[INFO] fetching crate expr 0.0.1...
[INFO] documenting expr-0.0.1 against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] extracting crate expr 0.0.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate expr 0.0.1 on toolchain 394e1b40d264aa6928811919c1124fa248e7d802
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate expr 0.0.1
[INFO] finished tweaking crates.io crate expr 0.0.1
[INFO] tweaked toml for crates.io crate expr 0.0.1 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 779821aadf01ab5751d7e460f8902cfb11d5bfb42f9cd6054a370c20e8ae106c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "779821aadf01ab5751d7e460f8902cfb11d5bfb42f9cd6054a370c20e8ae106c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "779821aadf01ab5751d7e460f8902cfb11d5bfb42f9cd6054a370c20e8ae106c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "779821aadf01ab5751d7e460f8902cfb11d5bfb42f9cd6054a370c20e8ae106c", kill_on_drop: false }`
[INFO] [stdout] 779821aadf01ab5751d7e460f8902cfb11d5bfb42f9cd6054a370c20e8ae106c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "RUSTDOCFLAGS=--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@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ba046469415b96a7c18ba38f6cae3b8f02692655f6f88b5d0e42538f03673498
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ba046469415b96a7c18ba38f6cae3b8f02692655f6f88b5d0e42538f03673498", kill_on_drop: false }`
[INFO] [stderr]  Documenting expr v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: expected expression, found `]`
[INFO] [stdout]    --> src/expr.rs:163:12
[INFO] [stdout]     |
[INFO] [stdout] 163 |         if token[].contains(".") {
[INFO] [stdout]     |                  ^ expected expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected type, found `|`
[INFO] [stdout]    --> src/expr.rs:317:37
[INFO] [stdout]     |
[INFO] [stdout] 317 |     pub fn set_variables(&mut self, f: |&str| -> Val<T>) {
[INFO] [stdout]     |                                        ^ expected type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected expression, found `]`
[INFO] [stdout]    --> src/expr.rs:319:39
[INFO] [stdout]     |
[INFO] [stdout] 319 |             self.variables[*idx] = Some(f(name[]));
[INFO] [stdout]     |                                                ^ expected expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `regex`
[INFO] [stdout]  --> src/lib.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | extern crate regex;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `expr`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name expr src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --cap-lints=forbid` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "ba046469415b96a7c18ba38f6cae3b8f02692655f6f88b5d0e42538f03673498", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba046469415b96a7c18ba38f6cae3b8f02692655f6f88b5d0e42538f03673498", kill_on_drop: false }`
[INFO] [stdout] ba046469415b96a7c18ba38f6cae3b8f02692655f6f88b5d0e42538f03673498