[INFO] fetching crate step-dict 0.1.0...
[INFO] testing step-dict-0.1.0 against master#caccb4d0368bd918ef6668af8e13834d07040417 for pr-146098-1
[INFO] extracting crate step-dict 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate step-dict 0.1.0
[INFO] finished tweaking crates.io crate step-dict 0.1.0
[INFO] tweaked toml for crates.io crate step-dict 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate step-dict 0.1.0 on toolchain caccb4d0368bd918ef6668af8e13834d07040417
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "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" "+caccb4d0368bd918ef6668af8e13834d07040417" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 09d47d17f1d42f515ef225826dbcecaf7d0d14b5664e4105c408052dff3dd0c9
[INFO] running `Command { std: "docker" "start" "-a" "09d47d17f1d42f515ef225826dbcecaf7d0d14b5664e4105c408052dff3dd0c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "09d47d17f1d42f515ef225826dbcecaf7d0d14b5664e4105c408052dff3dd0c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09d47d17f1d42f515ef225826dbcecaf7d0d14b5664e4105c408052dff3dd0c9", kill_on_drop: false }`
[INFO] [stdout] 09d47d17f1d42f515ef225826dbcecaf7d0d14b5664e4105c408052dff3dd0c9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f6fa1be73fd883cd5a676c4a4ce2fb372e97c341d4e19f780b3359f5d92e9d86
[INFO] running `Command { std: "docker" "start" "-a" "f6fa1be73fd883cd5a676c4a4ce2fb372e97c341d4e19f780b3359f5d92e9d86", kill_on_drop: false }`
[INFO] [stderr]    Compiling step-dict v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0053]: method `steps_between` has an incompatible type for trait
[INFO] [stdout]   --> src/lib.rs:44:65
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn steps_between(&Self(start): &Self, &Self(end): &Self) -> Option<usize> {
[INFO] [stdout]    |                                                                 ^^^^^^^^^^^^^ expected `(usize, Option<usize>)`, found `Option<usize>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected signature `fn(&Word<'_>, &Word<'_>) -> (usize, Option<usize>)`
[INFO] [stdout]               found signature `fn(&Word<'_>, &Word<'_>) -> Option<usize>`
[INFO] [stdout] help: change the output type to match the trait
[INFO] [stdout]    |
[INFO] [stdout] 44 -     fn steps_between(&Self(start): &Self, &Self(end): &Self) -> Option<usize> {
[INFO] [stdout] 44 +     fn steps_between(&Self(start): &Self, &Self(end): &Self) -> (usize, Option<usize>) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0053`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `step-dict` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "f6fa1be73fd883cd5a676c4a4ce2fb372e97c341d4e19f780b3359f5d92e9d86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6fa1be73fd883cd5a676c4a4ce2fb372e97c341d4e19f780b3359f5d92e9d86", kill_on_drop: false }`
[INFO] [stdout] f6fa1be73fd883cd5a676c4a4ce2fb372e97c341d4e19f780b3359f5d92e9d86