[INFO] fetching crate takyon 0.2.0...
[INFO] checking takyon-0.2.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate takyon 0.2.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate takyon 0.2.0 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 takyon 0.2.0
[INFO] finished tweaking crates.io crate takyon 0.2.0
[INFO] tweaked toml for crates.io crate takyon 0.2.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate takyon 0.2.0 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nohash v0.2.0
[INFO] [stderr]   Downloaded io-uring v0.6.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 97c045115e2d9cfd509c9ffd4cf2664dfd9b58daa5aa767eefc4f9df86d65c16
[INFO] running `Command { std: "docker" "start" "-a" "97c045115e2d9cfd509c9ffd4cf2664dfd9b58daa5aa767eefc4f9df86d65c16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "97c045115e2d9cfd509c9ffd4cf2664dfd9b58daa5aa767eefc4f9df86d65c16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97c045115e2d9cfd509c9ffd4cf2664dfd9b58daa5aa767eefc4f9df86d65c16", kill_on_drop: false }`
[INFO] [stdout] 97c045115e2d9cfd509c9ffd4cf2664dfd9b58daa5aa767eefc4f9df86d65c16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 76363fd2f985fde7f006ebe32d5286b903dcbe8b9d1053598afffbdb56348179
[INFO] running `Command { std: "docker" "start" "-a" "76363fd2f985fde7f006ebe32d5286b903dcbe8b9d1053598afffbdb56348179", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling io-uring v0.6.2
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking pin-project-lite v0.2.13
[INFO] [stderr]     Checking nohash v0.2.0
[INFO] [stderr]     Checking takyon v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.51s
[INFO] running `Command { std: "docker" "inspect" "76363fd2f985fde7f006ebe32d5286b903dcbe8b9d1053598afffbdb56348179", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76363fd2f985fde7f006ebe32d5286b903dcbe8b9d1053598afffbdb56348179", kill_on_drop: false }`
[INFO] [stdout] 76363fd2f985fde7f006ebe32d5286b903dcbe8b9d1053598afffbdb56348179
[INFO] checking takyon-0.2.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate takyon 0.2.0 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate takyon 0.2.0 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 takyon 0.2.0
[INFO] finished tweaking crates.io crate takyon 0.2.0
[INFO] tweaked toml for crates.io crate takyon 0.2.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate crates.io crate takyon 0.2.0 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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] e1f362b5ba3c1a66f617fdc398aad5e97f3b959d82f8628049a29a5c93b47e03
[INFO] running `Command { std: "docker" "start" "-a" "e1f362b5ba3c1a66f617fdc398aad5e97f3b959d82f8628049a29a5c93b47e03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e1f362b5ba3c1a66f617fdc398aad5e97f3b959d82f8628049a29a5c93b47e03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1f362b5ba3c1a66f617fdc398aad5e97f3b959d82f8628049a29a5c93b47e03", kill_on_drop: false }`
[INFO] [stdout] e1f362b5ba3c1a66f617fdc398aad5e97f3b959d82f8628049a29a5c93b47e03
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 634fecaaa54a3ba6318c7f9c8ae271b27f6c66e62e16a84e64acd7c2a9931629
[INFO] running `Command { std: "docker" "start" "-a" "634fecaaa54a3ba6318c7f9c8ae271b27f6c66e62e16a84e64acd7c2a9931629", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling io-uring v0.6.2
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking nohash v0.2.0
[INFO] [stderr]     Checking pin-project-lite v0.2.13
[INFO] [stderr]     Checking takyon v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.42s
[INFO] running `Command { std: "docker" "inspect" "634fecaaa54a3ba6318c7f9c8ae271b27f6c66e62e16a84e64acd7c2a9931629", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "634fecaaa54a3ba6318c7f9c8ae271b27f6c66e62e16a84e64acd7c2a9931629", kill_on_drop: false }`
[INFO] [stdout] 634fecaaa54a3ba6318c7f9c8ae271b27f6c66e62e16a84e64acd7c2a9931629