[INFO] fetching crate c2-chacha 0.2.4...
[INFO] checking c2-chacha-0.2.4 against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] extracting crate c2-chacha 0.2.4 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate c2-chacha 0.2.4 on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate c2-chacha 0.2.4
[INFO] finished tweaking crates.io crate c2-chacha 0.2.4
[INFO] tweaked toml for crates.io crate c2-chacha 0.2.4 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bc476c2ffa3f1434d813c37dd4fdf6773e9c5e78ca4ffd7391b864a22480ba31
[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" "bc476c2ffa3f1434d813c37dd4fdf6773e9c5e78ca4ffd7391b864a22480ba31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bc476c2ffa3f1434d813c37dd4fdf6773e9c5e78ca4ffd7391b864a22480ba31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc476c2ffa3f1434d813c37dd4fdf6773e9c5e78ca4ffd7391b864a22480ba31", kill_on_drop: false }`
[INFO] [stdout] bc476c2ffa3f1434d813c37dd4fdf6773e9c5e78ca4ffd7391b864a22480ba31
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0e36306f03b2a4d24bb5d745edffd0a9355be6157ce5c756a3f747108bc09312
[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" "0e36306f03b2a4d24bb5d745edffd0a9355be6157ce5c756a3f747108bc09312", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro-hack v0.5.18
[INFO] [stderr]     Checking ppv-lite86 v0.2.9
[INFO] [stderr]     Checking stream-cipher v0.3.2
[INFO] [stderr]     Checking c2-chacha v0.2.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/guts.rs:258:1
[INFO] [stdout]     |
[INFO] [stdout] 258 | /// Refill the buffer from a single-block round, updating the block count.
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/guts.rs:273:1
[INFO] [stdout]     |
[INFO] [stdout] 273 | /// Single-block, rounds-only; shared by try_apply_keystream for tails shorter than BUFSZ
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stdout]     |
[INFO] [stdout]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/guts.rs:274:1
[INFO] [stdout]     |
[INFO] [stdout] 274 | /// and XChaCha's setup step.
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stdout]     |
[INFO] [stdout]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling hex-literal-impl v0.2.2
[INFO] [stderr]     Checking hex-literal v0.2.1
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/guts.rs:258:1
[INFO] [stdout]     |
[INFO] [stdout] 258 | /// Refill the buffer from a single-block round, updating the block count.
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/guts.rs:273:1
[INFO] [stdout]     |
[INFO] [stdout] 273 | /// Single-block, rounds-only; shared by try_apply_keystream for tails shorter than BUFSZ
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stdout]     |
[INFO] [stdout]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/guts.rs:274:1
[INFO] [stdout]     |
[INFO] [stdout] 274 | /// and XChaCha's setup step.
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stdout]     |
[INFO] [stdout]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.45s
[INFO] running `Command { std: "docker" "inspect" "0e36306f03b2a4d24bb5d745edffd0a9355be6157ce5c756a3f747108bc09312", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e36306f03b2a4d24bb5d745edffd0a9355be6157ce5c756a3f747108bc09312", kill_on_drop: false }`
[INFO] [stdout] 0e36306f03b2a4d24bb5d745edffd0a9355be6157ce5c756a3f747108bc09312