[INFO] fetching crate mrg 0.2.2...
[INFO] testing mrg-0.2.2 against 1.90.0 for beta-1.91-3
[INFO] extracting crate mrg 0.2.2 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate mrg 0.2.2
[INFO] finished tweaking crates.io crate mrg 0.2.2
[INFO] tweaked toml for crates.io crate mrg 0.2.2 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mrg 0.2.2 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "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" "+1.90.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 4 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dfee37f33427c00bf3858967742a126866644fb72f3732f0a0bbaba0aad1dffc
[INFO] running `Command { std: "docker" "start" "-a" "dfee37f33427c00bf3858967742a126866644fb72f3732f0a0bbaba0aad1dffc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dfee37f33427c00bf3858967742a126866644fb72f3732f0a0bbaba0aad1dffc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfee37f33427c00bf3858967742a126866644fb72f3732f0a0bbaba0aad1dffc", kill_on_drop: false }`
[INFO] [stdout] dfee37f33427c00bf3858967742a126866644fb72f3732f0a0bbaba0aad1dffc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] df0263b1788c789a9d4a259ce0e2ba0e4ad4766ca32d169393bf165ac29e04e5
[INFO] running `Command { std: "docker" "start" "-a" "df0263b1788c789a9d4a259ce0e2ba0e4ad4766ca32d169393bf165ac29e04e5", kill_on_drop: false }`
[INFO] [stderr]    Compiling mrg v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "df0263b1788c789a9d4a259ce0e2ba0e4ad4766ca32d169393bf165ac29e04e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df0263b1788c789a9d4a259ce0e2ba0e4ad4766ca32d169393bf165ac29e04e5", kill_on_drop: false }`
[INFO] [stdout] df0263b1788c789a9d4a259ce0e2ba0e4ad4766ca32d169393bf165ac29e04e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fd968498e69b6d9a7e1ea8b9cc369c20a264415484987ca3052283b8b36f6b1c
[INFO] running `Command { std: "docker" "start" "-a" "fd968498e69b6d9a7e1ea8b9cc369c20a264415484987ca3052283b8b36f6b1c", kill_on_drop: false }`
[INFO] [stderr]    Compiling mrg v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `Command { std: "docker" "inspect" "fd968498e69b6d9a7e1ea8b9cc369c20a264415484987ca3052283b8b36f6b1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd968498e69b6d9a7e1ea8b9cc369c20a264415484987ca3052283b8b36f6b1c", kill_on_drop: false }`
[INFO] [stdout] fd968498e69b6d9a7e1ea8b9cc369c20a264415484987ca3052283b8b36f6b1c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7ea601e2431f785a459ba9256f57f69e106fefd8684c99f2c3e2ed1fc216731d
[INFO] running `Command { std: "docker" "start" "-a" "7ea601e2431f785a459ba9256f57f69e106fefd8684c99f2c3e2ed1fc216731d", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mrg-d34fc7cb4cc2ae21)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test deserializer::tests::check_tracks_count ... ok
[INFO] [stdout] test deserializer::tests::check_track ... ok
[INFO] [stdout] test serializer::tests::serialize_mrg ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mrg
[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" "7ea601e2431f785a459ba9256f57f69e106fefd8684c99f2c3e2ed1fc216731d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ea601e2431f785a459ba9256f57f69e106fefd8684c99f2c3e2ed1fc216731d", kill_on_drop: false }`
[INFO] [stdout] 7ea601e2431f785a459ba9256f57f69e106fefd8684c99f2c3e2ed1fc216731d