[INFO] cloning repository https://github.com/mux-lang/tree-sitter-mux
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mux-lang/tree-sitter-mux" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmux-lang%2Ftree-sitter-mux", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmux-lang%2Ftree-sitter-mux'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d659f08aa37e6e3b17610a8d9f33a9a4e9d5394f
[INFO] checking mux-lang/tree-sitter-mux against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmux-lang%2Ftree-sitter-mux" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mux-lang/tree-sitter-mux 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/mux-lang/tree-sitter-mux
[INFO] finished tweaking git repo https://github.com/mux-lang/tree-sitter-mux
[INFO] tweaked toml for git repo https://github.com/mux-lang/tree-sitter-mux written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/mux-lang/tree-sitter-mux 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]     Blocking waiting for file lock on package cache
[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] 1721a9d72dcfbfd3850bee7d6d6ba6d6be2b3d0d6bced60e0b970932ebaabf09
[INFO] running `Command { std: "docker" "start" "-a" "1721a9d72dcfbfd3850bee7d6d6ba6d6be2b3d0d6bced60e0b970932ebaabf09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1721a9d72dcfbfd3850bee7d6d6ba6d6be2b3d0d6bced60e0b970932ebaabf09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1721a9d72dcfbfd3850bee7d6d6ba6d6be2b3d0d6bced60e0b970932ebaabf09", kill_on_drop: false }`
[INFO] [stdout] 1721a9d72dcfbfd3850bee7d6d6ba6d6be2b3d0d6bced60e0b970932ebaabf09
[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] a4f2963b8ac31c58157b09c78cefb5309d05ce1ddfeae76dd61ef634baf40760
[INFO] running `Command { std: "docker" "start" "-a" "a4f2963b8ac31c58157b09c78cefb5309d05ce1ddfeae76dd61ef634baf40760", kill_on_drop: false }`
[INFO] [stderr]    Compiling tree-sitter v0.20.10
[INFO] [stderr]     Checking regex-syntax v0.7.1
[INFO] [stderr]    Compiling tree-sitter-mux v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking aho-corasick v1.0.1
[INFO] [stderr]     Checking regex v1.8.1
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.33s
[INFO] running `Command { std: "docker" "inspect" "a4f2963b8ac31c58157b09c78cefb5309d05ce1ddfeae76dd61ef634baf40760", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4f2963b8ac31c58157b09c78cefb5309d05ce1ddfeae76dd61ef634baf40760", kill_on_drop: false }`
[INFO] [stdout] a4f2963b8ac31c58157b09c78cefb5309d05ce1ddfeae76dd61ef634baf40760
[INFO] checking mux-lang/tree-sitter-mux against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmux-lang%2Ftree-sitter-mux" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mux-lang/tree-sitter-mux 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/mux-lang/tree-sitter-mux
[INFO] finished tweaking git repo https://github.com/mux-lang/tree-sitter-mux
[INFO] tweaked toml for git repo https://github.com/mux-lang/tree-sitter-mux written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/mux-lang/tree-sitter-mux 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] edd1b5bff68830372e79b078eb0f47df4f8367564da071cf2a6110132d61cf5e
[INFO] running `Command { std: "docker" "start" "-a" "edd1b5bff68830372e79b078eb0f47df4f8367564da071cf2a6110132d61cf5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "edd1b5bff68830372e79b078eb0f47df4f8367564da071cf2a6110132d61cf5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "edd1b5bff68830372e79b078eb0f47df4f8367564da071cf2a6110132d61cf5e", kill_on_drop: false }`
[INFO] [stdout] edd1b5bff68830372e79b078eb0f47df4f8367564da071cf2a6110132d61cf5e
[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] d8b6338d6b2373876d45581d60e079dd485e61331d9ef1bdc75c50b959695076
[INFO] running `Command { std: "docker" "start" "-a" "d8b6338d6b2373876d45581d60e079dd485e61331d9ef1bdc75c50b959695076", kill_on_drop: false }`
[INFO] [stderr]     Checking aho-corasick v1.0.1
[INFO] [stderr]    Compiling tree-sitter v0.20.10
[INFO] [stderr]     Checking regex-syntax v0.7.1
[INFO] [stderr]    Compiling tree-sitter-mux v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking regex v1.8.1
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.94s
[INFO] running `Command { std: "docker" "inspect" "d8b6338d6b2373876d45581d60e079dd485e61331d9ef1bdc75c50b959695076", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8b6338d6b2373876d45581d60e079dd485e61331d9ef1bdc75c50b959695076", kill_on_drop: false }`
[INFO] [stdout] d8b6338d6b2373876d45581d60e079dd485e61331d9ef1bdc75c50b959695076