[INFO] crate optimath 0.3.0 is already in cache
[INFO] checking optimath-0.3.0 against master#ba72b15666b2491415aec703a02c2364fe5e2790 for pr-71140
[INFO] extracting crate optimath 0.3.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate optimath 0.3.0 on toolchain ba72b15666b2491415aec703a02c2364fe5e2790
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "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-8/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "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" "+ba72b15666b2491415aec703a02c2364fe5e2790" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+ba72b15666b2491415aec703a02c2364fe5e2790" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 6a4e39f0ea8ae399fb9d714b388259377eb5918e25f2f11771fb5df655455b8c
[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" "6a4e39f0ea8ae399fb9d714b388259377eb5918e25f2f11771fb5df655455b8c"`
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking unicode-width v0.1.7
[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 cast v0.2.3
[INFO] [stderr]     Checking plotters v0.2.12
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking criterion-plot v0.4.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking regex v1.3.6
[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]     Checking tinytemplate v1.0.3
[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" "6a4e39f0ea8ae399fb9d714b388259377eb5918e25f2f11771fb5df655455b8c"`
[INFO] running `"docker" "rm" "-f" "6a4e39f0ea8ae399fb9d714b388259377eb5918e25f2f11771fb5df655455b8c"`
[INFO] [stdout] 6a4e39f0ea8ae399fb9d714b388259377eb5918e25f2f11771fb5df655455b8c