[INFO] fetching crate pecos-core 0.1.1...
[INFO] testing pecos-core-0.1.1 against master#562dee4820c458d823175268e41601d4c060588a for pr-154210-2
[INFO] extracting crate pecos-core 0.1.1 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate pecos-core 0.1.1
[INFO] finished tweaking crates.io crate pecos-core 0.1.1
[INFO] tweaked toml for crates.io crate pecos-core 0.1.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate pecos-core 0.1.1 on toolchain 562dee4820c458d823175268e41601d4c060588a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 15 packages to latest compatible versions
[INFO] [stderr]       Adding rand v0.8.6 (available: v0.10.1)
[INFO] [stderr]       Adding rand_chacha v0.3.1 (available: v0.10.0)
[INFO] [stderr]       Adding rand_xoshiro v0.6.0 (available: v0.8.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fef8c1b73ccd287cdb680c6e7c16028c44f34bf87ee13871c5dd4ae701a31d1e
[INFO] running `Command { std: "docker" "start" "-a" "fef8c1b73ccd287cdb680c6e7c16028c44f34bf87ee13871c5dd4ae701a31d1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fef8c1b73ccd287cdb680c6e7c16028c44f34bf87ee13871c5dd4ae701a31d1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fef8c1b73ccd287cdb680c6e7c16028c44f34bf87ee13871c5dd4ae701a31d1e", kill_on_drop: false }`
[INFO] [stdout] fef8c1b73ccd287cdb680c6e7c16028c44f34bf87ee13871c5dd4ae701a31d1e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 025cbe4b83e28f8834a37d99e16f15bf0b3ccdb95d7e3738b3888b88d596027f
[INFO] running `Command { std: "docker" "start" "-a" "025cbe4b83e28f8834a37d99e16f15bf0b3ccdb95d7e3738b3888b88d596027f", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.2.17
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand_xoshiro v0.6.0
[INFO] [stderr]    Compiling rand v0.8.6
[INFO] [stderr]    Compiling pecos-core v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]   --> src/sets/vec_set/set_impl.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     #[must_use]
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, and traits
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/sets/vec_set/set_impl.rs:157:5
[INFO] [stdout]     |
[INFO] [stdout] 157 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, and traits
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.04s
[INFO] running `Command { std: "docker" "inspect" "025cbe4b83e28f8834a37d99e16f15bf0b3ccdb95d7e3738b3888b88d596027f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "025cbe4b83e28f8834a37d99e16f15bf0b3ccdb95d7e3738b3888b88d596027f", kill_on_drop: false }`
[INFO] [stdout] 025cbe4b83e28f8834a37d99e16f15bf0b3ccdb95d7e3738b3888b88d596027f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 247d1f343b2c94179015ac06a6193129fad1efc0d8d48ca9a1a3a939b1c092ee
[INFO] running `Command { std: "docker" "start" "-a" "247d1f343b2c94179015ac06a6193129fad1efc0d8d48ca9a1a3a939b1c092ee", kill_on_drop: false }`
[INFO] [stderr]    Compiling pecos-core v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]   --> src/sets/vec_set/set_impl.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     #[must_use]
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, and traits
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/sets/vec_set/set_impl.rs:157:5
[INFO] [stdout]     |
[INFO] [stdout] 157 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, and traits
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]   --> src/sets/vec_set/set_impl.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     #[must_use]
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, and traits
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]    --> src/sets/vec_set/set_impl.rs:157:5
[INFO] [stdout]     |
[INFO] [stdout] 157 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, and traits
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.62s
[INFO] running `Command { std: "docker" "inspect" "247d1f343b2c94179015ac06a6193129fad1efc0d8d48ca9a1a3a939b1c092ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "247d1f343b2c94179015ac06a6193129fad1efc0d8d48ca9a1a3a939b1c092ee", kill_on_drop: false }`
[INFO] [stdout] 247d1f343b2c94179015ac06a6193129fad1efc0d8d48ca9a1a3a939b1c092ee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5283ad7d325f9b5d6ad6c4647fff863cb90127a48c26e2098824c9f8d6b61af9
[INFO] running `Command { std: "docker" "start" "-a" "5283ad7d325f9b5d6ad6c4647fff863cb90127a48c26e2098824c9f8d6b61af9", kill_on_drop: false }`
[INFO] [stderr] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stderr]   --> src/sets/vec_set/set_impl.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     #[must_use]
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, and traits
[INFO] [stderr]    = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stderr]    --> src/sets/vec_set/set_impl.rs:157:5
[INFO] [stderr]     |
[INFO] [stderr] 157 |     #[must_use]
[INFO] [stderr]     |     ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]     = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, and traits
[INFO] [stderr] 
[INFO] [stderr] warning: `pecos-core` (lib) generated 2 warnings (run `cargo fix --lib -p pecos-core` to apply 2 suggestions)
[INFO] [stderr] warning: `pecos-core` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/pecos_core-5d171ef204269941)
[INFO] [stdout] 
[INFO] [stdout] running 23 tests
[INFO] [stdout] test sets::vec_set::tests::test_bitand_assign ... ok
[INFO] [stdout] test sets::vec_set::tests::test_bitxor_assign ... ok
[INFO] [stdout] test sets::vec_set::tests::test_clear ... ok
[INFO] [stdout] test sets::vec_set::tests::test_difference ... ok
[INFO] [stdout] test sets::vec_set::tests::test_capacity ... ok
[INFO] [stdout] test sets::vec_set::tests::test_intersection ... ok
[INFO] [stdout] test sets::vec_set::tests::test_intersection_update ... ok
[INFO] [stdout] test sets::vec_set::tests::test_remove ... ok
[INFO] [stdout] test sets::vec_set::tests::test_sub_ref ... ok
[INFO] [stdout] test sets::vec_set::tests::test_a_xor_b_sub_c ... ok
[INFO] [stdout] test sets::vec_set::tests::test_insert ... ok
[INFO] [stdout] test sets::vec_set::tests::test_symmetric_difference ... ok
[INFO] [stdout] test sets::vec_set::tests::test_symmetric_difference_item_update ... ok
[INFO] [stdout] test sets::vec_set::tests::test_bitor_assign ... ok
[INFO] [stdout] test sets::vec_set::tests::test_symmetric_difference_update ... ok
[INFO] [stdout] test sets::vec_set::tests::test_new_from ... ok
[INFO] [stdout] test sets::vec_set::tests::test_union_item_update ... ok
[INFO] [stdout] test sets::vec_set::tests::test_new ... ok
[INFO] [stdout] test sets::vec_set::tests::test_a_xor_b_sub_c_glyphs ... ok
[INFO] [stdout] test sets::vec_set::tests::test_new_with_vec ... ok
[INFO] [stdout] test sets::vec_set::tests::test_with_capacity ... ok
[INFO] [stdout] test sets::vec_set::tests::test_union ... ok
[INFO] [stdout] test sets::vec_set::tests::test_bitand_assign_single_element_ref ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 23 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests pecos_core
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5283ad7d325f9b5d6ad6c4647fff863cb90127a48c26e2098824c9f8d6b61af9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5283ad7d325f9b5d6ad6c4647fff863cb90127a48c26e2098824c9f8d6b61af9", kill_on_drop: false }`
[INFO] [stdout] 5283ad7d325f9b5d6ad6c4647fff863cb90127a48c26e2098824c9f8d6b61af9