[INFO] fetching crate mech-syntax 0.2.21...
[INFO] checking mech-syntax-0.2.21 against try#31561a63598a0f21fc74c024747ef1310fdd2eb2 for pr-133536
[INFO] extracting crate mech-syntax 0.2.21 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate mech-syntax 0.2.21 on toolchain 31561a63598a0f21fc74c024747ef1310fdd2eb2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+31561a63598a0f21fc74c024747ef1310fdd2eb2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mech-syntax 0.2.21
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate mech-syntax 0.2.21
[INFO] tweaked toml for crates.io crate mech-syntax 0.2.21 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate crates.io crate mech-syntax 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" "+31561a63598a0f21fc74c024747ef1310fdd2eb2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+31561a63598a0f21fc74c024747ef1310fdd2eb2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 76e4f63bcbdaaaad1f0b53f7451076732c2b6e63a46a06bb89013f9517f618be
[INFO] running `Command { std: "docker" "start" "-a" "76e4f63bcbdaaaad1f0b53f7451076732c2b6e63a46a06bb89013f9517f618be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "76e4f63bcbdaaaad1f0b53f7451076732c2b6e63a46a06bb89013f9517f618be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76e4f63bcbdaaaad1f0b53f7451076732c2b6e63a46a06bb89013f9517f618be", kill_on_drop: false }`
[INFO] [stdout] 76e4f63bcbdaaaad1f0b53f7451076732c2b6e63a46a06bb89013f9517f618be
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+31561a63598a0f21fc74c024747ef1310fdd2eb2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2bfa3f2a2f0234a31958b81fa8033ba9ff2759cb8752117b16848e3fa10e9fa3
[INFO] running `Command { std: "docker" "start" "-a" "2bfa3f2a2f0234a31958b81fa8033ba9ff2759cb8752117b16848e3fa10e9fa3", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.17.0
[INFO] [stderr]    Compiling libm v0.2.11
[INFO] [stderr]    Compiling libc v0.2.164
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking bytemuck v1.19.0
[INFO] [stderr]     Checking cpufeatures v0.2.15
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling matrixmultiply v0.3.9
[INFO] [stderr]     Checking signature v2.2.0
[INFO] [stderr]     Checking unicode-width v0.1.11
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling curve25519-dalek v4.1.3
[INFO] [stderr]    Compiling curve25519-dalek-derive v0.1.1
[INFO] [stderr]     Checking bytecount v0.6.8
[INFO] [stderr]    Compiling serde v1.0.215
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[INFO] [stderr]     Checking safe_arch v0.7.2
[INFO] [stderr]     Checking deranged v0.3.11
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[INFO] [stderr]    Compiling nalgebra-macros v0.2.2
[INFO] [stderr]     Checking minimal-lexical v0.2.1
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[INFO] [stderr]    Compiling serde_derive v1.0.215
[INFO] [stderr]     Checking nom v7.1.3
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[INFO] [stderr]     Checking rand_chacha v0.3.1
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[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking ed25519-dalek v2.1.1
[INFO] [stderr]    Compiling tabled_derive v0.8.0
[INFO] [stderr]     Checking tabled v0.16.0
[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" "2bfa3f2a2f0234a31958b81fa8033ba9ff2759cb8752117b16848e3fa10e9fa3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2bfa3f2a2f0234a31958b81fa8033ba9ff2759cb8752117b16848e3fa10e9fa3", kill_on_drop: false }`
[INFO] [stdout] 2bfa3f2a2f0234a31958b81fa8033ba9ff2759cb8752117b16848e3fa10e9fa3
