[INFO] crate rerast 0.1.73 is already in cache
[INFO] checking rerast-0.1.73 against try#e922e6444795ab795fab1943288aee3d543699b8 for pr-66852
[INFO] extracting crate rerast 0.1.73 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate rerast 0.1.73 on toolchain e922e6444795ab795fab1943288aee3d543699b8
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e922e6444795ab795fab1943288aee3d543699b8" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate rerast 0.1.73
[INFO] finished tweaking crates.io crate rerast 0.1.73
[INFO] tweaked toml for crates.io crate rerast 0.1.73 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate rerast 0.1.73 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e922e6444795ab795fab1943288aee3d543699b8" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e922e6444795ab795fab1943288aee3d543699b8" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3e237dedc72d235b0a486d164fafa2f1d9ca84899ff38a526d9e02e910751f87
[INFO] running `"docker" "start" "-a" "3e237dedc72d235b0a486d164fafa2f1d9ca84899ff38a526d9e02e910751f87"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling winapi v0.3.8
[INFO] [stderr]     Checking rerast_macros v0.1.12
[INFO] [stderr]    Compiling cgmath v0.16.1
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]     Checking float-cmp v0.4.0
[INFO] [stderr]     Checking predicates v1.0.1
[INFO] [stderr]     Checking winconsole v0.10.0
[INFO] [stderr]     Checking colored v1.8.0
[INFO] [stderr]     Checking rerast v0.1.73 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0463]: can't find crate for `rustc`
[INFO] [stderr]   --> src/lib.rs:77:1
[INFO] [stderr]    |
[INFO] [stderr] 77 | extern crate rustc;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error: could not compile `rerast`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "3e237dedc72d235b0a486d164fafa2f1d9ca84899ff38a526d9e02e910751f87"`
[INFO] running `"docker" "rm" "-f" "3e237dedc72d235b0a486d164fafa2f1d9ca84899ff38a526d9e02e910751f87"`
[INFO] [stdout] 3e237dedc72d235b0a486d164fafa2f1d9ca84899ff38a526d9e02e910751f87