[INFO] fetching crate libremexre 0.1.12...
[INFO] checking libremexre-0.1.12 against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] extracting crate libremexre 0.1.12 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate libremexre 0.1.12 on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libremexre 0.1.12
[INFO] finished tweaking crates.io crate libremexre 0.1.12
[INFO] tweaked toml for crates.io crate libremexre 0.1.12 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 18b09ba3fc4ce759bdce2ba3f81ca63f8a8eca9ef9a9ea7d61bccbdb93d4c37a
[INFO] running `Command { std: "docker" "start" "-a" "18b09ba3fc4ce759bdce2ba3f81ca63f8a8eca9ef9a9ea7d61bccbdb93d4c37a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "18b09ba3fc4ce759bdce2ba3f81ca63f8a8eca9ef9a9ea7d61bccbdb93d4c37a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18b09ba3fc4ce759bdce2ba3f81ca63f8a8eca9ef9a9ea7d61bccbdb93d4c37a", kill_on_drop: false }`
[INFO] [stdout] 18b09ba3fc4ce759bdce2ba3f81ca63f8a8eca9ef9a9ea7d61bccbdb93d4c37a
[INFO] running `Command { std: "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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bb99868394dcfb4bcc714987964a19a3ca43abde61bbe9e6588c2bbb8f56f416
[INFO] running `Command { std: "docker" "start" "-a" "bb99868394dcfb4bcc714987964a19a3ca43abde61bbe9e6588c2bbb8f56f416", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]     Checking antidote v1.0.0
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling derive_more v0.15.0
[INFO] [stderr]     Checking libremexre v0.1.12 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lint `legacy_directory_ownership` has been removed: converted into hard error, see issue #37872 <https://github.com/rust-lang/rust/issues/37872> for more information
[INFO] [stdout]  --> src/lib.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     legacy_directory_ownership,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(renamed_and_removed_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `plugin_as_library` has been removed: plugins have been deprecated and retired
[INFO] [stdout]   --> src/lib.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     plugin_as_library,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `safe_extern_statics` has been removed: converted into hard error, see issue #36247 <https://github.com/rust-lang/rust/issues/36247> for more information
[INFO] [stdout]   --> src/lib.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     safe_extern_statics,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unknown lint: `unions_with_drop_fields`
[INFO] [stdout]   --> src/lib.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     unions_with_drop_fields,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unknown_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `legacy_directory_ownership` has been removed: converted into hard error, see issue #37872 <https://github.com/rust-lang/rust/issues/37872> for more information
[INFO] [stdout]  --> src/lib.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     legacy_directory_ownership,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(renamed_and_removed_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `plugin_as_library` has been removed: plugins have been deprecated and retired
[INFO] [stdout]   --> src/lib.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     plugin_as_library,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `safe_extern_statics` has been removed: converted into hard error, see issue #36247 <https://github.com/rust-lang/rust/issues/36247> for more information
[INFO] [stdout]   --> src/lib.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     safe_extern_statics,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unknown lint: `unions_with_drop_fields`
[INFO] [stdout]   --> src/lib.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     unions_with_drop_fields,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unknown_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.17s
[INFO] running `Command { std: "docker" "inspect" "bb99868394dcfb4bcc714987964a19a3ca43abde61bbe9e6588c2bbb8f56f416", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb99868394dcfb4bcc714987964a19a3ca43abde61bbe9e6588c2bbb8f56f416", kill_on_drop: false }`
[INFO] [stdout] bb99868394dcfb4bcc714987964a19a3ca43abde61bbe9e6588c2bbb8f56f416