[INFO] fetching crate rcmath 0.0.1...
[INFO] documenting rcmath-0.0.1 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate rcmath 0.0.1 into /workspace/builds/worker-19/source
[INFO] validating manifest of crates.io crate rcmath 0.0.1 on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rcmath 0.0.1
[INFO] finished tweaking crates.io crate rcmath 0.0.1
[INFO] tweaked toml for crates.io crate rcmath 0.0.1 written to /workspace/builds/worker-19/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ec5ef111127975889a80b279844115795b44a538546c3c8abcea29f48c2b4b43
[INFO] running `Command { std: "docker" "start" "-a" "ec5ef111127975889a80b279844115795b44a538546c3c8abcea29f48c2b4b43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ec5ef111127975889a80b279844115795b44a538546c3c8abcea29f48c2b4b43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec5ef111127975889a80b279844115795b44a538546c3c8abcea29f48c2b4b43", kill_on_drop: false }`
[INFO] [stdout] ec5ef111127975889a80b279844115795b44a538546c3c8abcea29f48c2b4b43
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 978cff4008e82206241e976867809ffb9ac2f908fc7924e6f68deef3502c322e
[INFO] running `Command { std: "docker" "start" "-a" "978cff4008e82206241e976867809ffb9ac2f908fc7924e6f68deef3502c322e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]  Documenting rcmath v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0407]: method `add_usize` is not a member of trait `Step`
[INFO] [stdout]    --> src/big_num.rs:413:5
[INFO] [stdout]     |
[INFO] [stdout] 413 | /     fn add_usize(&self, n: usize) -> Option<BigNum> {
[INFO] [stdout] 414 | |         Some(self.add_usize(n))
[INFO] [stdout] 415 | |     }
[INFO] [stdout]     | |_____^ not a member of trait `Step`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0407]: method `replace_one` is not a member of trait `Step`
[INFO] [stdout]    --> src/big_num.rs:417:5
[INFO] [stdout]     |
[INFO] [stdout] 417 | /     fn replace_one(&mut self) -> BigNum {
[INFO] [stdout] 418 | |         self.clone()
[INFO] [stdout] 419 | |     }
[INFO] [stdout]     | |_____^ not a member of trait `Step`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0407]: method `replace_zero` is not a member of trait `Step`
[INFO] [stdout]    --> src/big_num.rs:421:5
[INFO] [stdout]     |
[INFO] [stdout] 421 | /     fn replace_zero(&mut self) -> BigNum {
[INFO] [stdout] 422 | |         self.clone()
[INFO] [stdout] 423 | |     }
[INFO] [stdout]     | |_____^ not a member of trait `Step`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0407]: method `add_one` is not a member of trait `Step`
[INFO] [stdout]    --> src/big_num.rs:425:5
[INFO] [stdout]     |
[INFO] [stdout] 425 | /     fn add_one(&self) -> BigNum {
[INFO] [stdout] 426 | |         self.clone() + BigNum::new_one()
[INFO] [stdout] 427 | |     }
[INFO] [stdout]     | |_____^ not a member of trait `Step`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0407]: method `sub_one` is not a member of trait `Step`
[INFO] [stdout]    --> src/big_num.rs:429:5
[INFO] [stdout]     |
[INFO] [stdout] 429 | /     fn sub_one(&self) -> BigNum {
[INFO] [stdout] 430 | |         self.clone() - BigNum::new_one()
[INFO] [stdout] 431 | |     }
[INFO] [stdout]     | |_____^ not a member of trait `Step`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/big_num.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |         (BigNum::new_empty()..self.clone())
[INFO] [stdout]    |         ^                                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 58 -         (BigNum::new_empty()..self.clone())
[INFO] [stdout] 58 +         BigNum::new_empty()..self.clone()
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0407`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `rcmath`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name rcmath src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=dfd7be865c91cd4a -L dependency=/opt/rustwide/target/debug/deps --extern num_bigint=/opt/rustwide/target/debug/deps/libnum_bigint-1cfdb475b89039c1.rmeta --cap-lints=warn --crate-version 0.0.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "978cff4008e82206241e976867809ffb9ac2f908fc7924e6f68deef3502c322e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "978cff4008e82206241e976867809ffb9ac2f908fc7924e6f68deef3502c322e", kill_on_drop: false }`
[INFO] [stdout] 978cff4008e82206241e976867809ffb9ac2f908fc7924e6f68deef3502c322e