[INFO] crate libeither 0.4.0 is already in cache
[INFO] testing libeither-0.4.0 against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409
[INFO] extracting crate libeither 0.4.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate libeither 0.4.0 on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libeither 0.4.0
[INFO] finished tweaking crates.io crate libeither 0.4.0
[INFO] tweaked toml for crates.io crate libeither 0.4.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 51fa84f0a7ab1940900f76b28e81c4e7bdcc2e7e8a36e054d26338117e3a30ea
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "51fa84f0a7ab1940900f76b28e81c4e7bdcc2e7e8a36e054d26338117e3a30ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "51fa84f0a7ab1940900f76b28e81c4e7bdcc2e7e8a36e054d26338117e3a30ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51fa84f0a7ab1940900f76b28e81c4e7bdcc2e7e8a36e054d26338117e3a30ea", kill_on_drop: false }`
[INFO] [stdout] 51fa84f0a7ab1940900f76b28e81c4e7bdcc2e7e8a36e054d26338117e3a30ea
[INFO] running `Command { std: "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@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 524c175df22c0d4f9f700e6c788b68e154eed92cf71a9a0249441bf28f7611f9
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "524c175df22c0d4f9f700e6c788b68e154eed92cf71a9a0249441bf28f7611f9", kill_on_drop: false }`
[INFO] [stderr]    Compiling libeither v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lint `plugin_as_library` has been removed: `plugins have been deprecated and retired`
[INFO] [stdout]    --> src/lib.rs:104:5
[INFO] [stdout]     |
[INFO] [stdout] 104 |     plugin_as_library,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(renamed_and_removed_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `redundant_semicolon` has been renamed to `redundant_semicolons`
[INFO] [stdout]    --> src/lib.rs:108:5
[INFO] [stdout]     |
[INFO] [stdout] 108 |     redundant_semicolon,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^ help: use the new name: `redundant_semicolons`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]    --> src/either.rs:565:48
[INFO] [stdout]     |
[INFO] [stdout] 565 |         either_else!(&self, ref inner => inner.description(), "Invalid Either (Error")
[INFO] [stdout]     |                                                ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:72:5
[INFO] [stdout]     |
[INFO] [stdout] 72  |     deprecated,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]    --> src/either.rs:565:48
[INFO] [stdout]     |
[INFO] [stdout] 565 |         either_else!(&self, ref inner => inner.description(), "Invalid Either (Error")
[INFO] [stdout]     |                                                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]    --> src/error.rs:210:40
[INFO] [stdout]     |
[INFO] [stdout] 210 |             Self::Io(source) => source.description(),
[INFO] [stdout]     |                                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `libeither`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "524c175df22c0d4f9f700e6c788b68e154eed92cf71a9a0249441bf28f7611f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "524c175df22c0d4f9f700e6c788b68e154eed92cf71a9a0249441bf28f7611f9", kill_on_drop: false }`
[INFO] [stdout] 524c175df22c0d4f9f700e6c788b68e154eed92cf71a9a0249441bf28f7611f9