[INFO] fetching crate mech 0.2.21...
[INFO] checking mech-0.2.21 against master#39cb3386ddc6c71657418be28dbb3987eea4aa4b for pr-133536
[INFO] extracting crate mech 0.2.21 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate mech 0.2.21 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 mech 0.2.21
[INFO] finished tweaking crates.io crate mech 0.2.21
[INFO] tweaked toml for crates.io crate mech 0.2.21 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate mech 0.2.21 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" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded papergrid v0.12.0
[INFO] [stderr]   Downloaded tinyrand v0.5.0
[INFO] [stderr]   Downloaded nom-unicode v0.3.0
[INFO] [stderr]   Downloaded tabled_derive v0.8.0
[INFO] [stderr]   Downloaded mech-syntax v0.2.21
[INFO] [stderr]   Downloaded tabled v0.16.0
[INFO] [stderr]   Downloaded mech-core v0.2.21
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 268e69a103cf3c3e16c41f70c4b0b834cf13c96b42a76cf4f236ee3d81b58769
[INFO] running `Command { std: "docker" "start" "-a" "268e69a103cf3c3e16c41f70c4b0b834cf13c96b42a76cf4f236ee3d81b58769", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "268e69a103cf3c3e16c41f70c4b0b834cf13c96b42a76cf4f236ee3d81b58769", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "268e69a103cf3c3e16c41f70c4b0b834cf13c96b42a76cf4f236ee3d81b58769", kill_on_drop: false }`
[INFO] [stdout] 268e69a103cf3c3e16c41f70c4b0b834cf13c96b42a76cf4f236ee3d81b58769
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 1df830c36705328158af40c8442a1c704434566bc1b8747226821e5808b32aec
[INFO] running `Command { std: "docker" "start" "-a" "1df830c36705328158af40c8442a1c704434566bc1b8747226821e5808b32aec", kill_on_drop: false }`
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[INFO] [stderr]    Compiling serde_derive v1.0.215
[INFO] [stderr]    Compiling tabled_derive v0.8.0
[INFO] [stderr]    Compiling mech v0.2.21 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking tabled v0.16.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking ed25519-dalek v2.1.1
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[INFO] [stderr]     Checking nalgebra v0.33.2
[INFO] [stderr]     Checking mech-core v0.2.21
[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/mech-core-0.2.21/src/types.rs:116:49
[INFO] [stdout]     |
[INFO] [stdout] 116 |   fn steps_between(start: &Self, end: &Self) -> Option<usize> {
[INFO] [stdout]     |                                                 ^^^^^^^^^^^^^ expected `(usize, std::option::Option<usize>)`, found `std::option::Option<usize>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected signature `fn(&types::F64, &types::F64) -> (usize, std::option::Option<usize>)`
[INFO] [stdout]                found signature `fn(&types::F64, &types::F64) -> std::option::Option<usize>`
[INFO] [stdout] help: change the output type to match the trait
[INFO] [stdout]     |
[INFO] [stdout] 116 |   fn steps_between(start: &Self, end: &Self) -> (usize, std::option::Option<usize>) {
[INFO] [stdout]     |                                                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[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/mech-core-0.2.21/src/types.rs:229:49
[INFO] [stdout]     |
[INFO] [stdout] 229 |   fn steps_between(start: &Self, end: &Self) -> Option<usize> {
[INFO] [stdout]     |                                                 ^^^^^^^^^^^^^ expected `(usize, std::option::Option<usize>)`, found `std::option::Option<usize>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected signature `fn(&types::F32, &types::F32) -> (usize, std::option::Option<usize>)`
[INFO] [stdout]                found signature `fn(&types::F32, &types::F32) -> std::option::Option<usize>`
[INFO] [stdout] help: change the output type to match the trait
[INFO] [stdout]     |
[INFO] [stdout] 229 |   fn steps_between(start: &Self, end: &Self) -> (usize, std::option::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 `mech-core` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "1df830c36705328158af40c8442a1c704434566bc1b8747226821e5808b32aec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1df830c36705328158af40c8442a1c704434566bc1b8747226821e5808b32aec", kill_on_drop: false }`
[INFO] [stdout] 1df830c36705328158af40c8442a1c704434566bc1b8747226821e5808b32aec
