[INFO] cloning repository https://github.com/ryankav/rustlings
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ryankav/rustlings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryankav%2Frustlings", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryankav%2Frustlings'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2a3b11ce63bf1c906efd8a884626ed951e39f0b0
[INFO] building ryankav/rustlings against master#0da281b6068a7d889ae89a9bd8991284cc9b7535 for pr-103610
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryankav%2Frustlings" "/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/ryankav/rustlings on toolchain 0da281b6068a7d889ae89a9bd8991284cc9b7535
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0da281b6068a7d889ae89a9bd8991284cc9b7535" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ryankav/rustlings
[INFO] finished tweaking git repo https://github.com/ryankav/rustlings
[INFO] tweaked toml for git repo https://github.com/ryankav/rustlings written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/ryankav/rustlings already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0da281b6068a7d889ae89a9bd8991284cc9b7535" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:83125433e4fff17b1ac56874832f668d9df75ee638575aca552b68e127bedee9" "/opt/rustwide/cargo-home/bin/cargo" "+0da281b6068a7d889ae89a9bd8991284cc9b7535" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fd5d5566bc249cb460accdda9f4da3ba84f27685dfd1106ce3441b7e6b1fd9e6
[INFO] running `Command { std: "docker" "start" "-a" "fd5d5566bc249cb460accdda9f4da3ba84f27685dfd1106ce3441b7e6b1fd9e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd5d5566bc249cb460accdda9f4da3ba84f27685dfd1106ce3441b7e6b1fd9e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd5d5566bc249cb460accdda9f4da3ba84f27685dfd1106ce3441b7e6b1fd9e6", kill_on_drop: false }`
[INFO] [stdout] fd5d5566bc249cb460accdda9f4da3ba84f27685dfd1106ce3441b7e6b1fd9e6
[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" "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@sha256:83125433e4fff17b1ac56874832f668d9df75ee638575aca552b68e127bedee9" "/opt/rustwide/cargo-home/bin/cargo" "+0da281b6068a7d889ae89a9bd8991284cc9b7535" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e7d13f830ec256d423b6c71daec5fc27a21542164dea81c638d3492f37d9f18d
[INFO] running `Command { std: "docker" "start" "-a" "e7d13f830ec256d423b6c71daec5fc27a21542164dea81c638d3492f37d9f18d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.100
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling instant v0.1.10
[INFO] [stderr]    Compiling smallvec v1.6.1
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling serde_derive v1.0.129
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling lock_api v0.4.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling serde v1.0.129
[INFO] [stderr]    Compiling slab v0.4.4
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling net2 v0.2.37
[INFO] [stderr]    Compiling parking_lot_core v0.8.3
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling terminal_size v0.1.17
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling inotify-sys v0.1.5
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling argh_shared v0.1.5
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling inotify v0.7.1
[INFO] [stderr]    Compiling termios v0.3.3
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling number_prefix v0.2.8
[INFO] [stderr]    Compiling filetime v0.2.15
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling mio-extras v2.0.6
[INFO] [stderr]    Compiling clicolors-control v1.0.1
[INFO] [stderr]    Compiling notify v4.0.17
[INFO] [stderr]    Compiling console v0.14.1
[INFO] [stderr]    Compiling console v0.7.7
[INFO] [stderr]    Compiling indicatif v0.10.3
[INFO] [stderr]    Compiling argh_derive v0.1.5
[INFO] [stderr]    Compiling argh v0.1.5
[INFO] [stderr]    Compiling toml v0.4.10
[INFO] [stderr]    Compiling rustlings v4.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.17s
[INFO] running `Command { std: "docker" "inspect" "e7d13f830ec256d423b6c71daec5fc27a21542164dea81c638d3492f37d9f18d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7d13f830ec256d423b6c71daec5fc27a21542164dea81c638d3492f37d9f18d", kill_on_drop: false }`
[INFO] [stdout] e7d13f830ec256d423b6c71daec5fc27a21542164dea81c638d3492f37d9f18d
[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" "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@sha256:83125433e4fff17b1ac56874832f668d9df75ee638575aca552b68e127bedee9" "/opt/rustwide/cargo-home/bin/cargo" "+0da281b6068a7d889ae89a9bd8991284cc9b7535" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1d36021ca1ea9ce3d87e1f7c3ddf7781175c89e6c543bcf3a7a140d7e8f752f0
[INFO] running `Command { std: "docker" "start" "-a" "1d36021ca1ea9ce3d87e1f7c3ddf7781175c89e6c543bcf3a7a140d7e8f752f0", 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" "1d36021ca1ea9ce3d87e1f7c3ddf7781175c89e6c543bcf3a7a140d7e8f752f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d36021ca1ea9ce3d87e1f7c3ddf7781175c89e6c543bcf3a7a140d7e8f752f0", kill_on_drop: false }`
[INFO] [stdout] 1d36021ca1ea9ce3d87e1f7c3ddf7781175c89e6c543bcf3a7a140d7e8f752f0