[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#b56aaec52bc0fa35591a872fb4aac81f606e265c for pr-122661-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftidys%2Flearn-rust" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[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-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tidys/learn-rust on toolchain b56aaec52bc0fa35591a872fb4aac81f606e265c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b56aaec52bc0fa35591a872fb4aac81f606e265c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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" "+b56aaec52bc0fa35591a872fb4aac81f606e265c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+b56aaec52bc0fa35591a872fb4aac81f606e265c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0a13561180c08654d64610e0358e60d6626e5520a97d96568bef288ae7045354
[INFO] running `Command { std: "docker" "start" "-a" "0a13561180c08654d64610e0358e60d6626e5520a97d96568bef288ae7045354", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0a13561180c08654d64610e0358e60d6626e5520a97d96568bef288ae7045354", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a13561180c08654d64610e0358e60d6626e5520a97d96568bef288ae7045354", kill_on_drop: false }`
[INFO] [stdout] 0a13561180c08654d64610e0358e60d6626e5520a97d96568bef288ae7045354
[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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+b56aaec52bc0fa35591a872fb4aac81f606e265c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 19c020b56e3fbfe7e645fe3fb328dd707bc10889abbee9ebfbc9a383984ce139
[INFO] running `Command { std: "docker" "start" "-a" "19c020b56e3fbfe7e645fe3fb328dd707bc10889abbee9ebfbc9a383984ce139", 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] 4 |     const b:i32=12;
[INFO] [stdout]   |     ----------- missing patterns are not covered because `b` is interpreted as a constant pattern, not a new variable
[INFO] [stdout] 5 |     let b=22;
[INFO] [stdout]   |         ^ patterns `i32::MIN..=11_i32` and `13_i32..=i32::MAX` not covered
[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/ch19-02-refutability.html
[INFO] [stdout]   = note: the matched value is of type `i32`
[INFO] [stdout] help: introduce a variable instead
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let b_var=22;
[INFO] [stdout]   |          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0005]: refutable pattern in local binding
[INFO] [stdout]  --> src/main.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     const b:i32=12;
[INFO] [stdout]   |     ----------- missing patterns are not covered because `b` is interpreted as a constant pattern, not a new variable
[INFO] [stdout] 5 |     let b=22;
[INFO] [stdout]   |         ^ patterns `i32::MIN..=11_i32` and `13_i32..=i32::MAX` not covered
[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/ch19-02-refutability.html
[INFO] [stdout]   = note: the matched value is of type `i32`
[INFO] [stdout] help: introduce a variable instead
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let b_var=22;
[INFO] [stdout]   |          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0005`.
[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 1 previous error
[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 1 previous error
[INFO] running `Command { std: "docker" "inspect" "19c020b56e3fbfe7e645fe3fb328dd707bc10889abbee9ebfbc9a383984ce139", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19c020b56e3fbfe7e645fe3fb328dd707bc10889abbee9ebfbc9a383984ce139", kill_on_drop: false }`
[INFO] [stdout] 19c020b56e3fbfe7e645fe3fb328dd707bc10889abbee9ebfbc9a383984ce139