[INFO] fetching crate acid_io 0.1.0...
[INFO] checking acid_io-0.1.0 against master#b286722878e18db29a7fbe672be7c4d3b02e8e4d for pr-127655
[INFO] extracting crate acid_io 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate acid_io 0.1.0 on toolchain b286722878e18db29a7fbe672be7c4d3b02e8e4d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b286722878e18db29a7fbe672be7c4d3b02e8e4d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate acid_io 0.1.0
[INFO] finished tweaking crates.io crate acid_io 0.1.0
[INFO] tweaked toml for crates.io crate acid_io 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b286722878e18db29a7fbe672be7c4d3b02e8e4d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 10 packages to latest compatible versions
[INFO] [stderr]       Adding windows v0.29.0 (latest: v0.58.0)
[INFO] [stderr]       Adding windows_aarch64_msvc v0.29.0 (latest: v0.52.6)
[INFO] [stderr]       Adding windows_i686_gnu v0.29.0 (latest: v0.52.6)
[INFO] [stderr]       Adding windows_i686_msvc v0.29.0 (latest: v0.52.6)
[INFO] [stderr]       Adding windows_x86_64_gnu v0.29.0 (latest: v0.52.6)
[INFO] [stderr]       Adding windows_x86_64_msvc v0.29.0 (latest: v0.52.6)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b286722878e18db29a7fbe672be7c4d3b02e8e4d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded windows_i686_gnu v0.29.0
[INFO] [stderr]   Downloaded windows_aarch64_msvc v0.29.0
[INFO] [stderr]   Downloaded windows_x86_64_msvc v0.29.0
[INFO] [stderr]   Downloaded windows_i686_msvc v0.29.0
[INFO] [stderr]   Downloaded windows_x86_64_gnu v0.29.0
[INFO] [stderr]   Downloaded windows v0.29.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+b286722878e18db29a7fbe672be7c4d3b02e8e4d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 76cd820e34aef3ebe4e0cd66007bc61a54a4a9760949a18a06b23aaf88597add
[INFO] running `Command { std: "docker" "start" "-a" "76cd820e34aef3ebe4e0cd66007bc61a54a4a9760949a18a06b23aaf88597add", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "76cd820e34aef3ebe4e0cd66007bc61a54a4a9760949a18a06b23aaf88597add", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76cd820e34aef3ebe4e0cd66007bc61a54a4a9760949a18a06b23aaf88597add", kill_on_drop: false }`
[INFO] [stdout] 76cd820e34aef3ebe4e0cd66007bc61a54a4a9760949a18a06b23aaf88597add
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+b286722878e18db29a7fbe672be7c4d3b02e8e4d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e1fc2faf975bfcecd241e359acdac00dab0922b2e3371800b8aafbcfa27889d3
[INFO] running `Command { std: "docker" "start" "-a" "e1fc2faf975bfcecd241e359acdac00dab0922b2e3371800b8aafbcfa27889d3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]     Checking acid_io v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `ExampleSliceReader` is never constructed
[INFO] [stdout]    --> src/tests/mod.rs:373:8
[INFO] [stdout]     |
[INFO] [stdout] 373 | struct ExampleSliceReader<'a> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ShortReader` is never constructed
[INFO] [stdout]   --> src/tests/util.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | struct ShortReader {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `WriteObserver` is never constructed
[INFO] [stdout]   --> src/tests/util.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | struct WriteObserver {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `Command { std: "docker" "inspect" "e1fc2faf975bfcecd241e359acdac00dab0922b2e3371800b8aafbcfa27889d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1fc2faf975bfcecd241e359acdac00dab0922b2e3371800b8aafbcfa27889d3", kill_on_drop: false }`
[INFO] [stdout] e1fc2faf975bfcecd241e359acdac00dab0922b2e3371800b8aafbcfa27889d3
[INFO] checking acid_io-0.1.0 against try#6a5749073f2ebf59d7740d30e50a932a85756ee7 for pr-127655
[INFO] extracting crate acid_io 0.1.0 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate acid_io 0.1.0 on toolchain 6a5749073f2ebf59d7740d30e50a932a85756ee7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6a5749073f2ebf59d7740d30e50a932a85756ee7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate acid_io 0.1.0
[INFO] finished tweaking crates.io crate acid_io 0.1.0
[INFO] tweaked toml for crates.io crate acid_io 0.1.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6a5749073f2ebf59d7740d30e50a932a85756ee7" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 10 packages to latest compatible versions
[INFO] [stderr]       Adding windows v0.29.0 (latest: v0.58.0)
[INFO] [stderr]       Adding windows_aarch64_msvc v0.29.0 (latest: v0.52.6)
[INFO] [stderr]       Adding windows_i686_gnu v0.29.0 (latest: v0.52.6)
[INFO] [stderr]       Adding windows_i686_msvc v0.29.0 (latest: v0.52.6)
[INFO] [stderr]       Adding windows_x86_64_gnu v0.29.0 (latest: v0.52.6)
[INFO] [stderr]       Adding windows_x86_64_msvc v0.29.0 (latest: v0.52.6)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6a5749073f2ebf59d7740d30e50a932a85756ee7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+6a5749073f2ebf59d7740d30e50a932a85756ee7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8213b23384aab3e56f8e6c1d99d34ca727f1e0420c079b9905f5bee533f8e9fc
[INFO] running `Command { std: "docker" "start" "-a" "8213b23384aab3e56f8e6c1d99d34ca727f1e0420c079b9905f5bee533f8e9fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8213b23384aab3e56f8e6c1d99d34ca727f1e0420c079b9905f5bee533f8e9fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8213b23384aab3e56f8e6c1d99d34ca727f1e0420c079b9905f5bee533f8e9fc", kill_on_drop: false }`
[INFO] [stdout] 8213b23384aab3e56f8e6c1d99d34ca727f1e0420c079b9905f5bee533f8e9fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+6a5749073f2ebf59d7740d30e50a932a85756ee7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d8a29767991f1624d47e7aa1ec33b7d317240ace440ffd636667761671b2848f
[INFO] running `Command { std: "docker" "start" "-a" "d8a29767991f1624d47e7aa1ec33b7d317240ace440ffd636667761671b2848f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]     Checking acid_io v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `ExampleSliceReader` is never constructed
[INFO] [stdout]    --> src/tests/mod.rs:373:8
[INFO] [stdout]     |
[INFO] [stdout] 373 | struct ExampleSliceReader<'a> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ShortReader` is never constructed
[INFO] [stdout]   --> src/tests/util.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | struct ShortReader {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `WriteObserver` is never constructed
[INFO] [stdout]   --> src/tests/util.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | struct WriteObserver {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.53s
[INFO] running `Command { std: "docker" "inspect" "d8a29767991f1624d47e7aa1ec33b7d317240ace440ffd636667761671b2848f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8a29767991f1624d47e7aa1ec33b7d317240ace440ffd636667761671b2848f", kill_on_drop: false }`
[INFO] [stdout] d8a29767991f1624d47e7aa1ec33b7d317240ace440ffd636667761671b2848f
