[INFO] fetching crate mid 4.0.0...
[INFO] testing mid-4.0.0 against 1.91.0 for beta-1.92-2
[INFO] extracting crate mid 4.0.0 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate mid 4.0.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate mid 4.0.0
[INFO] tweaked toml for crates.io crate mid 4.0.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mid 4.0.0 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 mid 4.0.0 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] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded hmac-sha256 v1.1.12
[INFO] [stderr]   Downloaded syn v2.0.101
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 798d1285f003e13a8bcde418d0243e7a178203666af971db7f2548d01eed6d37
[INFO] running `Command { std: "docker" "start" "-a" "798d1285f003e13a8bcde418d0243e7a178203666af971db7f2548d01eed6d37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "798d1285f003e13a8bcde418d0243e7a178203666af971db7f2548d01eed6d37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "798d1285f003e13a8bcde418d0243e7a178203666af971db7f2548d01eed6d37", kill_on_drop: false }`
[INFO] [stdout] 798d1285f003e13a8bcde418d0243e7a178203666af971db7f2548d01eed6d37
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 3d9034a0d8989d5709cc956ac08003b05432af9119b628824f1cbef56873eedb
[INFO] running `Command { std: "docker" "start" "-a" "3d9034a0d8989d5709cc956ac08003b05432af9119b628824f1cbef56873eedb", kill_on_drop: false }`
[INFO] [stderr]    Compiling hmac-sha256 v1.1.12
[INFO] [stderr]    Compiling mid v4.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.53s
[INFO] running `Command { std: "docker" "inspect" "3d9034a0d8989d5709cc956ac08003b05432af9119b628824f1cbef56873eedb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d9034a0d8989d5709cc956ac08003b05432af9119b628824f1cbef56873eedb", kill_on_drop: false }`
[INFO] [stdout] 3d9034a0d8989d5709cc956ac08003b05432af9119b628824f1cbef56873eedb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 476e15ca5297f0a1cdfffcb868102bf64d317f9709423db5d21ad64bc4552aad
[INFO] running `Command { std: "docker" "start" "-a" "476e15ca5297f0a1cdfffcb868102bf64d317f9709423db5d21ad64bc4552aad", kill_on_drop: false }`
[INFO] [stderr]    Compiling mid v4.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `Command { std: "docker" "inspect" "476e15ca5297f0a1cdfffcb868102bf64d317f9709423db5d21ad64bc4552aad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "476e15ca5297f0a1cdfffcb868102bf64d317f9709423db5d21ad64bc4552aad", kill_on_drop: false }`
[INFO] [stdout] 476e15ca5297f0a1cdfffcb868102bf64d317f9709423db5d21ad64bc4552aad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 9f8a83e0a0712f173d785c7a28572465d6695a9e5dadc8b59bc55a86a6cbdba2
[INFO] running `Command { std: "docker" "start" "-a" "9f8a83e0a0712f173d785c7a28572465d6695a9e5dadc8b59bc55a86a6cbdba2", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mid-b2a6d645651f8581)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_mid_operations ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.07s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "9f8a83e0a0712f173d785c7a28572465d6695a9e5dadc8b59bc55a86a6cbdba2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f8a83e0a0712f173d785c7a28572465d6695a9e5dadc8b59bc55a86a6cbdba2", kill_on_drop: false }`
[INFO] [stdout] 9f8a83e0a0712f173d785c7a28572465d6695a9e5dadc8b59bc55a86a6cbdba2