[INFO] fetching crate b_error 0.1.0...
[INFO] checking b_error-0.1.0 against master#914adf04af1c1a984707f778da3d04590c03d144 for pr-72331
[INFO] extracting crate b_error 0.1.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate b_error 0.1.0 on toolchain 914adf04af1c1a984707f778da3d04590c03d144
[INFO] running `"/workspace/cargo-home/bin/cargo" "+914adf04af1c1a984707f778da3d04590c03d144" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate b_error 0.1.0
[INFO] finished tweaking crates.io crate b_error 0.1.0
[INFO] tweaked toml for crates.io crate b_error 0.1.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+914adf04af1c1a984707f778da3d04590c03d144" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+914adf04af1c1a984707f778da3d04590c03d144" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+914adf04af1c1a984707f778da3d04590c03d144" "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] e0769becec639f0bdd84d1b3ce272a796981c1464ce50e935230f80207513859
[INFO] running `"docker" "start" "-a" "e0769becec639f0bdd84d1b3ce272a796981c1464ce50e935230f80207513859"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking b_error v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0599]: no method named `c` found for enum `std::result::Result<(), test::TestError>` in the current scope
[INFO] [stderr]    --> error.rs:130:19
[INFO] [stderr]     |
[INFO] [stderr] 130 |         ret_s_t().c("test")?;
[INFO] [stderr]     |                   ^ method not found in `std::result::Result<(), test::TestError>`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `c` found for enum `std::result::Result<(), BError>` in the current scope
[INFO] [stderr]    --> error.rs:131:19
[INFO] [stderr]     |
[INFO] [stderr] 131 |         ret_s_b().c("test")?;
[INFO] [stderr]     |                   ^ method not found in `std::result::Result<(), BError>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0599`.
[INFO] [stderr] error: could not compile `b_error`.
[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" "e0769becec639f0bdd84d1b3ce272a796981c1464ce50e935230f80207513859"`
[INFO] running `"docker" "rm" "-f" "e0769becec639f0bdd84d1b3ce272a796981c1464ce50e935230f80207513859"`
[INFO] [stdout] e0769becec639f0bdd84d1b3ce272a796981c1464ce50e935230f80207513859