[INFO] crate i-o 0.4.4 is already in cache
[INFO] documenting i-o-0.4.4 against try#66dfc4e010913fbed0c4ea91fc2c010004b0f441 for pr-73566
[INFO] extracting crate i-o 0.4.4 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate i-o 0.4.4 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 i-o 0.4.4
[INFO] finished tweaking crates.io crate i-o 0.4.4
[INFO] tweaked toml for crates.io crate i-o 0.4.4 written to /workspace/builds/worker-4/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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 6e285c2e130a3b163dca36bfacd31f4816dbb1217492e3aeecdbed451e651aa1
[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" "6e285c2e130a3b163dca36bfacd31f4816dbb1217492e3aeecdbed451e651aa1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6e285c2e130a3b163dca36bfacd31f4816dbb1217492e3aeecdbed451e651aa1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e285c2e130a3b163dca36bfacd31f4816dbb1217492e3aeecdbed451e651aa1", kill_on_drop: false }`
[INFO] [stdout] 6e285c2e130a3b163dca36bfacd31f4816dbb1217492e3aeecdbed451e651aa1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 1912bdee7640de8872140d082f741e4b25d70c1bc5f98b03d6e5335a8735f7cf
[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" "1912bdee7640de8872140d082f741e4b25d70c1bc5f98b03d6e5335a8735f7cf", kill_on_drop: false }`
[INFO] [stderr]    Compiling ptr v0.2.1
[INFO] [stderr]    Compiling hash-table v0.2.3
[INFO] [stderr]     Checking siphasher v0.2.3
[INFO] [stderr]    Compiling containers v0.9.6
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]    Compiling i-o v0.4.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rel v0.2.0
[INFO] [stderr]     Checking heap v0.1.0
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking fallible v0.1.3
[INFO] [stderr]     Checking loca v0.7.2
[INFO] [stderr]     Checking default_allocator v0.3.0
[INFO] [stderr]  Documenting i-o v0.4.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: The usage of Script Group `Greek` in this crate consists solely of mixed script confusables
[INFO] [stdout]    --> src/lib.rs:119:16
[INFO] [stdout]     |
[INFO] [stdout] 119 |         Split{ φ: PhantomData, r: self, p, buf: Some(Vec::new()), keep_delim }
[INFO] [stdout]     |                ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mixed_script_confusables)]` on by default
[INFO] [stdout]     = note: The usage includes 'φ' (U+03C6).
[INFO] [stdout]     = note: Please recheck to make sure their usages are indeed what you want.
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.81s
[INFO] running `Command { std: "docker" "inspect" "1912bdee7640de8872140d082f741e4b25d70c1bc5f98b03d6e5335a8735f7cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1912bdee7640de8872140d082f741e4b25d70c1bc5f98b03d6e5335a8735f7cf", kill_on_drop: false }`
[INFO] [stdout] 1912bdee7640de8872140d082f741e4b25d70c1bc5f98b03d6e5335a8735f7cf