[INFO] fetching crate slice-ext 0.1.4...
[INFO] checking slice-ext-0.1.4 against try#d4bd6c543d189dee2fa075d0b37e31ddc7d111a4 for pr-106073
[INFO] extracting crate slice-ext 0.1.4 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate slice-ext 0.1.4 on toolchain d4bd6c543d189dee2fa075d0b37e31ddc7d111a4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d4bd6c543d189dee2fa075d0b37e31ddc7d111a4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate slice-ext 0.1.4
[INFO] finished tweaking crates.io crate slice-ext 0.1.4
[INFO] tweaked toml for crates.io crate slice-ext 0.1.4 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d4bd6c543d189dee2fa075d0b37e31ddc7d111a4" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d4bd6c543d189dee2fa075d0b37e31ddc7d111a4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:9db6adea6fe108e8475f2314ed6ea91319efc655499b550640da2809d69ffe6a" "/opt/rustwide/cargo-home/bin/cargo" "+d4bd6c543d189dee2fa075d0b37e31ddc7d111a4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c9a76a57e09f4725c78bd294f986ff2eebb22265ca1974762ad014f90babf4f3
[INFO] running `Command { std: "docker" "start" "-a" "c9a76a57e09f4725c78bd294f986ff2eebb22265ca1974762ad014f90babf4f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c9a76a57e09f4725c78bd294f986ff2eebb22265ca1974762ad014f90babf4f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9a76a57e09f4725c78bd294f986ff2eebb22265ca1974762ad014f90babf4f3", kill_on_drop: false }`
[INFO] [stdout] c9a76a57e09f4725c78bd294f986ff2eebb22265ca1974762ad014f90babf4f3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:9db6adea6fe108e8475f2314ed6ea91319efc655499b550640da2809d69ffe6a" "/opt/rustwide/cargo-home/bin/cargo" "+d4bd6c543d189dee2fa075d0b37e31ddc7d111a4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9d6ea8e3e0d8675a0f0686da937f2b48c4e01194ad9127ec9af5d47a69be7be7
[INFO] running `Command { std: "docker" "start" "-a" "9d6ea8e3e0d8675a0f0686da937f2b48c4e01194ad9127ec9af5d47a69be7be7", kill_on_drop: false }`
[INFO] [stderr]     Checking slice-ext v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/lib.rs:178:44
[INFO] [stdout]     |
[INFO] [stdout] 178 |         let mut s = (&a[..]).split_before(|v| *v == 2 || *v == 5);
[INFO] [stdout]     |                                            ^  -- type must be known at this point
[INFO] [stdout]     |
[INFO] [stdout] help: consider giving this closure parameter an explicit type
[INFO] [stdout]     |
[INFO] [stdout] 178 |         let mut s = (&a[..]).split_before(|v: /* Type */| *v == 2 || *v == 5);
[INFO] [stdout]     |                                             ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 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 `slice-ext` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "9d6ea8e3e0d8675a0f0686da937f2b48c4e01194ad9127ec9af5d47a69be7be7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d6ea8e3e0d8675a0f0686da937f2b48c4e01194ad9127ec9af5d47a69be7be7", kill_on_drop: false }`
[INFO] [stdout] 9d6ea8e3e0d8675a0f0686da937f2b48c4e01194ad9127ec9af5d47a69be7be7