[INFO] fetching crate soak 0.2.0...
[INFO] testing soak-0.2.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate soak 0.2.0 into /workspace/builds/worker-38/source
[INFO] validating manifest of crates.io crate soak 0.2.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate soak 0.2.0
[INFO] finished tweaking crates.io crate soak 0.2.0
[INFO] tweaked toml for crates.io crate soak 0.2.0 written to /workspace/builds/worker-38/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e6a4b3b5c29c242c7aff582f767d0a706118c5d8f0a7858bba8b2c7914f69172
[INFO] running `Command { std: "docker" "start" "-a" "e6a4b3b5c29c242c7aff582f767d0a706118c5d8f0a7858bba8b2c7914f69172", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e6a4b3b5c29c242c7aff582f767d0a706118c5d8f0a7858bba8b2c7914f69172", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6a4b3b5c29c242c7aff582f767d0a706118c5d8f0a7858bba8b2c7914f69172", kill_on_drop: false }`
[INFO] [stdout] e6a4b3b5c29c242c7aff582f767d0a706118c5d8f0a7858bba8b2c7914f69172
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e73978680b9a8312ece6edbdee3009f5780c7a29aa31ab05a47ca1046a054390
[INFO] running `Command { std: "docker" "start" "-a" "e73978680b9a8312ece6edbdee3009f5780c7a29aa31ab05a47ca1046a054390", kill_on_drop: false }`
[INFO] [stderr]    Compiling dioptre-derive v0.1.0
[INFO] [stderr]    Compiling soak-derive v0.2.0
[INFO] [stderr]    Compiling dioptre v0.1.0
[INFO] [stderr]    Compiling soak v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `core::mem::replace` that must be used
[INFO] [stdout]    --> src/lib.rs:170:13
[INFO] [stdout]     |
[INFO] [stdout] 170 |             mem::replace(self, table);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.00s
[INFO] running `Command { std: "docker" "inspect" "e73978680b9a8312ece6edbdee3009f5780c7a29aa31ab05a47ca1046a054390", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e73978680b9a8312ece6edbdee3009f5780c7a29aa31ab05a47ca1046a054390", kill_on_drop: false }`
[INFO] [stdout] e73978680b9a8312ece6edbdee3009f5780c7a29aa31ab05a47ca1046a054390
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 54b5ec640c17cdcead398de7b988366d3badd5e491140ca52438c9df66c8239c
[INFO] running `Command { std: "docker" "start" "-a" "54b5ec640c17cdcead398de7b988366d3badd5e491140ca52438c9df66c8239c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling soak v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `core::mem::replace` that must be used
[INFO] [stdout]    --> src/lib.rs:170:13
[INFO] [stdout]     |
[INFO] [stdout] 170 |             mem::replace(self, table);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `core::mem::replace` that must be used
[INFO] [stdout]    --> src/lib.rs:170:13
[INFO] [stdout]     |
[INFO] [stdout] 170 |             mem::replace(self, table);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.72s
[INFO] running `Command { std: "docker" "inspect" "54b5ec640c17cdcead398de7b988366d3badd5e491140ca52438c9df66c8239c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54b5ec640c17cdcead398de7b988366d3badd5e491140ca52438c9df66c8239c", kill_on_drop: false }`
[INFO] [stdout] 54b5ec640c17cdcead398de7b988366d3badd5e491140ca52438c9df66c8239c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ef1f62d69590062fc9b4ef5afe9b714f9ca68ce941b46a1bc8f632a47bc636c1
[INFO] running `Command { std: "docker" "start" "-a" "ef1f62d69590062fc9b4ef5afe9b714f9ca68ce941b46a1bc8f632a47bc636c1", kill_on_drop: false }`
[INFO] [stderr] warning: unused return value of `core::mem::replace` that must be used
[INFO] [stderr]    --> src/lib.rs:170:13
[INFO] [stderr]     |
[INFO] [stderr] 170 |             mem::replace(self, table);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: `soak` (lib) generated 1 warning
[INFO] [stderr] warning: `soak` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/soak-efdb894fae0c36de)
[INFO] [stdout] 
[INFO] [stderr]      Running tests/tests.rs (/opt/rustwide/target/debug/deps/tests-a6d17e555968214c)
[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] [stderr]    Doc-tests soak
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test layout ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 23) - compile ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.08s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ef1f62d69590062fc9b4ef5afe9b714f9ca68ce941b46a1bc8f632a47bc636c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef1f62d69590062fc9b4ef5afe9b714f9ca68ce941b46a1bc8f632a47bc636c1", kill_on_drop: false }`
[INFO] [stdout] ef1f62d69590062fc9b4ef5afe9b714f9ca68ce941b46a1bc8f632a47bc636c1