[INFO] fetching crate contiguous-arena 0.2.0...
[INFO] testing contiguous-arena-0.2.0 against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] extracting crate contiguous-arena 0.2.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate contiguous-arena 0.2.0
[INFO] finished tweaking crates.io crate contiguous-arena 0.2.0
[INFO] tweaked toml for crates.io crate contiguous-arena 0.2.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate contiguous-arena 0.2.0 on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate contiguous-arena 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2e25976728da180cfcc70d69154143b868b1d38740e32b69fc22672a5d4658c9
[INFO] running `Command { std: "docker" "start" "-a" "2e25976728da180cfcc70d69154143b868b1d38740e32b69fc22672a5d4658c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e25976728da180cfcc70d69154143b868b1d38740e32b69fc22672a5d4658c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e25976728da180cfcc70d69154143b868b1d38740e32b69fc22672a5d4658c9", kill_on_drop: false }`
[INFO] [stdout] 2e25976728da180cfcc70d69154143b868b1d38740e32b69fc22672a5d4658c9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 029339740bde275f75770ddcf9749de22b849b582d6d3deef9234cdaff16a9a7
[INFO] running `Command { std: "docker" "start" "-a" "029339740bde275f75770ddcf9749de22b849b582d6d3deef9234cdaff16a9a7", kill_on_drop: false }`
[INFO] [stderr]    Compiling contiguous-arena v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/lib.rs:176:36
[INFO] [stdout]     |
[INFO] [stdout] 176 |             .flat_map(move |&span| (span.start..span.end))
[INFO] [stdout]     |                                    ^                    ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 176 -             .flat_map(move |&span| (span.start..span.end))
[INFO] [stdout] 176 +             .flat_map(move |&span| span.start..span.end)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/lib.rs:202:36
[INFO] [stdout]     |
[INFO] [stdout] 202 |             .flat_map(move |&span| (span.start..span.end))
[INFO] [stdout]     |                                    ^                    ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 202 -             .flat_map(move |&span| (span.start..span.end))
[INFO] [stdout] 202 +             .flat_map(move |&span| span.start..span.end)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.23s
[INFO] running `Command { std: "docker" "inspect" "029339740bde275f75770ddcf9749de22b849b582d6d3deef9234cdaff16a9a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "029339740bde275f75770ddcf9749de22b849b582d6d3deef9234cdaff16a9a7", kill_on_drop: false }`
[INFO] [stdout] 029339740bde275f75770ddcf9749de22b849b582d6d3deef9234cdaff16a9a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8ee87719d4be037cf5e7f5276dd1568eb449f9fe7e60917f0c708d907205c4e7
[INFO] running `Command { std: "docker" "start" "-a" "8ee87719d4be037cf5e7f5276dd1568eb449f9fe7e60917f0c708d907205c4e7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling is-terminal v0.4.16
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/lib.rs:176:36
[INFO] [stdout]     |
[INFO] [stdout] 176 |             .flat_map(move |&span| (span.start..span.end))
[INFO] [stdout]     |                                    ^                    ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 176 -             .flat_map(move |&span| (span.start..span.end))
[INFO] [stdout] 176 +             .flat_map(move |&span| span.start..span.end)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/lib.rs:202:36
[INFO] [stdout]     |
[INFO] [stdout] 202 |             .flat_map(move |&span| (span.start..span.end))
[INFO] [stdout]     |                                    ^                    ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 202 -             .flat_map(move |&span| (span.start..span.end))
[INFO] [stdout] 202 +             .flat_map(move |&span| span.start..span.end)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]    Compiling regex v1.11.1
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling serde_json v1.0.140
[INFO] [stderr]    Compiling ciborium v0.2.2
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling criterion v0.5.1
[INFO] [stderr]    Compiling contiguous-arena v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/lib.rs:176:36
[INFO] [stdout]     |
[INFO] [stdout] 176 |             .flat_map(move |&span| (span.start..span.end))
[INFO] [stdout]     |                                    ^                    ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 176 -             .flat_map(move |&span| (span.start..span.end))
[INFO] [stdout] 176 +             .flat_map(move |&span| span.start..span.end)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/lib.rs:202:36
[INFO] [stdout]     |
[INFO] [stdout] 202 |             .flat_map(move |&span| (span.start..span.end))
[INFO] [stdout]     |                                    ^                    ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 202 -             .flat_map(move |&span| (span.start..span.end))
[INFO] [stdout] 202 +             .flat_map(move |&span| span.start..span.end)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 19.67s
[INFO] running `Command { std: "docker" "inspect" "8ee87719d4be037cf5e7f5276dd1568eb449f9fe7e60917f0c708d907205c4e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ee87719d4be037cf5e7f5276dd1568eb449f9fe7e60917f0c708d907205c4e7", kill_on_drop: false }`
[INFO] [stdout] 8ee87719d4be037cf5e7f5276dd1568eb449f9fe7e60917f0c708d907205c4e7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0b6e1ab63ab6bd55f3e26315b10c43f6d012cbb8498ed8e73c50a74b002eb58c
[INFO] running `Command { std: "docker" "start" "-a" "0b6e1ab63ab6bd55f3e26315b10c43f6d012cbb8498ed8e73c50a74b002eb58c", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around closure body
[INFO] [stderr]    --> src/lib.rs:176:36
[INFO] [stderr]     |
[INFO] [stderr] 176 |             .flat_map(move |&span| (span.start..span.end))
[INFO] [stderr]     |                                    ^                    ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 176 -             .flat_map(move |&span| (span.start..span.end))
[INFO] [stderr] 176 +             .flat_map(move |&span| span.start..span.end)
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around closure body
[INFO] [stderr]    --> src/lib.rs:202:36
[INFO] [stderr]     |
[INFO] [stderr] 202 |             .flat_map(move |&span| (span.start..span.end))
[INFO] [stderr]     |                                    ^                    ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 202 -             .flat_map(move |&span| (span.start..span.end))
[INFO] [stderr] 202 +             .flat_map(move |&span| span.start..span.end)
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `contiguous-arena` (lib) generated 2 warnings (run `cargo fix --lib -p contiguous-arena` to apply 2 suggestions)
[INFO] [stderr] warning: `contiguous-arena` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/contiguous_arena-be73065abe36f9e6)
[INFO] [stdout] 
[INFO] [stdout] running 28 tests
[INFO] [stdout] test tests::append_after_free_all ... ok
[INFO] [stdout] test tests::append_exact_fit ... ok
[INFO] [stdout] test tests::append_larger_than_free ... ok
[INFO] [stdout] test tests::append_non_unique ... ok
[INFO] [stdout] test tests::append_unique ... ok
[INFO] [stdout] test tests::arena_retain_mut ... ok
[INFO] [stdout] test tests::free_and_reuse_partially ... ok
[INFO] [stdout] test tests::fetch_or_append_non_unique ... ok
[INFO] [stdout] test tests::fetch_or_append_unique ... ok
[INFO] [stdout] test tests::drain_arena ... ok
[INFO] [stdout] test tests::handle_ordering ... ok
[INFO] [stdout] test tests::iterate_arena ... ok
[INFO] [stdout] test tests::iterators_live_only ... ok
[INFO] [stdout] test tests::merge_free_spans ... ok
[INFO] [stdout] test tests::test_clear ... ok
[INFO] [stdout] test tests::test_fetch_if ... ok
[INFO] [stdout] test tests::large_counts ... ok
[INFO] [stdout] test tests::test_with_struct ... ok
[INFO] [stdout] test tests::multiple_handles_same_span ... ok
[INFO] [stdout] test tests::test_zero_sized ... ok
[INFO] [stdout] test tests::reuse_spans ... ok
[INFO] [stdout] test tests::test_fetch_if_or_append_custom ... ok
[INFO] [stdout] test tests::get_span_test ... ok
[INFO] [stdout] test tests::free_panic_middle_of_span - should panic ... ok
[INFO] [stdout] test tests::index_panic_freed - should panic ... ok
[INFO] [stdout] test tests::get_span_panic_freed - should panic ... ok
[INFO] [stdout] test tests::index_mut_panic_freed - should panic ... ok
[INFO] [stdout] test tests::fuzz ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 28 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests contiguous_arena
[INFO] [stderr] warning: unnecessary parentheses around closure body
[INFO] [stderr]    --> src/lib.rs:176:36
[INFO] [stderr]     |
[INFO] [stderr] 176 |             .flat_map(move |&span| (span.start..span.end))
[INFO] [stderr]     |                                    ^                    ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 176 -             .flat_map(move |&span| (span.start..span.end))
[INFO] [stderr] 176 +             .flat_map(move |&span| span.start..span.end)
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around closure body
[INFO] [stderr]    --> src/lib.rs:202:36
[INFO] [stderr]     |
[INFO] [stderr] 202 |             .flat_map(move |&span| (span.start..span.end))
[INFO] [stderr]     |                                    ^                    ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 202 -             .flat_map(move |&span| (span.start..span.end))
[INFO] [stderr] 202 +             .flat_map(move |&span| span.start..span.end)
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - (line 51) ... ignored
[INFO] [stdout] test src/lib.rs - (line 21) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 0.29s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0b6e1ab63ab6bd55f3e26315b10c43f6d012cbb8498ed8e73c50a74b002eb58c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b6e1ab63ab6bd55f3e26315b10c43f6d012cbb8498ed8e73c50a74b002eb58c", kill_on_drop: false }`
[INFO] [stdout] 0b6e1ab63ab6bd55f3e26315b10c43f6d012cbb8498ed8e73c50a74b002eb58c