[INFO] fetching crate acid_io 0.1.0...
[INFO] checking acid_io-0.1.0 against master#b3bd7058c139e71bae0862ef8f8ac936208873e9 for pr-123752
[INFO] extracting crate acid_io 0.1.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate acid_io 0.1.0 on toolchain b3bd7058c139e71bae0862ef8f8ac936208873e9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "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-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 10 packages
[INFO] [stderr]       Adding windows v0.29.0 (latest: v0.54.0)
[INFO] [stderr]       Adding windows_aarch64_msvc v0.29.0 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_i686_gnu v0.29.0 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_i686_msvc v0.29.0 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_gnu v0.29.0 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_msvc v0.29.0 (latest: v0.52.4)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded windows_aarch64_msvc v0.29.0
[INFO] [stderr]   Downloaded windows_i686_gnu 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_x86_64_msvc v0.29.0
[INFO] [stderr]   Downloaded windows v0.29.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d0c1b2b07ebfab96ea03d9d10d9582fc0d7be0adcd5302f74b4ac06eb8078f63
[INFO] running `Command { std: "docker" "start" "-a" "d0c1b2b07ebfab96ea03d9d10d9582fc0d7be0adcd5302f74b4ac06eb8078f63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d0c1b2b07ebfab96ea03d9d10d9582fc0d7be0adcd5302f74b4ac06eb8078f63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0c1b2b07ebfab96ea03d9d10d9582fc0d7be0adcd5302f74b4ac06eb8078f63", kill_on_drop: false }`
[INFO] [stdout] d0c1b2b07ebfab96ea03d9d10d9582fc0d7be0adcd5302f74b4ac06eb8078f63
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ccd1249e5ed0f1849a51e0b0e7f42f550ba986fcaae719243be5e35b92117a71
[INFO] running `Command { std: "docker" "start" "-a" "ccd1249e5ed0f1849a51e0b0e7f42f550ba986fcaae719243be5e35b92117a71", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]     Checking memchr v2.7.2
[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 1.20s
[INFO] running `Command { std: "docker" "inspect" "ccd1249e5ed0f1849a51e0b0e7f42f550ba986fcaae719243be5e35b92117a71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ccd1249e5ed0f1849a51e0b0e7f42f550ba986fcaae719243be5e35b92117a71", kill_on_drop: false }`
[INFO] [stdout] ccd1249e5ed0f1849a51e0b0e7f42f550ba986fcaae719243be5e35b92117a71
[INFO] checking acid_io-0.1.0 against try#57fe1b734d9ff1c8a92bda60b85506b9648158d3 for pr-123752
[INFO] extracting crate acid_io 0.1.0 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate acid_io 0.1.0 on toolchain 57fe1b734d9ff1c8a92bda60b85506b9648158d3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+57fe1b734d9ff1c8a92bda60b85506b9648158d3" "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-0-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+57fe1b734d9ff1c8a92bda60b85506b9648158d3" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 10 packages
[INFO] [stderr]       Adding windows v0.29.0 (latest: v0.54.0)
[INFO] [stderr]       Adding windows_aarch64_msvc v0.29.0 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_i686_gnu v0.29.0 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_i686_msvc v0.29.0 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_gnu v0.29.0 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_msvc v0.29.0 (latest: v0.52.4)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+57fe1b734d9ff1c8a92bda60b85506b9648158d3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+57fe1b734d9ff1c8a92bda60b85506b9648158d3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7ac8d3a7f753d1d6153f9a275078c9d252415b8befa4aecca5ebcb6c659f67b1
[INFO] running `Command { std: "docker" "start" "-a" "7ac8d3a7f753d1d6153f9a275078c9d252415b8befa4aecca5ebcb6c659f67b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7ac8d3a7f753d1d6153f9a275078c9d252415b8befa4aecca5ebcb6c659f67b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ac8d3a7f753d1d6153f9a275078c9d252415b8befa4aecca5ebcb6c659f67b1", kill_on_drop: false }`
[INFO] [stdout] 7ac8d3a7f753d1d6153f9a275078c9d252415b8befa4aecca5ebcb6c659f67b1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+57fe1b734d9ff1c8a92bda60b85506b9648158d3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b850edd4cf00813bd7bbe89dec40a3d3a0e2e4c008ed4fa461fc1c753e90d110
[INFO] running `Command { std: "docker" "start" "-a" "b850edd4cf00813bd7bbe89dec40a3d3a0e2e4c008ed4fa461fc1c753e90d110", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]     Checking memchr v2.7.2
[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 1.33s
[INFO] running `Command { std: "docker" "inspect" "b850edd4cf00813bd7bbe89dec40a3d3a0e2e4c008ed4fa461fc1c753e90d110", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b850edd4cf00813bd7bbe89dec40a3d3a0e2e4c008ed4fa461fc1c753e90d110", kill_on_drop: false }`
[INFO] [stdout] b850edd4cf00813bd7bbe89dec40a3d3a0e2e4c008ed4fa461fc1c753e90d110
