[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] 26f08f547bd8d9c005a44b626c892d3f4c2b402b
[INFO] testing antoyo/rustc_codegen_gcc against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fantoyo%2Frustc_codegen_gcc" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/antoyo/rustc_codegen_gcc on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-0/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-0/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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ar v0.8.0
[INFO] [stderr]   Downloaded fm v0.1.4
[INFO] [stderr]   Downloaded lang_tester v0.3.13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 230c4459a471ba93fd38f949f54913ef05c5736bf52b6c097c9dd19819398eb3
[INFO] running `Command { std: "docker" "start" "-a" "230c4459a471ba93fd38f949f54913ef05c5736bf52b6c097c9dd19819398eb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "230c4459a471ba93fd38f949f54913ef05c5736bf52b6c097c9dd19819398eb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "230c4459a471ba93fd38f949f54913ef05c5736bf52b6c097c9dd19819398eb3", kill_on_drop: false }`
[INFO] [stdout] 230c4459a471ba93fd38f949f54913ef05c5736bf52b6c097c9dd19819398eb3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4c963b9654c39cb2349650d6049ae037597f73f746fa59603e769dcc18f947e8
[INFO] running `Command { std: "docker" "start" "-a" "4c963b9654c39cb2349650d6049ae037597f73f746fa59603e769dcc18f947e8", 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 hashbrown v0.9.1
[INFO] [stderr]    Compiling libc v0.1.12
[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#c736ae6c)
[INFO] [stderr]    Compiling gccjit v1.0.0 (https://github.com/antoyo/gccjit.rs#c736ae6c)
[INFO] [stderr]    Compiling indexmap v1.6.2
[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:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | extern crate rustc_ast;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustc_codegen_gcc`
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "4c963b9654c39cb2349650d6049ae037597f73f746fa59603e769dcc18f947e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c963b9654c39cb2349650d6049ae037597f73f746fa59603e769dcc18f947e8", kill_on_drop: false }`
[INFO] [stdout] 4c963b9654c39cb2349650d6049ae037597f73f746fa59603e769dcc18f947e8