[INFO] fetching crate parsec-kak 0.2.0...
[INFO] checking parsec-kak-0.2.0 against master#39cb3386ddc6c71657418be28dbb3987eea4aa4b for pr-133536
[INFO] extracting crate parsec-kak 0.2.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate parsec-kak 0.2.0 on toolchain 39cb3386ddc6c71657418be28dbb3987eea4aa4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate parsec-kak 0.2.0
[INFO] finished tweaking crates.io crate parsec-kak 0.2.0
[INFO] tweaked toml for crates.io crate parsec-kak 0.2.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 39 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded str_indices v0.4.4
[INFO] [stderr]   Downloaded any-rope v1.2.5
[INFO] [stderr]   Downloaded ropey v1.6.1
[INFO] [stderr]   Downloaded parsec-core v0.2.0
[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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d3e2fc887ef80108a9da271ca7a15ea844ed1a66650d507991355f3ae8f3c6ae
[INFO] running `Command { std: "docker" "start" "-a" "d3e2fc887ef80108a9da271ca7a15ea844ed1a66650d507991355f3ae8f3c6ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d3e2fc887ef80108a9da271ca7a15ea844ed1a66650d507991355f3ae8f3c6ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3e2fc887ef80108a9da271ca7a15ea844ed1a66650d507991355f3ae8f3c6ae", kill_on_drop: false }`
[INFO] [stdout] d3e2fc887ef80108a9da271ca7a15ea844ed1a66650d507991355f3ae8f3c6ae
[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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0ce84e80cda9ad18474d51dc9e0d28541348c0a2ac1b5823faca1e5c61948862
[INFO] running `Command { std: "docker" "start" "-a" "0ce84e80cda9ad18474d51dc9e0d28541348c0a2ac1b5823faca1e5c61948862", kill_on_drop: false }`
[INFO] [stderr]    Compiling signal-hook v0.3.17
[INFO] [stderr]     Checking signal-hook-registry v1.4.2
[INFO] [stderr]    Compiling rustix v0.38.41
[INFO] [stderr]     Checking str_indices v0.4.4
[INFO] [stderr]     Checking any-rope v1.2.5
[INFO] [stderr]     Checking mio v1.0.3
[INFO] [stderr]     Checking parking_lot_core v0.9.10
[INFO] [stderr]     Checking ropey v1.6.1
[INFO] [stderr]     Checking parking_lot v0.12.3
[INFO] [stderr]     Checking signal-hook-mio v0.2.4
[INFO] [stderr]     Checking crossterm v0.28.1
[INFO] [stderr]     Checking parsec-core v0.2.0
[INFO] [stdout] error[E0053]: method `steps_between` has an incompatible type for trait
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/parsec-core-0.2.0/src/text/tags/mod.rs:760:55
[INFO] [stdout]     |
[INFO] [stdout] 760 |         fn steps_between(start: &Self, end: &Self) -> Option<usize> {
[INFO] [stdout]     |                                                       ^^^^^^^^^^^^^ expected `(usize, Option<usize>)`, found `Option<usize>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected signature `fn(&Marker, &Marker) -> (usize, Option<usize>)`
[INFO] [stdout]                found signature `fn(&Marker, &Marker) -> Option<usize>`
[INFO] [stdout] help: change the output type to match the trait
[INFO] [stdout]     |
[INFO] [stdout] 760 |         fn steps_between(start: &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 `parsec-core` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "0ce84e80cda9ad18474d51dc9e0d28541348c0a2ac1b5823faca1e5c61948862", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ce84e80cda9ad18474d51dc9e0d28541348c0a2ac1b5823faca1e5c61948862", kill_on_drop: false }`
[INFO] [stdout] 0ce84e80cda9ad18474d51dc9e0d28541348c0a2ac1b5823faca1e5c61948862
