[INFO] cloning repository https://github.com/kstatz12/rustrelax
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kstatz12/rustrelax" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkstatz12%2Frustrelax", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkstatz12%2Frustrelax'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 563f8bc7251c9584b8f25a4b71945d3a7ab24aa9
[INFO] checking kstatz12/rustrelax against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkstatz12%2Frustrelax" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kstatz12/rustrelax 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 git repo https://github.com/kstatz12/rustrelax
[INFO] finished tweaking git repo https://github.com/kstatz12/rustrelax
[INFO] tweaked toml for git repo https://github.com/kstatz12/rustrelax written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/kstatz12/rustrelax 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 string-builder v0.2.0
[INFO] [stderr]   Downloaded clang-sys v1.2.1
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 36be9702cf13c53df23ba577691df654f0a0a164e14898e7123ed2eea31ee36b
[INFO] running `Command { std: "docker" "start" "-a" "36be9702cf13c53df23ba577691df654f0a0a164e14898e7123ed2eea31ee36b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "36be9702cf13c53df23ba577691df654f0a0a164e14898e7123ed2eea31ee36b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36be9702cf13c53df23ba577691df654f0a0a164e14898e7123ed2eea31ee36b", kill_on_drop: false }`
[INFO] [stdout] 36be9702cf13c53df23ba577691df654f0a0a164e14898e7123ed2eea31ee36b
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 01a125457de8cd32279d0961aa3fdd974be2f91676181b3193ec4e48ebd4e917
[INFO] running `Command { std: "docker" "start" "-a" "01a125457de8cd32279d0961aa3fdd974be2f91676181b3193ec4e48ebd4e917", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling cpal v0.13.4
[INFO] [stderr]     Checking claxon v0.4.3
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]     Checking instant v0.1.10
[INFO] [stderr]     Checking lock_api v0.4.5
[INFO] [stderr]     Checking tinyvec v1.3.1
[INFO] [stderr]     Checking ogg v0.8.0
[INFO] [stderr]     Checking hound v3.4.0
[INFO] [stderr]     Checking string-builder v0.2.0
[INFO] [stderr]    Compiling alsa-sys v0.3.1
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking lewton v0.10.2
[INFO] [stderr]     Checking nix v0.20.1
[INFO] [stderr]     Checking parking_lot_core v0.8.5
[INFO] [stderr]     Checking slice-deque v0.3.0
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling jobserver v0.1.24
[INFO] [stderr]     Checking signal-hook v0.3.9
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]    Compiling cc v1.0.69
[INFO] [stderr]    Compiling minimp3-sys v0.3.2
[INFO] [stderr]     Checking alsa v0.5.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.28
[INFO] [stderr]     Checking thiserror v1.0.28
[INFO] [stderr]     Checking minimp3 v0.5.1
[INFO] [stderr]     Checking rodio v0.14.0
[INFO] [stderr]     Checking rustrelax v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.24s
[INFO] running `Command { std: "docker" "inspect" "01a125457de8cd32279d0961aa3fdd974be2f91676181b3193ec4e48ebd4e917", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01a125457de8cd32279d0961aa3fdd974be2f91676181b3193ec4e48ebd4e917", kill_on_drop: false }`
[INFO] [stdout] 01a125457de8cd32279d0961aa3fdd974be2f91676181b3193ec4e48ebd4e917
[INFO] checking kstatz12/rustrelax against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkstatz12%2Frustrelax" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kstatz12/rustrelax 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 git repo https://github.com/kstatz12/rustrelax
[INFO] finished tweaking git repo https://github.com/kstatz12/rustrelax
[INFO] tweaked toml for git repo https://github.com/kstatz12/rustrelax written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/kstatz12/rustrelax 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-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 68af484b8554c0766a5da5f06a3d15c1c51992de087b13d2e4724594b52652f7
[INFO] running `Command { std: "docker" "start" "-a" "68af484b8554c0766a5da5f06a3d15c1c51992de087b13d2e4724594b52652f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "68af484b8554c0766a5da5f06a3d15c1c51992de087b13d2e4724594b52652f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68af484b8554c0766a5da5f06a3d15c1c51992de087b13d2e4724594b52652f7", kill_on_drop: false }`
[INFO] [stdout] 68af484b8554c0766a5da5f06a3d15c1c51992de087b13d2e4724594b52652f7
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ddfc8704b836b59cdecbb29ba0e8139d1800643d462dedb91f8fc1e9b4d5b244
[INFO] running `Command { std: "docker" "start" "-a" "ddfc8704b836b59cdecbb29ba0e8139d1800643d462dedb91f8fc1e9b4d5b244", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]     Checking instant v0.1.10
[INFO] [stderr]    Compiling cpal v0.13.4
[INFO] [stderr]     Checking hound v3.4.0
[INFO] [stderr]     Checking claxon v0.4.3
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]     Checking lock_api v0.4.5
[INFO] [stderr]     Checking tinyvec v1.3.1
[INFO] [stderr]     Checking ogg v0.8.0
[INFO] [stderr]     Checking string-builder v0.2.0
[INFO] [stderr]    Compiling alsa-sys v0.3.1
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking lewton v0.10.2
[INFO] [stderr]     Checking nix v0.20.1
[INFO] [stderr]     Checking parking_lot_core v0.8.5
[INFO] [stderr]     Checking slice-deque v0.3.0
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling jobserver v0.1.24
[INFO] [stderr]     Checking signal-hook v0.3.9
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]    Compiling cc v1.0.69
[INFO] [stderr]    Compiling minimp3-sys v0.3.2
[INFO] [stderr]     Checking alsa v0.5.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.28
[INFO] [stderr]     Checking thiserror v1.0.28
[INFO] [stderr]     Checking minimp3 v0.5.1
[INFO] [stderr]     Checking rodio v0.14.0
[INFO] [stderr]     Checking rustrelax v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.10s
[INFO] running `Command { std: "docker" "inspect" "ddfc8704b836b59cdecbb29ba0e8139d1800643d462dedb91f8fc1e9b4d5b244", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ddfc8704b836b59cdecbb29ba0e8139d1800643d462dedb91f8fc1e9b4d5b244", kill_on_drop: false }`
[INFO] [stdout] ddfc8704b836b59cdecbb29ba0e8139d1800643d462dedb91f8fc1e9b4d5b244