[INFO] fetching crate guard_let 0.1.2...
[INFO] checking guard_let-0.1.2 against master#6250d56355d72264ece721e8d0dc95b16a6824b1 for pr-68350
[INFO] extracting crate guard_let 0.1.2 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate guard_let 0.1.2 on toolchain 6250d56355d72264ece721e8d0dc95b16a6824b1
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6250d56355d72264ece721e8d0dc95b16a6824b1" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate guard_let 0.1.2
[INFO] finished tweaking crates.io crate guard_let 0.1.2
[INFO] tweaked toml for crates.io crate guard_let 0.1.2 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6250d56355d72264ece721e8d0dc95b16a6824b1" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6250d56355d72264ece721e8d0dc95b16a6824b1" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+6250d56355d72264ece721e8d0dc95b16a6824b1" "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] 2cd3020ca768459228b99f06daf02defd7a79a42dd88a8a8145ba882e06994e1
[INFO] running `"docker" "start" "-a" "2cd3020ca768459228b99f06daf02defd7a79a42dd88a8a8145ba882e06994e1"`
[INFO] [stderr]     Checking pmutil v0.5.3
[INFO] [stderr]     Checking guard_let v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0277]: `Enum` doesn't implement `std::fmt::Debug`
[INFO] [stderr]   --> tests/usage.rs:21:38
[INFO] [stderr]    |
[INFO] [stderr] 21 |         println!("v is not A: {:?}", v);
[INFO] [stderr]    |                                      ^ `Enum` cannot be formatted using `{:?}`
[INFO] [stderr]    |
[INFO] [stderr]    = help: the trait `std::fmt::Debug` is not implemented for `Enum`
[INFO] [stderr]    = note: add `#[derive(Debug)]` or manually implement `std::fmt::Debug`
[INFO] [stderr]    = note: required by `std::fmt::Debug::fmt`
[INFO] [stderr] 
[INFO] [stderr] error[E0277]: `Enum` doesn't implement `std::fmt::Debug`
[INFO] [stderr]   --> tests/usage.rs:35:38
[INFO] [stderr]    |
[INFO] [stderr] 35 |         println!("v is not C: {:?}", v);
[INFO] [stderr]    |                                      ^ `Enum` cannot be formatted using `{:?}`
[INFO] [stderr]    |
[INFO] [stderr]    = help: the trait `std::fmt::Debug` is not implemented for `Enum`
[INFO] [stderr]    = note: add `#[derive(Debug)]` or manually implement `std::fmt::Debug`
[INFO] [stderr]    = note: required by `std::fmt::Debug::fmt`
[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 `guard_let`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "2cd3020ca768459228b99f06daf02defd7a79a42dd88a8a8145ba882e06994e1"`
[INFO] running `"docker" "rm" "-f" "2cd3020ca768459228b99f06daf02defd7a79a42dd88a8a8145ba882e06994e1"`
[INFO] [stdout] 2cd3020ca768459228b99f06daf02defd7a79a42dd88a8a8145ba882e06994e1