[INFO] fetching crate error-code 3.0.0...
[INFO] checking error-code-3.0.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate error-code 3.0.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate error-code 3.0.0 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 crates.io crate error-code 3.0.0
[INFO] finished tweaking crates.io crate error-code 3.0.0
[INFO] tweaked toml for crates.io crate error-code 3.0.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 7dbfa99fdc7f109f2753a9304d1c7ff26b9ad91eb08322291b62cdc9dca88beb
[INFO] running `Command { std: "docker" "start" "-a" "7dbfa99fdc7f109f2753a9304d1c7ff26b9ad91eb08322291b62cdc9dca88beb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7dbfa99fdc7f109f2753a9304d1c7ff26b9ad91eb08322291b62cdc9dca88beb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7dbfa99fdc7f109f2753a9304d1c7ff26b9ad91eb08322291b62cdc9dca88beb", kill_on_drop: false }`
[INFO] [stdout] 7dbfa99fdc7f109f2753a9304d1c7ff26b9ad91eb08322291b62cdc9dca88beb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] e724412137c615a19095dba3fc4e28235e182ea0aa7d4a8379dcecb8bf34adcf
[INFO] running `Command { std: "docker" "start" "-a" "e724412137c615a19095dba3fc4e28235e182ea0aa7d4a8379dcecb8bf34adcf", kill_on_drop: false }`
[INFO] [stderr]     Checking error-code v3.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "e724412137c615a19095dba3fc4e28235e182ea0aa7d4a8379dcecb8bf34adcf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e724412137c615a19095dba3fc4e28235e182ea0aa7d4a8379dcecb8bf34adcf", kill_on_drop: false }`
[INFO] [stdout] e724412137c615a19095dba3fc4e28235e182ea0aa7d4a8379dcecb8bf34adcf
[INFO] checking error-code-3.0.0 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate error-code 3.0.0 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate error-code 3.0.0 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 crates.io crate error-code 3.0.0
[INFO] finished tweaking crates.io crate error-code 3.0.0
[INFO] tweaked toml for crates.io crate error-code 3.0.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] f23ae38ac632b69c77ab740a2768bd11ef87a22e708ad45037d3b7d37f3b3d6a
[INFO] running `Command { std: "docker" "start" "-a" "f23ae38ac632b69c77ab740a2768bd11ef87a22e708ad45037d3b7d37f3b3d6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f23ae38ac632b69c77ab740a2768bd11ef87a22e708ad45037d3b7d37f3b3d6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f23ae38ac632b69c77ab740a2768bd11ef87a22e708ad45037d3b7d37f3b3d6a", kill_on_drop: false }`
[INFO] [stdout] f23ae38ac632b69c77ab740a2768bd11ef87a22e708ad45037d3b7d37f3b3d6a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] b6bb20c5d7ed534b9c7b58bf1f32c74d88140575f5de34ddf8d082a2ebfb412a
[INFO] running `Command { std: "docker" "start" "-a" "b6bb20c5d7ed534b9c7b58bf1f32c74d88140575f5de34ddf8d082a2ebfb412a", kill_on_drop: false }`
[INFO] [stderr]     Checking error-code v3.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/posix.rs:131:13
[INFO] [stdout]     |
[INFO] [stdout] 131 | /             match str::from_utf8(err_slice) {
[INFO] [stdout] 132 | |                 Ok(msg) => return msg,
[INFO] [stdout] 133 | |                 Err(_) => return write_message_buf(out, crate::FAIL_ERROR_FORMAT),
[INFO] [stdout] 134 | |             };
[INFO] [stdout]     | |_____________^ cannot infer type
[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] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/posix.rs:131:13
[INFO] [stdout]     |
[INFO] [stdout] 131 | /             match str::from_utf8(err_slice) {
[INFO] [stdout] 132 | |                 Ok(msg) => return msg,
[INFO] [stdout] 133 | |                 Err(_) => return write_message_buf(out, crate::FAIL_ERROR_FORMAT),
[INFO] [stdout] 134 | |             };
[INFO] [stdout]     | |_____________^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `error-code` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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 `error-code` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "b6bb20c5d7ed534b9c7b58bf1f32c74d88140575f5de34ddf8d082a2ebfb412a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6bb20c5d7ed534b9c7b58bf1f32c74d88140575f5de34ddf8d082a2ebfb412a", kill_on_drop: false }`
[INFO] [stdout] b6bb20c5d7ed534b9c7b58bf1f32c74d88140575f5de34ddf8d082a2ebfb412a