[INFO] fetching crate io_check 0.1.2... [INFO] checking io_check-0.1.2 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never [INFO] extracting crate io_check 0.1.2 into /workspace/builds/worker-5-tc1/source [INFO] validating manifest of crates.io crate io_check 0.1.2 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate io_check 0.1.2 [INFO] finished tweaking crates.io crate io_check 0.1.2 [INFO] tweaked toml for crates.io crate io_check 0.1.2 written to /workspace/builds/worker-5-tc1/source/Cargo.toml [INFO] crate crates.io crate io_check 0.1.2 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 450cdcecf6714c874dd446b2bd738d31d9527e3bda9b1202b23697a221537fa7 [INFO] running `Command { std: "docker" "start" "-a" "450cdcecf6714c874dd446b2bd738d31d9527e3bda9b1202b23697a221537fa7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "450cdcecf6714c874dd446b2bd738d31d9527e3bda9b1202b23697a221537fa7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "450cdcecf6714c874dd446b2bd738d31d9527e3bda9b1202b23697a221537fa7", kill_on_drop: false }` [INFO] [stdout] 450cdcecf6714c874dd446b2bd738d31d9527e3bda9b1202b23697a221537fa7 [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=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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] efa56e7f79639e7babc9a98c27a421ef7eed0d4ede78259dbb5f355eff34abeb [INFO] running `Command { std: "docker" "start" "-a" "efa56e7f79639e7babc9a98c27a421ef7eed0d4ede78259dbb5f355eff34abeb", kill_on_drop: false }` [INFO] [stderr] Compiling memchr v2.5.0 [INFO] [stderr] Compiling libc v0.2.126 [INFO] [stderr] Compiling backtrace v0.3.66 [INFO] [stderr] Checking gimli v0.26.2 [INFO] [stderr] Checking rustc-demangle v0.1.21 [INFO] [stderr] Checking either v1.7.0 [INFO] [stderr] Checking miniz_oxide v0.5.3 [INFO] [stderr] Checking object v0.29.0 [INFO] [stderr] Checking addr2line v0.17.0 [INFO] [stderr] Checking io_check v0.1.2 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.90s [INFO] running `Command { std: "docker" "inspect" "efa56e7f79639e7babc9a98c27a421ef7eed0d4ede78259dbb5f355eff34abeb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "efa56e7f79639e7babc9a98c27a421ef7eed0d4ede78259dbb5f355eff34abeb", kill_on_drop: false }` [INFO] [stdout] efa56e7f79639e7babc9a98c27a421ef7eed0d4ede78259dbb5f355eff34abeb [INFO] checking io_check-0.1.2 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never [INFO] extracting crate io_check 0.1.2 into /workspace/builds/worker-5-tc2/source [INFO] validating manifest of crates.io crate io_check 0.1.2 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate io_check 0.1.2 [INFO] finished tweaking crates.io crate io_check 0.1.2 [INFO] tweaked toml for crates.io crate io_check 0.1.2 written to /workspace/builds/worker-5-tc2/source/Cargo.toml [INFO] crate crates.io crate io_check 0.1.2 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] ae9e70a151a16668b562aff8b150bb5870fd876fddf4bfd79df7be12f1718636 [INFO] running `Command { std: "docker" "start" "-a" "ae9e70a151a16668b562aff8b150bb5870fd876fddf4bfd79df7be12f1718636", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ae9e70a151a16668b562aff8b150bb5870fd876fddf4bfd79df7be12f1718636", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ae9e70a151a16668b562aff8b150bb5870fd876fddf4bfd79df7be12f1718636", kill_on_drop: false }` [INFO] [stdout] ae9e70a151a16668b562aff8b150bb5870fd876fddf4bfd79df7be12f1718636 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 214c56dc50c37dc735c299b99f7b95c33d6feabda1af6fc99d6a44c56fe694d2 [INFO] running `Command { std: "docker" "start" "-a" "214c56dc50c37dc735c299b99f7b95c33d6feabda1af6fc99d6a44c56fe694d2", kill_on_drop: false }` [INFO] [stderr] Compiling memchr v2.5.0 [INFO] [stderr] Compiling libc v0.2.126 [INFO] [stderr] Checking gimli v0.26.2 [INFO] [stderr] Checking rustc-demangle v0.1.21 [INFO] [stderr] Checking either v1.7.0 [INFO] [stderr] Compiling backtrace v0.3.66 [INFO] [stderr] Checking miniz_oxide v0.5.3 [INFO] [stderr] Checking object v0.29.0 [INFO] [stderr] Checking addr2line v0.17.0 [INFO] [stderr] Checking io_check v0.1.2 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.62s [INFO] running `Command { std: "docker" "inspect" "214c56dc50c37dc735c299b99f7b95c33d6feabda1af6fc99d6a44c56fe694d2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "214c56dc50c37dc735c299b99f7b95c33d6feabda1af6fc99d6a44c56fe694d2", kill_on_drop: false }` [INFO] [stdout] 214c56dc50c37dc735c299b99f7b95c33d6feabda1af6fc99d6a44c56fe694d2