[INFO] fetching crate piow 0.5.0...
[INFO] checking piow-0.5.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate piow 0.5.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate piow 0.5.0 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 piow 0.5.0
[INFO] finished tweaking crates.io crate piow 0.5.0
[INFO] tweaked toml for crates.io crate piow 0.5.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate piow 0.5.0 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded swayipc-types v1.1.0
[INFO] [stderr]   Downloaded syslog v6.0.1
[INFO] [stderr]   Downloaded polling v2.2.0
[INFO] [stderr]   Downloaded swayipc-async v2.0.0
[INFO] [stderr]   Downloaded crossbeam-epoch v0.9.14
[INFO] [stderr]   Downloaded async-pidfd v0.1.4
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.15
[INFO] [stderr]   Downloaded cache-padded v1.2.0
[INFO] [stderr]   Downloaded sysinfo v0.29.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 0f057c540d75b25ba84ee85e3a9b1b5d083154d6024782c49f123b3048dd36d5
[INFO] running `Command { std: "docker" "start" "-a" "0f057c540d75b25ba84ee85e3a9b1b5d083154d6024782c49f123b3048dd36d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0f057c540d75b25ba84ee85e3a9b1b5d083154d6024782c49f123b3048dd36d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f057c540d75b25ba84ee85e3a9b1b5d083154d6024782c49f123b3048dd36d5", kill_on_drop: false }`
[INFO] [stdout] 0f057c540d75b25ba84ee85e3a9b1b5d083154d6024782c49f123b3048dd36d5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 635763c83fd3cebd7b94ebab1592f344f8db1ee83e2a523a4d04992b321d4406
[INFO] running `Command { std: "docker" "start" "-a" "635763c83fd3cebd7b94ebab1592f344f8db1ee83e2a523a4d04992b321d4406", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.124
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling crossbeam-utils v0.8.15
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]     Checking pin-project-lite v0.2.8
[INFO] [stderr]    Compiling memoffset v0.8.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.14
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]     Checking futures-io v0.3.21
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]     Checking cache-padded v1.2.0
[INFO] [stderr]    Compiling rayon-core v1.11.0
[INFO] [stderr]     Checking slab v0.4.6
[INFO] [stderr]     Checking parking v2.0.0
[INFO] [stderr]     Checking once_cell v1.10.0
[INFO] [stderr]     Checking fastrand v1.7.0
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking concurrent-queue v1.2.2
[INFO] [stderr]     Checking futures-lite v1.12.0
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]     Checking polling v2.2.0
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]     Checking crossbeam-channel v0.5.8
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]    Compiling indexmap v1.8.1
[INFO] [stderr]     Checking match_cfg v0.1.0
[INFO] [stderr]    Compiling anyhow v1.0.57
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]     Checking num_threads v0.1.5
[INFO] [stderr]     Checking time v0.3.9
[INFO] [stderr]     Checking hostname v0.3.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking dirs-sys v0.3.7
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]     Checking async-io v1.6.0
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking dirs v4.0.0
[INFO] [stderr]     Checking rayon v1.7.0
[INFO] [stderr]     Checking async-pidfd v0.1.4
[INFO] [stderr]     Checking syslog v6.0.1
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]     Checking sysinfo v0.29.0
[INFO] [stderr]     Checking tokio v1.17.0
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking docopt v1.1.1
[INFO] [stderr]     Checking toml v0.5.9
[INFO] [stderr]     Checking swayipc-types v1.1.0
[INFO] [stderr]     Checking swayipc-async v2.0.0
[INFO] [stderr]     Checking piow v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 40.70s
[INFO] running `Command { std: "docker" "inspect" "635763c83fd3cebd7b94ebab1592f344f8db1ee83e2a523a4d04992b321d4406", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "635763c83fd3cebd7b94ebab1592f344f8db1ee83e2a523a4d04992b321d4406", kill_on_drop: false }`
[INFO] [stdout] 635763c83fd3cebd7b94ebab1592f344f8db1ee83e2a523a4d04992b321d4406
[INFO] checking piow-0.5.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate piow 0.5.0 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate piow 0.5.0 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 piow 0.5.0
[INFO] finished tweaking crates.io crate piow 0.5.0
[INFO] tweaked toml for crates.io crate piow 0.5.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate crates.io crate piow 0.5.0 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 471b69841e1a19680bf7aa2cd738e6200dd4099f92fb5ec3d9e93a1ca5f41a8d
[INFO] running `Command { std: "docker" "start" "-a" "471b69841e1a19680bf7aa2cd738e6200dd4099f92fb5ec3d9e93a1ca5f41a8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "471b69841e1a19680bf7aa2cd738e6200dd4099f92fb5ec3d9e93a1ca5f41a8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "471b69841e1a19680bf7aa2cd738e6200dd4099f92fb5ec3d9e93a1ca5f41a8d", kill_on_drop: false }`
[INFO] [stdout] 471b69841e1a19680bf7aa2cd738e6200dd4099f92fb5ec3d9e93a1ca5f41a8d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] de6ab292407d4b52d8c8e82e26f8c93c7672066605acaea061731dd6315acf7a
[INFO] running `Command { std: "docker" "start" "-a" "de6ab292407d4b52d8c8e82e26f8c93c7672066605acaea061731dd6315acf7a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.124
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling crossbeam-utils v0.8.15
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling memoffset v0.8.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.14
[INFO] [stderr]     Checking pin-project-lite v0.2.8
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]     Checking parking v2.0.0
[INFO] [stderr]    Compiling rayon-core v1.11.0
[INFO] [stderr]     Checking fastrand v1.7.0
[INFO] [stderr]     Checking slab v0.4.6
[INFO] [stderr]     Checking futures-io v0.3.21
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]     Checking once_cell v1.10.0
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking cache-padded v1.2.0
[INFO] [stderr]     Checking futures-lite v1.12.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.8
[INFO] [stderr]     Checking concurrent-queue v1.2.2
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]     Checking polling v2.2.0
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]    Compiling indexmap v1.8.1
[INFO] [stderr]     Checking num_threads v0.1.5
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]    Compiling anyhow v1.0.57
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]     Checking match_cfg v0.1.0
[INFO] [stderr]     Checking hostname v0.3.1
[INFO] [stderr]     Checking async-io v1.6.0
[INFO] [stderr]     Checking time v0.3.9
[INFO] [stderr]     Checking rayon v1.7.0
[INFO] [stderr]     Checking dirs-sys v0.3.7
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking async-pidfd v0.1.4
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking dirs v4.0.0
[INFO] [stderr]     Checking syslog v6.0.1
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]     Checking sysinfo v0.29.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]     Checking tokio v1.17.0
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking toml v0.5.9
[INFO] [stderr]     Checking docopt v1.1.1
[INFO] [stderr]     Checking swayipc-types v1.1.0
[INFO] [stderr]     Checking swayipc-async v2.0.0
[INFO] [stderr]     Checking piow v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 39.11s
[INFO] running `Command { std: "docker" "inspect" "de6ab292407d4b52d8c8e82e26f8c93c7672066605acaea061731dd6315acf7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de6ab292407d4b52d8c8e82e26f8c93c7672066605acaea061731dd6315acf7a", kill_on_drop: false }`
[INFO] [stdout] de6ab292407d4b52d8c8e82e26f8c93c7672066605acaea061731dd6315acf7a