[INFO] updating cached repository https://github.com/eonil/cargo-ipcgen-swift
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b93d463b5a0260aec9db5335d93579e36300f188
[INFO] checking eonil/cargo-ipcgen-swift against master#fdc0011561c6365c596dfd8fa1ef388162bc89c7 for pr-66504-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feonil%2Fcargo-ipcgen-swift" "/workspace/builds/worker-13/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/eonil/cargo-ipcgen-swift on toolchain fdc0011561c6365c596dfd8fa1ef388162bc89c7
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/eonil/cargo-ipcgen-swift
[INFO] finished tweaking git repo https://github.com/eonil/cargo-ipcgen-swift
[INFO] tweaked toml for git repo https://github.com/eonil/cargo-ipcgen-swift written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/eonil/cargo-ipcgen-swift already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "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] 4ece18955e7c69c537fa31c7dd2a52a7ec97012fd4315ef8f88e7d2e7889c84c
[INFO] running `"docker" "start" "-a" "4ece18955e7c69c537fa31c7dd2a52a7ec97012fd4315ef8f88e7d2e7889c84c"`
[INFO] [stderr]     Checking nibble_vec v0.0.4
[INFO] [stderr]    Compiling proc-macro2 v0.3.8
[INFO] [stderr]    Compiling rustc_version v0.2.2
[INFO] [stderr]     Checking rls-span v0.4.0
[INFO] [stderr]     Checking radix_trie v0.1.3
[INFO] [stderr]    Compiling extprim v1.6.0
[INFO] [stderr]     Checking rls-data v0.16.0
[INFO] [stderr]    Compiling quote v0.5.2
[INFO] [stderr]    Compiling syn v0.13.10
[INFO] [stderr]    Compiling serde_derive v1.0.55
[INFO] [stderr]    Compiling derive-new v0.5.4
[INFO] [stderr]     Checking rls-analysis v0.13.0
[INFO] [stderr]     Checking serde v1.0.55
[INFO] [stderr]     Checking syntex_pos v0.59.1
[INFO] [stderr]     Checking serde_json v1.0.17
[INFO] [stderr]     Checking syntex_errors v0.59.1
[INFO] [stderr]     Checking syntex_syntax v0.59.1
[INFO] [stderr]     Checking cargo-ipcgen-swift v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0463]: can't find crate for `rustc`
[INFO] [stderr]  --> src/main.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | 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 `cargo-ipcgen-swift`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0463]: can't find crate for `rustc`
[INFO] [stderr]  --> src/main.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | 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 `cargo-ipcgen-swift`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "4ece18955e7c69c537fa31c7dd2a52a7ec97012fd4315ef8f88e7d2e7889c84c"`
[INFO] running `"docker" "rm" "-f" "4ece18955e7c69c537fa31c7dd2a52a7ec97012fd4315ef8f88e7d2e7889c84c"`
[INFO] [stdout] 4ece18955e7c69c537fa31c7dd2a52a7ec97012fd4315ef8f88e7d2e7889c84c