[INFO] fetching crate token 1.0.0-rc1...
[INFO] documenting token-1.0.0-rc1 against try#66dfc4e010913fbed0c4ea91fc2c010004b0f441 for pr-73566
[INFO] extracting crate token 1.0.0-rc1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate token 1.0.0-rc1 on toolchain 66dfc4e010913fbed0c4ea91fc2c010004b0f441
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate token 1.0.0-rc1
[INFO] finished tweaking crates.io crate token 1.0.0-rc1
[INFO] tweaked toml for crates.io crate token 1.0.0-rc1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9ddcd42e4613145a3835a6f829f758a4c088b55fc99809b9e74fe7507f145b9a
[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" "9ddcd42e4613145a3835a6f829f758a4c088b55fc99809b9e74fe7507f145b9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9ddcd42e4613145a3835a6f829f758a4c088b55fc99809b9e74fe7507f145b9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ddcd42e4613145a3835a6f829f758a4c088b55fc99809b9e74fe7507f145b9a", kill_on_drop: false }`
[INFO] [stdout] 9ddcd42e4613145a3835a6f829f758a4c088b55fc99809b9e74fe7507f145b9a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 67b13144b52601424fc8b852cc9e1004f5336eb44244fd2d632e2fe2a9489d7c
[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" "67b13144b52601424fc8b852cc9e1004f5336eb44244fd2d632e2fe2a9489d7c", kill_on_drop: false }`
[INFO] [stderr]  Documenting token v1.0.0-rc1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `std::io::ReadExt`
[INFO] [stdout]   --> src/lib.rs:50:21
[INFO] [stdout]    |
[INFO] [stdout] 50 | use std::io::{Read, ReadExt};
[INFO] [stdout]    |                     ^^^^^^^ no `ReadExt` in `io`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Chars` in module `io`
[INFO] [stdout]   --> src/lib.rs:57:16
[INFO] [stdout]    |
[INFO] [stdout] 57 |     chars: io::Chars<R>,
[INFO] [stdout]    |                ^^^^^ not found in `io`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 47 | use std::str::Chars;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `CharsError` in module `io`
[INFO] [stdout]   --> src/lib.rs:83:37
[INFO] [stdout]    |
[INFO] [stdout] 83 |     type Item = Result<&'a str, io::CharsError>;
[INFO] [stdout]    |                                     ^^^^^^^^^^ not found in `io`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `CharsError` in module `io`
[INFO] [stdout]   --> src/lib.rs:87:51
[INFO] [stdout]    |
[INFO] [stdout] 87 |     fn next(&mut self) -> Option<Result<&str, io::CharsError>> {
[INFO] [stdout]    |                                                   ^^^^^^^^^^ not found in `io`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `CharsError` in module `io`
[INFO] [stdout]    --> src/lib.rs:175:37
[INFO] [stdout]     |
[INFO] [stdout] 175 |     type Item = Result<&'b str, io::CharsError>;
[INFO] [stdout]     |                                     ^^^^^^^^^^ not found in `io`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `CharsError` in module `io`
[INFO] [stdout]    --> src/lib.rs:178:51
[INFO] [stdout]     |
[INFO] [stdout] 178 |     fn next(&mut self) -> Option<Result<&str, io::CharsError>> {
[INFO] [stdout]     |                                                   ^^^^^^^^^^ not found in `io`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 7 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0412, E0432.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0412`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `token`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name token 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" "67b13144b52601424fc8b852cc9e1004f5336eb44244fd2d632e2fe2a9489d7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67b13144b52601424fc8b852cc9e1004f5336eb44244fd2d632e2fe2a9489d7c", kill_on_drop: false }`
[INFO] [stdout] 67b13144b52601424fc8b852cc9e1004f5336eb44244fd2d632e2fe2a9489d7c