[INFO] fetching crate empty-option 0.1.1...
[INFO] testing empty-option-0.1.1 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate empty-option 0.1.1 into /workspace/builds/worker-75/source
[INFO] validating manifest of crates.io crate empty-option 0.1.1 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate empty-option 0.1.1
[INFO] finished tweaking crates.io crate empty-option 0.1.1
[INFO] tweaked toml for crates.io crate empty-option 0.1.1 written to /workspace/builds/worker-75/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ea5c22f6e34d1f18c02da328a375230c3303d7bd5fc58093a4fa80635d784a03
[INFO] running `Command { std: "docker" "start" "-a" "ea5c22f6e34d1f18c02da328a375230c3303d7bd5fc58093a4fa80635d784a03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ea5c22f6e34d1f18c02da328a375230c3303d7bd5fc58093a4fa80635d784a03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea5c22f6e34d1f18c02da328a375230c3303d7bd5fc58093a4fa80635d784a03", kill_on_drop: false }`
[INFO] [stdout] ea5c22f6e34d1f18c02da328a375230c3303d7bd5fc58093a4fa80635d784a03
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 55d192662ef96e389af186a7f91084b096fc08d5fdb070b29884ce2102a99416
[INFO] running `Command { std: "docker" "start" "-a" "55d192662ef96e389af186a7f91084b096fc08d5fdb070b29884ce2102a99416", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling empty-option v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "55d192662ef96e389af186a7f91084b096fc08d5fdb070b29884ce2102a99416", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "55d192662ef96e389af186a7f91084b096fc08d5fdb070b29884ce2102a99416", kill_on_drop: false }`
[INFO] [stdout] 55d192662ef96e389af186a7f91084b096fc08d5fdb070b29884ce2102a99416
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2bacf39889cf525487e91ad538edcd577b8e5f9227469f8b84436288ccd2deb2
[INFO] running `Command { std: "docker" "start" "-a" "2bacf39889cf525487e91ad538edcd577b8e5f9227469f8b84436288ccd2deb2", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling empty-option v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `Command { std: "docker" "inspect" "2bacf39889cf525487e91ad538edcd577b8e5f9227469f8b84436288ccd2deb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2bacf39889cf525487e91ad538edcd577b8e5f9227469f8b84436288ccd2deb2", kill_on_drop: false }`
[INFO] [stdout] 2bacf39889cf525487e91ad538edcd577b8e5f9227469f8b84436288ccd2deb2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] bc9f1a3f8d5347c7c59e444acac1c67613c8d294443742ce98cd1d2bdabccff5
[INFO] running `Command { std: "docker" "start" "-a" "bc9f1a3f8d5347c7c59e444acac1c67613c8d294443742ce98cd1d2bdabccff5", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/empty_option-730740c2d23b27fa)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test tests::catch_and_release ... ok
[INFO] [stdout] test tests::mut_and_release ... ok
[INFO] [stdout] test tests::mut_and_keep ... ok
[INFO] [stdout] test tests::catch_and_keep - should panic ... ok
[INFO] [stdout] test tests::catch_from_none - should panic ... ok
[INFO] [stdout] test tests::mut_from_none - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests empty-option
[INFO] [stdout] 
[INFO] [stdout] running 12 tests
[INFO] [stdout] test src/lib.rs - (line 99) ... FAILED
[INFO] [stdout] test src/lib.rs - OptionGuard (line 168) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 46) ... FAILED
[INFO] [stdout] test src/lib.rs - OptionGuardMut (line 246) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 81) ... ok
[INFO] [stdout] test src/lib.rs - OptionGuardMut (line 230) ... ok
[INFO] [stdout] test src/lib.rs - OptionGuardMut (line 213) ... ok
[INFO] [stdout] test src/lib.rs - (line 34) ... ok
[INFO] [stdout] test src/lib.rs - OptionGuard (line 135) ... ok
[INFO] [stdout] test src/lib.rs - (line 63) ... ok
[INFO] [stdout] test src/lib.rs - OptionGuard (line 157) ... ok
[INFO] [stdout] test src/lib.rs - (line 11) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 99) stdout ----
[INFO] [stdout] error[E0599]: no method named `steal_mut` found for enum `Option` in the current scope
[INFO] [stdout]  --> src/lib.rs:103:7
[INFO] [stdout]   |
[INFO] [stdout] 6 | thing.steal_mut();
[INFO] [stdout]   |       ^^^^^^^^^ help: there is an associated function with a similar name: `iter_mut`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - OptionGuard (line 168) stdout ----
[INFO] [stdout] error[E0599]: no method named `steal` found for enum `Option` in the current scope
[INFO] [stdout]  --> src/lib.rs:172:24
[INFO] [stdout]   |
[INFO] [stdout] 6 | let (guard, _) = thing.steal();
[INFO] [stdout]   |                        ^^^^^ method not found in `Option<_>`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - (line 46) stdout ----
[INFO] [stdout] error[E0599]: no method named `steal` found for enum `Option` in the current scope
[INFO] [stdout]  --> src/lib.rs:50:24
[INFO] [stdout]   |
[INFO] [stdout] 6 | let (guard, _) = thing.steal();
[INFO] [stdout]   |                        ^^^^^ method not found in `Option<_>`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - OptionGuardMut (line 246) stdout ----
[INFO] [stdout] error[E0599]: no method named `steal_mut` found for enum `Option` in the current scope
[INFO] [stdout]  --> src/lib.rs:250:7
[INFO] [stdout]   |
[INFO] [stdout] 6 | thing.steal_mut();
[INFO] [stdout]   |       ^^^^^^^^^ help: there is an associated function with a similar name: `iter_mut`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 46)
[INFO] [stdout]     src/lib.rs - (line 99)
[INFO] [stdout]     src/lib.rs - OptionGuard (line 168)
[INFO] [stdout]     src/lib.rs - OptionGuardMut (line 246)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 8 passed; 4 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.45s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "bc9f1a3f8d5347c7c59e444acac1c67613c8d294443742ce98cd1d2bdabccff5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc9f1a3f8d5347c7c59e444acac1c67613c8d294443742ce98cd1d2bdabccff5", kill_on_drop: false }`
[INFO] [stdout] bc9f1a3f8d5347c7c59e444acac1c67613c8d294443742ce98cd1d2bdabccff5