[INFO] cloning repository https://github.com/antoyo/rustc_codegen_gcc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/antoyo/rustc_codegen_gcc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fantoyo%2Frustc_codegen_gcc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fantoyo%2Frustc_codegen_gcc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7c707e4b9535b70de8c6beac24b7bc05595b1932
[INFO] testing antoyo/rustc_codegen_gcc against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fantoyo%2Frustc_codegen_gcc" "/workspace/builds/worker-26/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-26/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/antoyo/rustc_codegen_gcc on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-26/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/antoyo/rustc_codegen_gcc
[INFO] removed 0 missing tests
[INFO] finished tweaking git repo https://github.com/antoyo/rustc_codegen_gcc
[INFO] tweaked toml for git repo https://github.com/antoyo/rustc_codegen_gcc written to /workspace/builds/worker-26/source/Cargo.toml
[INFO] crate git repo https://github.com/antoyo/rustc_codegen_gcc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/antoyo/gccjit.rs`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 624bc0448a17dd60e5a7eb77c8c2bc489d20ce40812a59b35e7db096132eada7
[INFO] running `Command { std: "docker" "start" "-a" "624bc0448a17dd60e5a7eb77c8c2bc489d20ce40812a59b35e7db096132eada7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "624bc0448a17dd60e5a7eb77c8c2bc489d20ce40812a59b35e7db096132eada7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "624bc0448a17dd60e5a7eb77c8c2bc489d20ce40812a59b35e7db096132eada7", kill_on_drop: false }`
[INFO] [stdout] 624bc0448a17dd60e5a7eb77c8c2bc489d20ce40812a59b35e7db096132eada7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c408d45e075d86142ed357971f739842f5c472ec38b6b02b03c9554158294481
[INFO] running `Command { std: "docker" "start" "-a" "c408d45e075d86142ed357971f739842f5c472ec38b6b02b03c9554158294481", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling libc v0.1.12
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling target-lexicon v0.10.0
[INFO] [stderr]    Compiling ar v0.8.0
[INFO] [stderr]    Compiling gccjit_sys v0.0.1 (https://github.com/antoyo/gccjit.rs#54be27e4)
[INFO] [stderr]    Compiling gccjit v1.0.0 (https://github.com/antoyo/gccjit.rs#54be27e4)
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling object v0.25.3
[INFO] [stderr]    Compiling rustc_codegen_gcc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0463]: can't find crate for `rustc_ast`
[INFO] [stdout]   --> src/lib.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | extern crate rustc_ast;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustc_codegen_gcc` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "c408d45e075d86142ed357971f739842f5c472ec38b6b02b03c9554158294481", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c408d45e075d86142ed357971f739842f5c472ec38b6b02b03c9554158294481", kill_on_drop: false }`
[INFO] [stdout] c408d45e075d86142ed357971f739842f5c472ec38b6b02b03c9554158294481