[INFO] crate optimath 0.3.0 is already in cache
[INFO] checking optimath-0.3.0 against try#8a5e87609850cdd8679aada01eb0f3062f254ca8 for pr-71140
[INFO] extracting crate optimath 0.3.0 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate optimath 0.3.0 on toolchain 8a5e87609850cdd8679aada01eb0f3062f254ca8
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8a5e87609850cdd8679aada01eb0f3062f254ca8" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate optimath 0.3.0
[INFO] finished tweaking crates.io crate optimath 0.3.0
[INFO] tweaked toml for crates.io crate optimath 0.3.0 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8a5e87609850cdd8679aada01eb0f3062f254ca8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8a5e87609850cdd8679aada01eb0f3062f254ca8" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+8a5e87609850cdd8679aada01eb0f3062f254ca8" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] a752d3738f9a6c31fb8faf824d5c0af46f639cf025f3d8245e1da598f5c6546d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "a752d3738f9a6c31fb8faf824d5c0af46f639cf025f3d8245e1da598f5c6546d"`
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]    Compiling ryu v1.0.3
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]     Checking oorandom v11.1.0
[INFO] [stderr]    Compiling memoffset v0.5.4
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking num_cpus v1.12.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking criterion-plot v0.4.1
[INFO] [stderr]     Checking regex v1.3.6
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]     Checking plotters v0.2.12
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking serde_json v1.0.51
[INFO] [stderr]     Checking bstr v0.2.12
[INFO] [stderr]     Checking bincode v1.2.1
[INFO] [stderr]     Checking optimath v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: `default` is only allowed on items in `impl` definitions
[INFO] [stderr]   --> src/advanced.rs:20:2
[INFO] [stderr]    |
[INFO] [stderr] 20 |       pub default fn matrix_multiply<const O: usize>(
[INFO] [stderr]    |       ^   ------- `default` because of this
[INFO] [stderr]    |  _____|
[INFO] [stderr]    | |
[INFO] [stderr] 21 | |         &'a self,
[INFO] [stderr] 22 | |         other: &'b Matrix<T, N, O>,
[INFO] [stderr] 23 | |     ) -> Matrix<T, M, O> {
[INFO] [stderr] ...  |
[INFO] [stderr] 40 | |         output
[INFO] [stderr] 41 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] error: `default` is only allowed on items in `impl` definitions
[INFO] [stderr]   --> src/advanced.rs:49:2
[INFO] [stderr]    |
[INFO] [stderr] 49 |     pub default fn dot(self, other: &'b Vector<T, M>) -> T { (self * other).into_iter().sum() }
[INFO] [stderr]    |     ^^^^-------^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         `default` because of this
[INFO] [stderr] 
[INFO] [stderr] error: `default` is only allowed on items in `impl` definitions
[INFO] [stderr]   --> src/advanced.rs:57:2
[INFO] [stderr]    |
[INFO] [stderr] 57 |     pub default fn dot(&'a self, other: &'b Vector<T, M>) -> T { (self * other).into_iter().sum() }
[INFO] [stderr]    |     ^^^^-------^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         `default` because of this
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `optimath`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "a752d3738f9a6c31fb8faf824d5c0af46f639cf025f3d8245e1da598f5c6546d"`
[INFO] running `"docker" "rm" "-f" "a752d3738f9a6c31fb8faf824d5c0af46f639cf025f3d8245e1da598f5c6546d"`
[INFO] [stdout] a752d3738f9a6c31fb8faf824d5c0af46f639cf025f3d8245e1da598f5c6546d