[INFO] cloning repository https://github.com/ymgyt/mathground
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ymgyt/mathground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fymgyt%2Fmathground"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fymgyt%2Fmathground'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] af19326e56acad57effd37e63281e9bac724f0bb
[INFO] checking ymgyt/mathground against try#d7b51666469c792a8a3f40849607739bae1e705e for pr-71665
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fymgyt%2Fmathground" "/workspace/builds/worker-8/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ymgyt/mathground on toolchain d7b51666469c792a8a3f40849607739bae1e705e
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d7b51666469c792a8a3f40849607739bae1e705e" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ymgyt/mathground
[INFO] finished tweaking git repo https://github.com/ymgyt/mathground
[INFO] tweaked toml for git repo https://github.com/ymgyt/mathground written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/ymgyt/mathground already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d7b51666469c792a8a3f40849607739bae1e705e" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "+d7b51666469c792a8a3f40849607739bae1e705e" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 23d4c6b5a062a0e8f185203409598f3660ffd3a07f8a147d725044f41c3de67c
[INFO] running `"docker" "start" "-a" "23d4c6b5a062a0e8f185203409598f3660ffd3a07f8a147d725044f41c3de67c"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling anyhow v1.0.28
[INFO] [stderr]     Checking svg v0.7.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.36
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking backtrace v0.3.46
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling failure_derive v0.1.7
[INFO] [stderr]     Checking failure v0.1.7
[INFO] [stderr]     Checking plotlib v0.5.1
[INFO] [stderr]     Checking mathground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: expected `;`, found `keyword `let``
[INFO] [stderr]   --> src/stats/scatter_plot.rs:39:43
[INFO] [stderr]    |
[INFO] [stderr] 39 |             .y_range(y_range.0, y_range.1)
[INFO] [stderr]    |                                           ^ help: add `;` here
[INFO] [stderr] 40 | 
[INFO] [stderr] 41 |         let page = Page::single(&view);
[INFO] [stderr]    |         --- unexpected token
[INFO] [stderr] 
[INFO] [stderr] error: expected `;`, found `keyword `let``
[INFO] [stderr]   --> src/stats/scatter_plot.rs:39:43
[INFO] [stderr]    |
[INFO] [stderr] 39 |             .y_range(y_range.0, y_range.1)
[INFO] [stderr]    |                                           ^ help: add `;` here
[INFO] [stderr] 40 | 
[INFO] [stderr] 41 |         let page = Page::single(&view);
[INFO] [stderr]    |         --- unexpected token
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `mathground`.
[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[E0277]: the trait bound `fn(std::string::String) -> stats::error::StatsError {stats::error::StatsError::Unknown}: std::error::Error` is not satisfied
[INFO] [stderr]   --> src/stats/error.rs:23:27
[INFO] [stderr]    |
[INFO] [stderr] 23 |         require_std_error(Box::new(StatsError::Unknown));
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `std::error::Error` is not implemented for `fn(std::string::String) -> stats::error::StatsError {stats::error::StatsError::Unknown}`
[INFO] [stderr]    |
[INFO] [stderr]    = note: required for the cast to the object type `dyn std::error::Error`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0277`.
[INFO] [stderr] error: could not compile `mathground`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "23d4c6b5a062a0e8f185203409598f3660ffd3a07f8a147d725044f41c3de67c"`
[INFO] running `"docker" "rm" "-f" "23d4c6b5a062a0e8f185203409598f3660ffd3a07f8a147d725044f41c3de67c"`
[INFO] [stdout] 23d4c6b5a062a0e8f185203409598f3660ffd3a07f8a147d725044f41c3de67c