[INFO] fetching crate ioprio 0.2.0...
[INFO] testing ioprio-0.2.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate ioprio 0.2.0 into /workspace/builds/worker-42/source
[INFO] validating manifest of crates.io crate ioprio 0.2.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ioprio 0.2.0
[INFO] finished tweaking crates.io crate ioprio 0.2.0
[INFO] tweaked toml for crates.io crate ioprio 0.2.0 written to /workspace/builds/worker-42/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5fe94a005a05172f5d6e0f377f0bda62671260718bd1f411b40ede1b75608853
[INFO] running `Command { std: "docker" "start" "-a" "5fe94a005a05172f5d6e0f377f0bda62671260718bd1f411b40ede1b75608853", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5fe94a005a05172f5d6e0f377f0bda62671260718bd1f411b40ede1b75608853", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fe94a005a05172f5d6e0f377f0bda62671260718bd1f411b40ede1b75608853", kill_on_drop: false }`
[INFO] [stdout] 5fe94a005a05172f5d6e0f377f0bda62671260718bd1f411b40ede1b75608853
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 53d0740a3322c5821a484235b71728c19cfd2d55e6b6c3d9f4dfa58b587e9461
[INFO] running `Command { std: "docker" "start" "-a" "53d0740a3322c5821a484235b71728c19cfd2d55e6b6c3d9f4dfa58b587e9461", kill_on_drop: false }`
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling nix v0.21.1
[INFO] [stderr]    Compiling ioprio v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.18s
[INFO] running `Command { std: "docker" "inspect" "53d0740a3322c5821a484235b71728c19cfd2d55e6b6c3d9f4dfa58b587e9461", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53d0740a3322c5821a484235b71728c19cfd2d55e6b6c3d9f4dfa58b587e9461", kill_on_drop: false }`
[INFO] [stdout] 53d0740a3322c5821a484235b71728c19cfd2d55e6b6c3d9f4dfa58b587e9461
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 14f743be32e316947a236eb20950cd88e1e66d6dbaff56b5f2c37efcc3be45f5
[INFO] running `Command { std: "docker" "start" "-a" "14f743be32e316947a236eb20950cd88e1e66d6dbaff56b5f2c37efcc3be45f5", kill_on_drop: false }`
[INFO] [stderr]    Compiling ioprio v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.90s
[INFO] running `Command { std: "docker" "inspect" "14f743be32e316947a236eb20950cd88e1e66d6dbaff56b5f2c37efcc3be45f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14f743be32e316947a236eb20950cd88e1e66d6dbaff56b5f2c37efcc3be45f5", kill_on_drop: false }`
[INFO] [stdout] 14f743be32e316947a236eb20950cd88e1e66d6dbaff56b5f2c37efcc3be45f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 082511f838604fd99a74b685fd9a3710210aabacbc6e0b1ea33a5d126bc8c94a
[INFO] running `Command { std: "docker" "start" "-a" "082511f838604fd99a74b685fd9a3710210aabacbc6e0b1ea33a5d126bc8c94a", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ioprio-6046718a4943c8fa)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ioprio
[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] error[E0433]: failed to resolve: use of undeclared crate or module `iou_`
[INFO] [stderr]    --> /opt/rustwide/workdir/src/lib.rs:290:30
[INFO] [stderr]     |
[INFO] [stderr] 290 |     impl private::Sealed for iou_::SQE<'_> {}
[INFO] [stderr]     |                              ^^^^ use of undeclared crate or module `iou_`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared crate or module `iou_`
[INFO] [stderr]    --> /opt/rustwide/workdir/src/lib.rs:300:21
[INFO] [stderr]     |
[INFO] [stderr] 300 |     impl SqeExt for iou_::SQE<'_> {
[INFO] [stderr]     |                     ^^^^ use of undeclared crate or module `iou_`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0433`.
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "082511f838604fd99a74b685fd9a3710210aabacbc6e0b1ea33a5d126bc8c94a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "082511f838604fd99a74b685fd9a3710210aabacbc6e0b1ea33a5d126bc8c94a", kill_on_drop: false }`
[INFO] [stdout] 082511f838604fd99a74b685fd9a3710210aabacbc6e0b1ea33a5d126bc8c94a