d86fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69c85d50921a5ca126879098def9927073edca5a5377fdaede558089f99d86fa", kill_on_drop: false }`
[INFO] [stdout] 69c85d50921a5ca126879098def9927073edca5a5377fdaede558089f99d86fa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/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:fd6e315fe1d87bcb2c452ec5cc96a17426cdc68c8a579d2e15b282cf6465d787" "/opt/rustwide/cargo-home/bin/cargo" "+2ad4eb207b369017f5140918b5e4b0d3650b46b0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bedaa9aab86a3f8145c287bfc3c9ffd2e0521da395d1cf4518782eac1044cc8f
[INFO] running `Command { std: "docker" "start" "-a" "bedaa9aab86a3f8145c287bfc3c9ffd2e0521da395d1cf4518782eac1044cc8f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "bedaa9aab86a3f8145c287bfc3c9ffd2e0521da395d1cf4518782eac1044cc8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bedaa9aab86a3f8145c287bfc3c9ffd2e0521da395d1cf4518782eac1044cc8f", kill_on_drop: false }`
[INFO] [stdout] bedaa9aab86a3f8145c287bfc3c9ffd2e0521da395d1cf4518782eac1044cc8f