[INFO] cloning repository https://github.com/hojinahn4234/enum_tutorial
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hojinahn4234/enum_tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhojinahn4234%2Fenum_tutorial", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhojinahn4234%2Fenum_tutorial'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bbcb779829fa356e7b1fa694d3e7736cc51dc737
[INFO] testing hojinahn4234/enum_tutorial against master#ebf0cf75d368c035f4c7e7246d203bd469ee4a51 for pr-137940
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhojinahn4234%2Fenum_tutorial" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hojinahn4234/enum_tutorial on toolchain ebf0cf75d368c035f4c7e7246d203bd469ee4a51
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ebf0cf75d368c035f4c7e7246d203bd469ee4a51" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hojinahn4234/enum_tutorial
[INFO] finished tweaking git repo https://github.com/hojinahn4234/enum_tutorial
[INFO] tweaked toml for git repo https://github.com/hojinahn4234/enum_tutorial written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/hojinahn4234/enum_tutorial 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" "+ebf0cf75d368c035f4c7e7246d203bd469ee4a51" "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-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+ebf0cf75d368c035f4c7e7246d203bd469ee4a51" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bf2ada456ed4294d2101c5687a37ceb7f397a9669f6b1f8bee84acbb51d7586e
[INFO] running `Command { std: "docker" "start" "-a" "bf2ada456ed4294d2101c5687a37ceb7f397a9669f6b1f8bee84acbb51d7586e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bf2ada456ed4294d2101c5687a37ceb7f397a9669f6b1f8bee84acbb51d7586e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf2ada456ed4294d2101c5687a37ceb7f397a9669f6b1f8bee84acbb51d7586e", kill_on_drop: false }`
[INFO] [stdout] bf2ada456ed4294d2101c5687a37ceb7f397a9669f6b1f8bee84acbb51d7586e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+ebf0cf75d368c035f4c7e7246d203bd469ee4a51" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1b347315f5d6c717d78b2d567c4adcbec29815790203598e35471d00aa4bb58f
[INFO] running `Command { std: "docker" "start" "-a" "1b347315f5d6c717d78b2d567c4adcbec29815790203598e35471d00aa4bb58f", kill_on_drop: false }`
[INFO] [stderr]    Compiling enum_tutorial v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `six`
[INFO] [stdout]   --> src/main.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let six = plus_one(five);
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_six`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `none`
[INFO] [stdout]   --> src/main.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let none = plus_one(None);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_none`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num_spaces`
[INFO] [stdout]   --> src/main.rs:54:16
[INFO] [stdout]    |
[INFO] [stdout] 54 | fn move_player(num_spaces: u8) {}
[INFO] [stdout]    |                ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_spaces`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Nickel` and `Dime` are never constructed
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Coin {
[INFO] [stdout]   |      ---- variants in this enum
[INFO] [stdout] 2 |     Penny,
[INFO] [stdout] 3 |     Nickel,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 4 |     Dime,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Gangwon`, `Chungcheong`, `Gyeongsang`, `Jeolla`, and `Jeju` are never constructed
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | enum KrState {
[INFO] [stdout]    |      ------- variants in this enum
[INFO] [stdout] 10 |     Gyeonggi,
[INFO] [stdout] 11 |     Gangwon,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 12 |     Chungcheong,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 13 |     Gyeongsang,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 14 |     Jeolla,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 15 |     Jeju,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `KrState` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `coin_not_quarter` is never used
[INFO] [stdout]   --> src/main.rs:71:4
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn coin_not_quarter(coin: Coin) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "1b347315f5d6c717d78b2d567c4adcbec29815790203598e35471d00aa4bb58f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b347315f5d6c717d78b2d567c4adcbec29815790203598e35471d00aa4bb58f", kill_on_drop: false }`
[INFO] [stdout] 1b347315f5d6c717d78b2d567c4adcbec29815790203598e35471d00aa4bb58f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+ebf0cf75d368c035f4c7e7246d203bd469ee4a51" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dde03d690797079e3e3c972ff9bd925ada5ac446355d1751f2267effbf0882b6
[INFO] running `Command { std: "docker" "start" "-a" "dde03d690797079e3e3c972ff9bd925ada5ac446355d1751f2267effbf0882b6", kill_on_drop: false }`
[INFO] [stderr] Error response from daemon: failed to create task for container: failed to create shim task: OCI runtime create failed: runc create failed: unable to start container process: error during container init: error mounting "/var/lib/crater-agent-workspace/cargo-home" to rootfs at "/opt/rustwide/cargo-home": mkdir /var/lib/docker/overlay2/bb5e831c29ce6818caf0deb4c7a1fc7cc64f741db51de6a4589ee5e9affd58f1/merged/opt/rustwide/cargo-home: no space left on device: unknown
[INFO] running `Command { std: "docker" "inspect" "dde03d690797079e3e3c972ff9bd925ada5ac446355d1751f2267effbf0882b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dde03d690797079e3e3c972ff9bd925ada5ac446355d1751f2267effbf0882b6", kill_on_drop: false }`
[INFO] [stdout] dde03d690797079e3e3c972ff9bd925ada5ac446355d1751f2267effbf0882b6