[INFO] fetching crate sntp 0.1.2...
[INFO] checking sntp-0.1.2 against try#590af02d982816cfb2e4e43f8c54065e816581ce for pr-111505
[INFO] extracting crate sntp 0.1.2 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate sntp 0.1.2 on toolchain 590af02d982816cfb2e4e43f8c54065e816581ce
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+590af02d982816cfb2e4e43f8c54065e816581ce" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sntp 0.1.2
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate sntp 0.1.2
[INFO] tweaked toml for crates.io crate sntp 0.1.2 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate crates.io crate sntp 0.1.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+590af02d982816cfb2e4e43f8c54065e816581ce" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+590af02d982816cfb2e4e43f8c54065e816581ce" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b388ec4f79878ac4496bd91236ce7038267e77367ca82abb0736f90afb385fd6
[INFO] running `Command { std: "docker" "start" "-a" "b388ec4f79878ac4496bd91236ce7038267e77367ca82abb0736f90afb385fd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b388ec4f79878ac4496bd91236ce7038267e77367ca82abb0736f90afb385fd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b388ec4f79878ac4496bd91236ce7038267e77367ca82abb0736f90afb385fd6", kill_on_drop: false }`
[INFO] [stdout] b388ec4f79878ac4496bd91236ce7038267e77367ca82abb0736f90afb385fd6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+590af02d982816cfb2e4e43f8c54065e816581ce" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bdbc4e35ff07e2d577ffe0558190d37ba0249a27aec3b5da88d2bb0f3d495fd9
[INFO] running `Command { std: "docker" "start" "-a" "bdbc4e35ff07e2d577ffe0558190d37ba0249a27aec3b5da88d2bb0f3d495fd9", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling libc v0.2.70
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking managed v0.7.1
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking smoltcp v0.6.0
[INFO] [stdout] error: unknown `doc` attribute `shown`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/smoltcp-0.6.0/src/macros.rs:36:26
[INFO] [stdout]    |
[INFO] [stdout] 36 |                   $( #[doc(shown)] $variant = $value ),+
[INFO] [stdout]    |                            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/smoltcp-0.6.0/src/wire/ip.rs:52:1
[INFO] [stdout]    |
[INFO] [stdout] 52 | / enum_with_unknown! {
[INFO] [stdout] 53 | |     /// IP datagram encapsulated protocol.
[INFO] [stdout] 54 | |     pub enum Protocol(u8) {
[INFO] [stdout] 55 | |         HopByHop  = 0x00,
[INFO] [stdout] ...  |
[INFO] [stdout] 65 | |     }
[INFO] [stdout] 66 | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `enum_with_unknown` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `smoltcp` (lib) due to 2 previous errors; 4 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "bdbc4e35ff07e2d577ffe0558190d37ba0249a27aec3b5da88d2bb0f3d495fd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bdbc4e35ff07e2d577ffe0558190d37ba0249a27aec3b5da88d2bb0f3d495fd9", kill_on_drop: false }`
[INFO] [stdout] bdbc4e35ff07e2d577ffe0558190d37ba0249a27aec3b5da88d2bb0f3d495fd9