[INFO] fetching crate singletonset 0.1.2...
[INFO] testing singletonset-0.1.2 against 1.91.0 for beta-1.92-2
[INFO] extracting crate singletonset 0.1.2 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate singletonset 0.1.2
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate singletonset 0.1.2
[INFO] tweaked toml for crates.io crate singletonset 0.1.2 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate singletonset 0.1.2 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate singletonset 0.1.2 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" "+1.91.0" "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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3581ad9c490ac3dc1b0bbf891eac9765074a9770e7f9767dc8ab50c853e29214
[INFO] running `Command { std: "docker" "start" "-a" "3581ad9c490ac3dc1b0bbf891eac9765074a9770e7f9767dc8ab50c853e29214", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3581ad9c490ac3dc1b0bbf891eac9765074a9770e7f9767dc8ab50c853e29214", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3581ad9c490ac3dc1b0bbf891eac9765074a9770e7f9767dc8ab50c853e29214", kill_on_drop: false }`
[INFO] [stdout] 3581ad9c490ac3dc1b0bbf891eac9765074a9770e7f9767dc8ab50c853e29214
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4ecf0637e1938aa74b5ce980e1bc4721d09cd365874694f11f7600f8fefb25c5
[INFO] running `Command { std: "docker" "start" "-a" "4ecf0637e1938aa74b5ce980e1bc4721d09cd365874694f11f7600f8fefb25c5", kill_on_drop: false }`
[INFO] [stderr]    Compiling hashbrown v0.15.2
[INFO] [stderr]    Compiling indexmap v2.7.0
[INFO] [stderr]    Compiling singletonset v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.10s
[INFO] running `Command { std: "docker" "inspect" "4ecf0637e1938aa74b5ce980e1bc4721d09cd365874694f11f7600f8fefb25c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ecf0637e1938aa74b5ce980e1bc4721d09cd365874694f11f7600f8fefb25c5", kill_on_drop: false }`
[INFO] [stdout] 4ecf0637e1938aa74b5ce980e1bc4721d09cd365874694f11f7600f8fefb25c5
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9bdf299d6316da84fe9ec3909ded20a50633ecede2c853a0c7d97fb873e43df4
[INFO] running `Command { std: "docker" "start" "-a" "9bdf299d6316da84fe9ec3909ded20a50633ecede2c853a0c7d97fb873e43df4", kill_on_drop: false }`
[INFO] [stderr]    Compiling singletonset v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.99s
[INFO] running `Command { std: "docker" "inspect" "9bdf299d6316da84fe9ec3909ded20a50633ecede2c853a0c7d97fb873e43df4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9bdf299d6316da84fe9ec3909ded20a50633ecede2c853a0c7d97fb873e43df4", kill_on_drop: false }`
[INFO] [stdout] 9bdf299d6316da84fe9ec3909ded20a50633ecede2c853a0c7d97fb873e43df4
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7b5e3899eb8bdca930b89d51cce1efbdf5f0378cb702124d83a86337d22ef186
[INFO] running `Command { std: "docker" "start" "-a" "7b5e3899eb8bdca930b89d51cce1efbdf5f0378cb702124d83a86337d22ef186", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/singletonset-6f2f5ac5bc204211)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test tests::singletonset_can_be_iterated ... ok
[INFO] [stdout] test tests::singletonset_works_without_default ... ok
[INFO] [stdout] test tests::singletonset_works_with_custom_defaults ... ok
[INFO] [stdout] test tests::test_singletonset_retains_last_element_of_type ... ok
[INFO] [stdout] test tests::test_singletonset_mutations ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests singletonset
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/lib.rs - SingletonSet::new (line 29) ... ok
[INFO] [stdout] test src/lib.rs - SingletonSet::with_capacity (line 47) ... ok
[INFO] [stdout] test src/lib.rs - (line 61) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.81s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7b5e3899eb8bdca930b89d51cce1efbdf5f0378cb702124d83a86337d22ef186", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b5e3899eb8bdca930b89d51cce1efbdf5f0378cb702124d83a86337d22ef186", kill_on_drop: false }`
[INFO] [stdout] 7b5e3899eb8bdca930b89d51cce1efbdf5f0378cb702124d83a86337d22ef186