[INFO] cloning repository https://github.com/pwh-pwh/rs_clean
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pwh-pwh/rs_clean" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpwh-pwh%2Frs_clean", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpwh-pwh%2Frs_clean'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f9bd77879e56153de07cc64c2d336b27b89e9450
[INFO] checking pwh-pwh/rs_clean against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpwh-pwh%2Frs_clean" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pwh-pwh/rs_clean on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/pwh-pwh/rs_clean
[INFO] finished tweaking git repo https://github.com/pwh-pwh/rs_clean
[INFO] tweaked toml for git repo https://github.com/pwh-pwh/rs_clean written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/pwh-pwh/rs_clean 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b444e49c29e34eb6a7836237a0da53b7d2af07099aadead924ffda1b614e6e02
[INFO] running `Command { std: "docker" "start" "-a" "b444e49c29e34eb6a7836237a0da53b7d2af07099aadead924ffda1b614e6e02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b444e49c29e34eb6a7836237a0da53b7d2af07099aadead924ffda1b614e6e02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b444e49c29e34eb6a7836237a0da53b7d2af07099aadead924ffda1b614e6e02", kill_on_drop: false }`
[INFO] [stdout] b444e49c29e34eb6a7836237a0da53b7d2af07099aadead924ffda1b614e6e02
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9a0ffcb42011e9d61a524a7262ad8a10fa5554a3d24d1ac7aa567f112ee30a5a
[INFO] running `Command { std: "docker" "start" "-a" "9a0ffcb42011e9d61a524a7262ad8a10fa5554a3d24d1ac7aa567f112ee30a5a", kill_on_drop: false }`
[INFO] [stderr]     Checking rs_clean v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] running `Command { std: "docker" "inspect" "9a0ffcb42011e9d61a524a7262ad8a10fa5554a3d24d1ac7aa567f112ee30a5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a0ffcb42011e9d61a524a7262ad8a10fa5554a3d24d1ac7aa567f112ee30a5a", kill_on_drop: false }`
[INFO] [stdout] 9a0ffcb42011e9d61a524a7262ad8a10fa5554a3d24d1ac7aa567f112ee30a5a
[INFO] checking pwh-pwh/rs_clean against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpwh-pwh%2Frs_clean" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pwh-pwh/rs_clean on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/pwh-pwh/rs_clean
[INFO] finished tweaking git repo https://github.com/pwh-pwh/rs_clean
[INFO] tweaked toml for git repo https://github.com/pwh-pwh/rs_clean written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/pwh-pwh/rs_clean 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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9ba0ef1f7b8c57c05a01cd984956aa99238aa3c05e9560cd91e7db30205e7082
[INFO] running `Command { std: "docker" "start" "-a" "9ba0ef1f7b8c57c05a01cd984956aa99238aa3c05e9560cd91e7db30205e7082", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9ba0ef1f7b8c57c05a01cd984956aa99238aa3c05e9560cd91e7db30205e7082", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ba0ef1f7b8c57c05a01cd984956aa99238aa3c05e9560cd91e7db30205e7082", kill_on_drop: false }`
[INFO] [stdout] 9ba0ef1f7b8c57c05a01cd984956aa99238aa3c05e9560cd91e7db30205e7082
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 968b8e500a8bdf9efbc530cd86e52c3eea05cb2f9c74fc100971ee7eb6b42b31
[INFO] running `Command { std: "docker" "start" "-a" "968b8e500a8bdf9efbc530cd86e52c3eea05cb2f9c74fc100971ee7eb6b42b31", kill_on_drop: false }`
[INFO] [stderr]     Checking rs_clean v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0282]: type annotations needed for `Result<Output, _>`
[INFO] [stdout]   --> src/main.rs:19:17
[INFO] [stdout]    |
[INFO] [stdout] 19 |               let _ = cmd.output().map_err(|e| {
[INFO] [stdout]    |  _________________^___-
[INFO] [stdout] 20 | |                 eprintln!("{file} > {e:?}");
[INFO] [stdout] 21 | |                 exit(1)
[INFO] [stdout] 22 | |             });
[INFO] [stdout]    | |______________- type must be known at this point
[INFO] [stdout]    |
[INFO] [stdout] help: consider giving this pattern a type, where the type for type parameter `F` is specified
[INFO] [stdout]    |
[INFO] [stdout] 19 |             let _: Result<Output, _> = cmd.output().map_err(|e| {
[INFO] [stdout]    |                  +++++++++++++++++++
[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 E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rs_clean` (bin "rs_clean") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0282]: type annotations needed for `Result<Output, _>`
[INFO] [stdout]   --> src/main.rs:19:17
[INFO] [stdout]    |
[INFO] [stdout] 19 |               let _ = cmd.output().map_err(|e| {
[INFO] [stdout]    |  _________________^___-
[INFO] [stdout] 20 | |                 eprintln!("{file} > {e:?}");
[INFO] [stdout] 21 | |                 exit(1)
[INFO] [stdout] 22 | |             });
[INFO] [stdout]    | |______________- type must be known at this point
[INFO] [stdout]    |
[INFO] [stdout] help: consider giving this pattern a type, where the type for type parameter `F` is specified
[INFO] [stdout]    |
[INFO] [stdout] 19 |             let _: Result<Output, _> = cmd.output().map_err(|e| {
[INFO] [stdout]    |                  +++++++++++++++++++
[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 E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rs_clean` (bin "rs_clean" test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "968b8e500a8bdf9efbc530cd86e52c3eea05cb2f9c74fc100971ee7eb6b42b31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "968b8e500a8bdf9efbc530cd86e52c3eea05cb2f9c74fc100971ee7eb6b42b31", kill_on_drop: false }`
[INFO] [stdout] 968b8e500a8bdf9efbc530cd86e52c3eea05cb2f9c74fc100971ee7eb6b42b31