[INFO] cloning repository https://github.com/Elekrisk/wl
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Elekrisk/wl" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FElekrisk%2Fwl", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FElekrisk%2Fwl'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 85c75beb99d3b66ee8c282dc7f13bc9ac17b13da
[INFO] checking Elekrisk/wl against try#df1b9bf194c9183fb7c0604484171064069ce232 for pr-149195-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FElekrisk%2Fwl" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Elekrisk/wl
[INFO] finished tweaking git repo https://github.com/Elekrisk/wl
[INFO] tweaked toml for git repo https://github.com/Elekrisk/wl written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Elekrisk/wl on toolchain df1b9bf194c9183fb7c0604484171064069ce232
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+df1b9bf194c9183fb7c0604484171064069ce232" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Elekrisk/wl 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" "+df1b9bf194c9183fb7c0604484171064069ce232" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num-rational v0.2.3
[INFO] [stderr]   Downloaded num-bigint v0.2.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:29356a839a4d14451438f794ce8414e707d72405f44418718d724d22562fe786" "/opt/rustwide/cargo-home/bin/cargo" "+df1b9bf194c9183fb7c0604484171064069ce232" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 40c1e29d19da0d6a829e35adb4e3ba05333251e4dc8db624bfd5fd8e20f447bf
[INFO] running `Command { std: "docker" "start" "-a" "40c1e29d19da0d6a829e35adb4e3ba05333251e4dc8db624bfd5fd8e20f447bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "40c1e29d19da0d6a829e35adb4e3ba05333251e4dc8db624bfd5fd8e20f447bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40c1e29d19da0d6a829e35adb4e3ba05333251e4dc8db624bfd5fd8e20f447bf", kill_on_drop: false }`
[INFO] [stdout] 40c1e29d19da0d6a829e35adb4e3ba05333251e4dc8db624bfd5fd8e20f447bf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:29356a839a4d14451438f794ce8414e707d72405f44418718d724d22562fe786" "/opt/rustwide/cargo-home/bin/cargo" "+df1b9bf194c9183fb7c0604484171064069ce232" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1ad8d1dd3ea596e44de0a537d655298627b5650ceb012599d89bef448980780b
[INFO] running `Command { std: "docker" "start" "-a" "1ad8d1dd3ea596e44de0a537d655298627b5650ceb012599d89bef448980780b", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-bigint v0.2.5
[INFO] [stderr]    Compiling num-rational v0.2.3
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.40
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]     Checking wl v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/main.rs:230:25
[INFO] [stdout]     |
[INFO] [stdout] 230 |                         _ => return Err("Addition error".to_string())
[INFO] [stdout]     |                         ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/main.rs:230:25
[INFO] [stdout]     |
[INFO] [stdout] 198 |                         (Value::String(a), Value::String(b)) =>
[INFO] [stdout]     |                         ------------------------------------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 203 |                         (Value::Integer(a), Value::String(b)) =>
[INFO] [stdout]     |                         ------------------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 207 |                         (Value::String(a), Value::Integer(b)) =>
[INFO] [stdout]     |                         ------------------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 211 |                         (Value::Integer(a), Value::Integer(b)) =>
[INFO] [stdout]     |                         -------------------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 230 |                         _ => return Err("Addition error".to_string())
[INFO] [stdout]     |                         ^ ...and 3 other patterns collectively make this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/main.rs:230:25
[INFO] [stdout]     |
[INFO] [stdout] 230 |                         _ => return Err("Addition error".to_string())
[INFO] [stdout]     |                         ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/main.rs:230:25
[INFO] [stdout]     |
[INFO] [stdout] 198 |                         (Value::String(a), Value::String(b)) =>
[INFO] [stdout]     |                         ------------------------------------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 203 |                         (Value::Integer(a), Value::String(b)) =>
[INFO] [stdout]     |                         ------------------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 207 |                         (Value::String(a), Value::Integer(b)) =>
[INFO] [stdout]     |                         ------------------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 211 |                         (Value::Integer(a), Value::Integer(b)) =>
[INFO] [stdout]     |                         -------------------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 230 |                         _ => return Err("Addition error".to_string())
[INFO] [stdout]     |                         ^ ...and 3 other patterns collectively make this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.01s
[INFO] running `Command { std: "docker" "inspect" "1ad8d1dd3ea596e44de0a537d655298627b5650ceb012599d89bef448980780b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ad8d1dd3ea596e44de0a537d655298627b5650ceb012599d89bef448980780b", kill_on_drop: false }`
[INFO] [stdout] 1ad8d1dd3ea596e44de0a537d655298627b5650ceb012599d89bef448980780b