[INFO] fetching crate mdmatter 0.0.1...
[INFO] checking mdmatter-0.0.1 against master#c5fbcd35a8217a17f6b63a22217ace06cf8f5f02 for pr-86194
[INFO] extracting crate mdmatter 0.0.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate mdmatter 0.0.1 on toolchain c5fbcd35a8217a17f6b63a22217ace06cf8f5f02
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mdmatter 0.0.1
[INFO] finished tweaking crates.io crate mdmatter 0.0.1
[INFO] tweaked toml for crates.io crate mdmatter 0.0.1 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0035fa6668581af08c27d7a40bb8d4cf8195e4eb48a435c77d485c95479c6c8f
[INFO] running `Command { std: "docker" "start" "-a" "0035fa6668581af08c27d7a40bb8d4cf8195e4eb48a435c77d485c95479c6c8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0035fa6668581af08c27d7a40bb8d4cf8195e4eb48a435c77d485c95479c6c8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0035fa6668581af08c27d7a40bb8d4cf8195e4eb48a435c77d485c95479c6c8f", kill_on_drop: false }`
[INFO] [stdout] 0035fa6668581af08c27d7a40bb8d4cf8195e4eb48a435c77d485c95479c6c8f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a5c7a47e0bdaf04c526fc41547e2b25e567c7d41d5a8fa0f7c17fd18faccb5fb
[INFO] running `Command { std: "docker" "start" "-a" "a5c7a47e0bdaf04c526fc41547e2b25e567c7d41d5a8fa0f7c17fd18faccb5fb", kill_on_drop: false }`
[INFO] [stderr]     Checking nom v1.2.4
[INFO] [stderr]    Compiling stainless v0.1.12
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stainless-0.1.12/src/lib.rs:7:30
[INFO] [stdout]   |
[INFO] [stdout] 7 | #![feature(plugin_registrar, quote, rustc_private)]
[INFO] [stdout]   |                              ^^^^^ feature has been removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `syntax`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/stainless-0.1.12/src/lib.rs:171:1
[INFO] [stdout]     |
[INFO] [stdout] 171 | extern crate syntax;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0463, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `stainless`
[INFO] [stderr] 
[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" "a5c7a47e0bdaf04c526fc41547e2b25e567c7d41d5a8fa0f7c17fd18faccb5fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5c7a47e0bdaf04c526fc41547e2b25e567c7d41d5a8fa0f7c17fd18faccb5fb", kill_on_drop: false }`
[INFO] [stdout] a5c7a47e0bdaf04c526fc41547e2b25e567c7d41d5a8fa0f7c17fd18faccb5fb