[INFO] fetching crate cargo-ipcgen-swift 0.0.1...
[INFO] testing cargo-ipcgen-swift-0.0.1 against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] extracting crate cargo-ipcgen-swift 0.0.1 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate cargo-ipcgen-swift 0.0.1 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] started tweaking crates.io crate cargo-ipcgen-swift 0.0.1
[INFO] finished tweaking crates.io crate cargo-ipcgen-swift 0.0.1
[INFO] tweaked toml for crates.io crate cargo-ipcgen-swift 0.0.1 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded syntex_syntax v0.59.1
[INFO] [stderr]   Downloaded syntex_pos v0.59.1
[INFO] [stderr]   Downloaded extprim v1.7.1
[INFO] [stderr]   Downloaded radix_trie v0.1.6
[INFO] [stderr]   Downloaded syntex_errors v0.59.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] d1d2cb217bbc39341a4a13620f7c1f4b5391b1efec9b944c28232bd78102ad0f
[INFO] running `Command { std: "docker" "start" "-a" "d1d2cb217bbc39341a4a13620f7c1f4b5391b1efec9b944c28232bd78102ad0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d1d2cb217bbc39341a4a13620f7c1f4b5391b1efec9b944c28232bd78102ad0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1d2cb217bbc39341a4a13620f7c1f4b5391b1efec9b944c28232bd78102ad0f", kill_on_drop: false }`
[INFO] [stdout] d1d2cb217bbc39341a4a13620f7c1f4b5391b1efec9b944c28232bd78102ad0f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] f690d07a9ada4ac2cb1402614d09bcae9b4a87e104a98259242afba0f34d43a9
[INFO] running `Command { std: "docker" "start" "-a" "f690d07a9ada4ac2cb1402614d09bcae9b4a87e104a98259242afba0f34d43a9", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling nibble_vec v0.0.4
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling rls-span v0.4.1
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling derive-new v0.5.9
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling rls-data v0.16.0
[INFO] [stderr]    Compiling radix_trie v0.1.6
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling extprim v1.7.1
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling rls-analysis v0.13.0
[INFO] [stderr]    Compiling syntex_pos v0.59.1
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/extprim-1.7.1/src/lib.rs:58:81
[INFO] [stdout]    |
[INFO] [stdout] 58 | #![cfg_attr(extprim_channel="unstable", feature(llvm_asm, test, specialization, const_fn))]
[INFO] [stdout]    |                                                                                 ^^^^^^^^ feature has been removed
[INFO] [stdout]    |
[INFO] [stdout]    = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `extprim`
[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 E0557`.
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "f690d07a9ada4ac2cb1402614d09bcae9b4a87e104a98259242afba0f34d43a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f690d07a9ada4ac2cb1402614d09bcae9b4a87e104a98259242afba0f34d43a9", kill_on_drop: false }`
[INFO] [stdout] f690d07a9ada4ac2cb1402614d09bcae9b4a87e104a98259242afba0f34d43a9