[INFO] cloning repository https://github.com/meta1209/rust-tutorial
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/meta1209/rust-tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmeta1209%2Frust-tutorial", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmeta1209%2Frust-tutorial'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b4608bcc89a2e5b75b18d20c4f59876d8d1b9370
[INFO] checking meta1209/rust-tutorial against master#74c3f5a146860c94ff4d179fc3bfa34f879adf41 for pr-120248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmeta1209%2Frust-tutorial" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/meta1209/rust-tutorial on toolchain 74c3f5a146860c94ff4d179fc3bfa34f879adf41
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+74c3f5a146860c94ff4d179fc3bfa34f879adf41" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/meta1209/rust-tutorial
[INFO] finished tweaking git repo https://github.com/meta1209/rust-tutorial
[INFO] tweaked toml for git repo https://github.com/meta1209/rust-tutorial written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/meta1209/rust-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" "+74c3f5a146860c94ff4d179fc3bfa34f879adf41" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking meta1209/rust-tutorial against try#13cae6066db2d5e6c9bb508caceec8d34ca49980 for pr-120248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmeta1209%2Frust-tutorial" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/meta1209/rust-tutorial on toolchain 13cae6066db2d5e6c9bb508caceec8d34ca49980
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+13cae6066db2d5e6c9bb508caceec8d34ca49980" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/meta1209/rust-tutorial
[INFO] finished tweaking git repo https://github.com/meta1209/rust-tutorial
[INFO] tweaked toml for git repo https://github.com/meta1209/rust-tutorial written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/meta1209/rust-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" "+13cae6066db2d5e6c9bb508caceec8d34ca49980" "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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+13cae6066db2d5e6c9bb508caceec8d34ca49980" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f419ab8470b0e2cb998672e2ee4f3da63d5dd1594d69ad9a3315cd89e0a3565f
[INFO] running `Command { std: "docker" "start" "-a" "f419ab8470b0e2cb998672e2ee4f3da63d5dd1594d69ad9a3315cd89e0a3565f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f419ab8470b0e2cb998672e2ee4f3da63d5dd1594d69ad9a3315cd89e0a3565f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f419ab8470b0e2cb998672e2ee4f3da63d5dd1594d69ad9a3315cd89e0a3565f", kill_on_drop: false }`
[INFO] [stdout] f419ab8470b0e2cb998672e2ee4f3da63d5dd1594d69ad9a3315cd89e0a3565f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+13cae6066db2d5e6c9bb508caceec8d34ca49980" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 776d5117814945490c55b71e0b25d38f3d01f2a9469a09fd881161a05d39c454
[INFO] running `Command { std: "docker" "start" "-a" "776d5117814945490c55b71e0b25d38f3d01f2a9469a09fd881161a05d39c454", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-tutorial v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::num::Wrapping`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::num::Wrapping;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::num::Wrapping`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::num::Wrapping;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Green` and `Yellow` are never constructed
[INFO] [stdout]   --> src/main.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | enum TrafficLight {
[INFO] [stdout]    |      ------------ variants in this enum
[INFO] [stdout] 33 |     Red,
[INFO] [stdout] 34 |     Green,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 35 |     Yellow,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Round` and `Triangle` are never constructed
[INFO] [stdout]   --> src/main.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 63 | enum GeometryType {
[INFO] [stdout]    |      ------------ variants in this enum
[INFO] [stdout] 64 |     Square,
[INFO] [stdout] 65 |     Round,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 66 |     Triangle
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Green` and `Yellow` are never constructed
[INFO] [stdout]   --> src/main.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | enum TrafficLight {
[INFO] [stdout]    |      ------------ variants in this enum
[INFO] [stdout] 33 |     Red,
[INFO] [stdout] 34 |     Green,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 35 |     Yellow,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Round` and `Triangle` are never constructed
[INFO] [stdout]   --> src/main.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 63 | enum GeometryType {
[INFO] [stdout]    |      ------------ variants in this enum
[INFO] [stdout] 64 |     Square,
[INFO] [stdout] 65 |     Round,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 66 |     Triangle
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] running `Command { std: "docker" "inspect" "776d5117814945490c55b71e0b25d38f3d01f2a9469a09fd881161a05d39c454", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "776d5117814945490c55b71e0b25d38f3d01f2a9469a09fd881161a05d39c454", kill_on_drop: false }`
[INFO] [stdout] 776d5117814945490c55b71e0b25d38f3d01f2a9469a09fd881161a05d39c454