[INFO] fetching crate markings 0.4.0...
[INFO] testing markings-0.4.0 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate markings 0.4.0 into /workspace/builds/worker-27/source
[INFO] validating manifest of crates.io crate markings 0.4.0 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 markings 0.4.0
[INFO] finished tweaking crates.io crate markings 0.4.0
[INFO] tweaked toml for crates.io crate markings 0.4.0 written to /workspace/builds/worker-27/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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] b5a2dad79d22cf3385a7911a67604ff39f83035a6b289b7170a2ad7cc10ff778
[INFO] running `Command { std: "docker" "start" "-a" "b5a2dad79d22cf3385a7911a67604ff39f83035a6b289b7170a2ad7cc10ff778", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b5a2dad79d22cf3385a7911a67604ff39f83035a6b289b7170a2ad7cc10ff778", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5a2dad79d22cf3385a7911a67604ff39f83035a6b289b7170a2ad7cc10ff778", kill_on_drop: false }`
[INFO] [stdout] b5a2dad79d22cf3385a7911a67604ff39f83035a6b289b7170a2ad7cc10ff778
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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] 67a07900c6ee437f34206112fbd107e02aedb669e232eed7361d77c5f2eb28a0
[INFO] running `Command { std: "docker" "start" "-a" "67a07900c6ee437f34206112fbd107e02aedb669e232eed7361d77c5f2eb28a0", kill_on_drop: false }`
[INFO] [stderr]    Compiling markings v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/lib.rs:185:21
[INFO] [stdout]     |
[INFO] [stdout] 185 |                     std::mem::replace(&mut self.data, s);
[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 0.98s
[INFO] running `Command { std: "docker" "inspect" "67a07900c6ee437f34206112fbd107e02aedb669e232eed7361d77c5f2eb28a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67a07900c6ee437f34206112fbd107e02aedb669e232eed7361d77c5f2eb28a0", kill_on_drop: false }`
[INFO] [stdout] 67a07900c6ee437f34206112fbd107e02aedb669e232eed7361d77c5f2eb28a0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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] 3781016e124921de7367ea214fb01a8ccda7403799408366afe786087397d137
[INFO] running `Command { std: "docker" "start" "-a" "3781016e124921de7367ea214fb01a8ccda7403799408366afe786087397d137", kill_on_drop: false }`
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/lib.rs:185:21
[INFO] [stdout]     |
[INFO] [stdout] 185 |                     std::mem::replace(&mut self.data, s);
[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] [stderr]    Compiling markings v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/lib.rs:185:21
[INFO] [stdout]     |
[INFO] [stdout] 185 |                     std::mem::replace(&mut self.data, s);
[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 1.63s
[INFO] running `Command { std: "docker" "inspect" "3781016e124921de7367ea214fb01a8ccda7403799408366afe786087397d137", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3781016e124921de7367ea214fb01a8ccda7403799408366afe786087397d137", kill_on_drop: false }`
[INFO] [stdout] 3781016e124921de7367ea214fb01a8ccda7403799408366afe786087397d137
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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] 1ef12c6587710db5dc108ecbd5b9da0fb4546a7d5822ebf34ec0c98e3f1b2359
[INFO] running `Command { std: "docker" "start" "-a" "1ef12c6587710db5dc108ecbd5b9da0fb4546a7d5822ebf34ec0c98e3f1b2359", kill_on_drop: false }`
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]    --> src/lib.rs:185:21
[INFO] [stderr]     |
[INFO] [stderr] 185 |                     std::mem::replace(&mut self.data, s);
[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: `markings` (lib) generated 1 warning
[INFO] [stderr] warning: `markings` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/markings-e1733c8f51e15900)
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test tests::basic ... ok
[INFO] [stdout] test tests::duplicate_key ... ok
[INFO] [stdout] test tests::duplicate_keys ... ok
[INFO] [stdout] test tests::duplicates ... ok
[INFO] [stdout] test tests::args_owned ... ok
[INFO] [stdout] test tests::empty_template ... ok
[INFO] [stdout] test tests::empty_template_replace ... ok
[INFO] [stdout] test tests::optional_keys ... ok
[INFO] [stdout] test tests::owned_key ... ok
[INFO] [stdout] test tests::with_args ... ok
[INFO] [stdout] test tests::apply_iter ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests markings
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test src/lib.rs - Opts (line 275) ... ok
[INFO] [stdout] test src/lib.rs - Opts (line 269) ... ok
[INFO] [stdout] test src/lib.rs - Template::find_keys (line 204) ... ok
[INFO] [stdout] test src/lib.rs - Args (line 339) ... ok
[INFO] [stdout] test src/lib.rs - (line 6) ... ok
[INFO] [stdout] test src/lib.rs - Template (line 125) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.32s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1ef12c6587710db5dc108ecbd5b9da0fb4546a7d5822ebf34ec0c98e3f1b2359", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ef12c6587710db5dc108ecbd5b9da0fb4546a7d5822ebf34ec0c98e3f1b2359", kill_on_drop: false }`
[INFO] [stdout] 1ef12c6587710db5dc108ecbd5b9da0fb4546a7d5822ebf34ec0c98e3f1b2359