[INFO] cloning repository https://github.com/tidys/learn-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tidys/learn-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftidys%2Flearn-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftidys%2Flearn-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 976d18e9fbc3766daa4f331521debbe2b978d562
[INFO] checking tidys/learn-rust against master#8387315ab3c26a57a1f53a90f188f0bc88514bca for pr-124605
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftidys%2Flearn-rust" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tidys/learn-rust on toolchain 8387315ab3c26a57a1f53a90f188f0bc88514bca
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8387315ab3c26a57a1f53a90f188f0bc88514bca" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tidys/learn-rust
[INFO] finished tweaking git repo https://github.com/tidys/learn-rust
[INFO] tweaked toml for git repo https://github.com/tidys/learn-rust written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/tidys/learn-rust 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" "+8387315ab3c26a57a1f53a90f188f0bc88514bca" "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 tidys/learn-rust against try#fcc50f77e1a14e407d895972348a0ff09eafc210 for pr-124605
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftidys%2Flearn-rust" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tidys/learn-rust on toolchain fcc50f77e1a14e407d895972348a0ff09eafc210
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fcc50f77e1a14e407d895972348a0ff09eafc210" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tidys/learn-rust
[INFO] finished tweaking git repo https://github.com/tidys/learn-rust
[INFO] tweaked toml for git repo https://github.com/tidys/learn-rust written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/tidys/learn-rust 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" "+fcc50f77e1a14e407d895972348a0ff09eafc210" "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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+fcc50f77e1a14e407d895972348a0ff09eafc210" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 50f861250170399167ad1ef42a836476d0553225f802f1bf4f2bf406f8452bb4
[INFO] running `Command { std: "docker" "start" "-a" "50f861250170399167ad1ef42a836476d0553225f802f1bf4f2bf406f8452bb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "50f861250170399167ad1ef42a836476d0553225f802f1bf4f2bf406f8452bb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50f861250170399167ad1ef42a836476d0553225f802f1bf4f2bf406f8452bb4", kill_on_drop: false }`
[INFO] [stdout] 50f861250170399167ad1ef42a836476d0553225f802f1bf4f2bf406f8452bb4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+fcc50f77e1a14e407d895972348a0ff09eafc210" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e441add21b9ae1bb92e8a101b76597bfc2cfde5e2f9091594696b31b3bda273b
[INFO] running `Command { std: "docker" "start" "-a" "e441add21b9ae1bb92e8a101b76597bfc2cfde5e2f9091594696b31b3bda273b", kill_on_drop: false }`
[INFO] [stderr]     Checking learn-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0005]: refutable pattern in local binding
[INFO] [stdout]  --> src/main.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let b=22;
[INFO] [stdout]   |         ^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         patterns `i32::MIN..=11_i32` and `13_i32..=i32::MAX` not covered
[INFO] [stdout]   |         missing patterns are not covered because `b` is interpreted as a constant pattern, not a new variable
[INFO] [stdout]   |         help: introduce a variable instead: `b_var`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant
[INFO] [stdout]   = note: for more information, visit https://doc.rust-lang.org/book/ch18-02-refutability.html
[INFO] [stdout]   = note: the matched value is of type `i32`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0005]: refutable pattern in local binding
[INFO] [stdout]  --> src/main.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let b=22;
[INFO] [stdout]   |         ^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         patterns `i32::MIN..=11_i32` and `13_i32..=i32::MAX` not covered
[INFO] [stdout]   |         missing patterns are not covered because `b` is interpreted as a constant pattern, not a new variable
[INFO] [stdout]   |         help: introduce a variable instead: `b_var`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant
[INFO] [stdout]   = note: for more information, visit https://doc.rust-lang.org/book/ch18-02-refutability.html
[INFO] [stdout]   = note: the matched value is of type `i32`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0005`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0005`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `learn-rust` (bin "learn-rust") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `learn-rust` (bin "learn-rust" test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "e441add21b9ae1bb92e8a101b76597bfc2cfde5e2f9091594696b31b3bda273b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e441add21b9ae1bb92e8a101b76597bfc2cfde5e2f9091594696b31b3bda273b", kill_on_drop: false }`
[INFO] [stdout] e441add21b9ae1bb92e8a101b76597bfc2cfde5e2f9091594696b31b3bda273b