[INFO] crate guard_let 0.1.2 is already in cache
[INFO] testing guard_let-0.1.2 against try#41997647ba6a77908f6ef64401414feb00bccf16 for pr-71274
[INFO] extracting crate guard_let 0.1.2 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate guard_let 0.1.2 on toolchain 41997647ba6a77908f6ef64401414feb00bccf16
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "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-1/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+41997647ba6a77908f6ef64401414feb00bccf16" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6943c03cef2571e9f9952f8a9c657c4f416b30aa6834041f7e5841017e369c16
[INFO] running `"docker" "start" "-a" "6943c03cef2571e9f9952f8a9c657c4f416b30aa6834041f7e5841017e369c16"`
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling pmutil v0.5.3
[INFO] [stderr]    Compiling guard_let v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.77s
[INFO] running `"docker" "inspect" "6943c03cef2571e9f9952f8a9c657c4f416b30aa6834041f7e5841017e369c16"`
[INFO] running `"docker" "rm" "-f" "6943c03cef2571e9f9952f8a9c657c4f416b30aa6834041f7e5841017e369c16"`
[INFO] [stdout] 6943c03cef2571e9f9952f8a9c657c4f416b30aa6834041f7e5841017e369c16
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+41997647ba6a77908f6ef64401414feb00bccf16" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5afcdb04cc0988eb75f061aa1cdd66505676b91cbdd51b7b59172957bedb93e0
[INFO] running `"docker" "start" "-a" "5afcdb04cc0988eb75f061aa1cdd66505676b91cbdd51b7b59172957bedb93e0"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling 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]    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[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]    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[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] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "5afcdb04cc0988eb75f061aa1cdd66505676b91cbdd51b7b59172957bedb93e0"`
[INFO] running `"docker" "rm" "-f" "5afcdb04cc0988eb75f061aa1cdd66505676b91cbdd51b7b59172957bedb93e0"`
[INFO] [stdout] 5afcdb04cc0988eb75f061aa1cdd66505676b91cbdd51b7b59172957bedb93e0