[INFO] cloning repository https://github.com/nealfennimore/rust-intro
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nealfennimore/rust-intro" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnealfennimore%2Frust-intro", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnealfennimore%2Frust-intro'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d217d8426ecedc382ed03537e249b1da1ecb186b
[INFO] checking nealfennimore/rust-intro against try#590af02d982816cfb2e4e43f8c54065e816581ce for pr-111505
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnealfennimore%2Frust-intro" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nealfennimore/rust-intro 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 git repo https://github.com/nealfennimore/rust-intro
[INFO] finished tweaking git repo https://github.com/nealfennimore/rust-intro
[INFO] tweaked toml for git repo https://github.com/nealfennimore/rust-intro written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/nealfennimore/rust-intro 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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] a7509940447bae77e24c775183bcba82675e634cd30d405dbb6314c55a8c8258
[INFO] running `Command { std: "docker" "start" "-a" "a7509940447bae77e24c775183bcba82675e634cd30d405dbb6314c55a8c8258", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a7509940447bae77e24c775183bcba82675e634cd30d405dbb6314c55a8c8258", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7509940447bae77e24c775183bcba82675e634cd30d405dbb6314c55a8c8258", kill_on_drop: false }`
[INFO] [stdout] a7509940447bae77e24c775183bcba82675e634cd30d405dbb6314c55a8c8258
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 180d845b2d75f8371a591582715cb15486aeba123ccbcd8f20abcb85b480f5e9
[INFO] running `Command { std: "docker" "start" "-a" "180d845b2d75f8371a591582715cb15486aeba123ccbcd8f20abcb85b480f5e9", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.13
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking managed v0.7.2
[INFO] [stderr]     Checking byteorder v1.4.2
[INFO] [stderr]     Checking smoltcp v0.7.0
[INFO] [stdout] error: unknown `doc` attribute `shown`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/smoltcp-0.7.0/src/macros.rs:32:26
[INFO] [stdout]    |
[INFO] [stdout] 32 |                   $( #[doc(shown)] $variant = $value ),+
[INFO] [stdout]    |                            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/smoltcp-0.7.0/src/wire/ethernet.rs:6:1
[INFO] [stdout]    |
[INFO] [stdout] 6  | / enum_with_unknown! {
[INFO] [stdout] 7  | |     /// Ethernet protocol type.
[INFO] [stdout] 8  | |     pub enum EtherType(u16) {
[INFO] [stdout] 9  | |         Ipv4 = 0x0800,
[INFO] [stdout] ...  |
[INFO] [stdout] 12 | |     }
[INFO] [stdout] 13 | | }
[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] [stdout] error: unknown `doc` attribute `shown`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/smoltcp-0.7.0/src/macros.rs:32:26
[INFO] [stdout]    |
[INFO] [stdout] 32 |                   $( #[doc(shown)] $variant = $value ),+
[INFO] [stdout]    |                            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/smoltcp-0.7.0/src/wire/arp.rs:8:1
[INFO] [stdout]    |
[INFO] [stdout] 8  | / enum_with_unknown! {
[INFO] [stdout] 9  | |     /// ARP hardware type.
[INFO] [stdout] 10 | |     pub enum Hardware(u16) {
[INFO] [stdout] 11 | |         Ethernet = 1
[INFO] [stdout] 12 | |     }
[INFO] [stdout] 13 | | }
[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] [stdout] error: unknown `doc` attribute `shown`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/smoltcp-0.7.0/src/macros.rs:32:26
[INFO] [stdout]    |
[INFO] [stdout] 32 |                   $( #[doc(shown)] $variant = $value ),+
[INFO] [stdout]    |                            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/smoltcp-0.7.0/src/wire/arp.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | / enum_with_unknown! {
[INFO] [stdout] 16 | |     /// ARP operation type.
[INFO] [stdout] 17 | |     pub enum Operation(u16) {
[INFO] [stdout] 18 | |         Request = 1,
[INFO] [stdout] 19 | |         Reply = 2
[INFO] [stdout] 20 | |     }
[INFO] [stdout] 21 | | }
[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] [stdout] error: unknown `doc` attribute `shown`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/smoltcp-0.7.0/src/macros.rs:32:26
[INFO] [stdout]    |
[INFO] [stdout] 32 |                   $( #[doc(shown)] $variant = $value ),+
[INFO] [stdout]    |                            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/smoltcp-0.7.0/src/wire/ip.rs:50:1
[INFO] [stdout]    |
[INFO] [stdout] 50 | / enum_with_unknown! {
[INFO] [stdout] 51 | |     /// IP datagram encapsulated protocol.
[INFO] [stdout] 52 | |     pub enum Protocol(u8) {
[INFO] [stdout] 53 | |         HopByHop  = 0x00,
[INFO] [stdout] ...  |
[INFO] [stdout] 63 | |     }
[INFO] [stdout] 64 | | }
[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] [stdout] error: unknown `doc` attribute `shown`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/smoltcp-0.7.0/src/macros.rs:32:26
[INFO] [stdout]    |
[INFO] [stdout] 32 |                   $( #[doc(shown)] $variant = $value ),+
[INFO] [stdout]    |                            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/smoltcp-0.7.0/src/wire/dhcpv4.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | / enum_with_unknown! {
[INFO] [stdout] 12 | |     /// The possible opcodes of a DHCP packet.
[INFO] [stdout] 13 | |     pub enum OpCode(u8) {
[INFO] [stdout] 14 | |         Request = 1,
[INFO] [stdout] 15 | |         Reply = 2,
[INFO] [stdout] 16 | |     }
[INFO] [stdout] 17 | | }
[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] [stdout] error: unknown `doc` attribute `shown`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/smoltcp-0.7.0/src/macros.rs:32:26
[INFO] [stdout]    |
[INFO] [stdout] 32 |                   $( #[doc(shown)] $variant = $value ),+
[INFO] [stdout]    |                            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/smoltcp-0.7.0/src/wire/dhcpv4.rs:19:1
[INFO] [stdout]    |
[INFO] [stdout] 19 | / enum_with_unknown! {
[INFO] [stdout] 20 | |     /// The possible message types of a DHCP packet.
[INFO] [stdout] 21 | |     pub enum MessageType(u8) {
[INFO] [stdout] 22 | |         Discover = 1,
[INFO] [stdout] ...  |
[INFO] [stdout] 30 | |     }
[INFO] [stdout] 31 | | }
[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] [stdout] error: aborting due to 6 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `smoltcp` (lib) due to 7 previous errors; 4 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "180d845b2d75f8371a591582715cb15486aeba123ccbcd8f20abcb85b480f5e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "180d845b2d75f8371a591582715cb15486aeba123ccbcd8f20abcb85b480f5e9", kill_on_drop: false }`
[INFO] [stdout] 180d845b2d75f8371a591582715cb15486aeba123ccbcd8f20abcb85b480f5e9