[INFO] fetching crate big-hash 0.2.0...
[INFO] checking big-hash-0.2.0 against try#99a443d6903f71d521237d8acb5a3016b534d17b for pr-83354
[INFO] extracting crate big-hash 0.2.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate big-hash 0.2.0 on toolchain 99a443d6903f71d521237d8acb5a3016b534d17b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate big-hash 0.2.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate big-hash 0.2.0
[INFO] tweaked toml for crates.io crate big-hash 0.2.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate big-hash 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded hmac-sha256 v0.1.2
[INFO] [stderr]   Downloaded hmac-sha512 v0.1.6
[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" "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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0c8c41163a04ca587b6061d30f98e2b7a9d00e8fc1124378dd457cb4822927c9
[INFO] running `Command { std: "docker" "start" "-a" "0c8c41163a04ca587b6061d30f98e2b7a9d00e8fc1124378dd457cb4822927c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0c8c41163a04ca587b6061d30f98e2b7a9d00e8fc1124378dd457cb4822927c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c8c41163a04ca587b6061d30f98e2b7a9d00e8fc1124378dd457cb4822927c9", kill_on_drop: false }`
[INFO] [stdout] 0c8c41163a04ca587b6061d30f98e2b7a9d00e8fc1124378dd457cb4822927c9
[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" "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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b6971b9962faa109576ff79652d87eb0e0a822f7d2197cc3960963f6e7349986
[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" "b6971b9962faa109576ff79652d87eb0e0a822f7d2197cc3960963f6e7349986", kill_on_drop: false }`
[INFO] [stderr]     Checking md5 v0.7.0
[INFO] [stderr]     Checking hmac-sha256 v0.1.2
[INFO] [stderr]     Checking hmac-sha512 v0.1.6
[INFO] [stderr]     Checking big-hash v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unknown `doc` attribute `opaque`
[INFO] [stdout]   --> src/lib.rs:36:7
[INFO] [stdout]    |
[INFO] [stdout] 36 | #[doc(opaque)]
[INFO] [stdout]    |       ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(invalid_doc_attributes)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #82730 <https://github.com/rust-lang/rust/issues/82730>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unknown `doc` attribute `opaque`
[INFO] [stdout]   --> src/lib.rs:48:7
[INFO] [stdout]    |
[INFO] [stdout] 48 | #[doc(opaque)]
[INFO] [stdout]    |       ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #82730 <https://github.com/rust-lang/rust/issues/82730>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unknown `doc` attribute `opaque`
[INFO] [stdout]   --> src/lib.rs:60:7
[INFO] [stdout]    |
[INFO] [stdout] 60 | #[doc(opaque)]
[INFO] [stdout]    |       ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #82730 <https://github.com/rust-lang/rust/issues/82730>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unknown `doc` attribute `opaque`
[INFO] [stdout]   --> src/lib.rs:36:7
[INFO] [stdout]    |
[INFO] [stdout] 36 | #[doc(opaque)]
[INFO] [stdout]    |       ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(invalid_doc_attributes)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #82730 <https://github.com/rust-lang/rust/issues/82730>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unknown `doc` attribute `opaque`
[INFO] [stdout]   --> src/lib.rs:48:7
[INFO] [stdout]    |
[INFO] [stdout] 48 | #[doc(opaque)]
[INFO] [stdout]    |       ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #82730 <https://github.com/rust-lang/rust/issues/82730>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unknown `doc` attribute `opaque`
[INFO] [stdout]   --> src/lib.rs:60:7
[INFO] [stdout]    |
[INFO] [stdout] 60 | #[doc(opaque)]
[INFO] [stdout]    |       ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #82730 <https://github.com/rust-lang/rust/issues/82730>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.48s
[INFO] running `Command { std: "docker" "inspect" "b6971b9962faa109576ff79652d87eb0e0a822f7d2197cc3960963f6e7349986", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6971b9962faa109576ff79652d87eb0e0a822f7d2197cc3960963f6e7349986", kill_on_drop: false }`
[INFO] [stdout] b6971b9962faa109576ff79652d87eb0e0a822f7d2197cc3960963f6e7349986