[INFO] fetching crate smolapps 0.1.4...
[INFO] checking smolapps-0.1.4 against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] extracting crate smolapps 0.1.4 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate smolapps 0.1.4 on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate smolapps 0.1.4
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate smolapps 0.1.4
[INFO] tweaked toml for crates.io crate smolapps 0.1.4 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate smolapps 0.1.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4f984453ca26d9bf2d63219abc1b9d7215af2f44db34c0e1b68cb4118ea3001b
[INFO] running `Command { std: "docker" "start" "-a" "4f984453ca26d9bf2d63219abc1b9d7215af2f44db34c0e1b68cb4118ea3001b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4f984453ca26d9bf2d63219abc1b9d7215af2f44db34c0e1b68cb4118ea3001b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f984453ca26d9bf2d63219abc1b9d7215af2f44db34c0e1b68cb4118ea3001b", kill_on_drop: false }`
[INFO] [stdout] 4f984453ca26d9bf2d63219abc1b9d7215af2f44db34c0e1b68cb4118ea3001b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 976a5e20395013b0621ab5214c8ac4ab3816b8a0bd75a5991a46d505ea39440b
[INFO] running `Command { std: "docker" "start" "-a" "976a5e20395013b0621ab5214c8ac4ab3816b8a0bd75a5991a46d505ea39440b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.70
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking managed v0.7.1
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]     Checking smoltcp v0.6.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking smolapps v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] error: unknown `doc` attribute `shown`
[INFO] [stdout]   --> src/macros.rs:46:26
[INFO] [stdout]    |
[INFO] [stdout] 46 |                   $( #[doc(shown)] $variant = $value ),+
[INFO] [stdout]    |                            ^^^^^
[INFO] [stdout]    | 
[INFO] [stdout]   ::: src/wire/tftp.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | / enum_with_unknown! {
[INFO] [stdout] 13 | |     /// One of the possible operations supported by TFTP.
[INFO] [stdout] 14 | |     pub enum OpCode(u16) {
[INFO] [stdout] 15 | |         Read = 1,
[INFO] [stdout] ...  |
[INFO] [stdout] 20 | |     }
[INFO] [stdout] 21 | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 | #![deny(warnings)]
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    = note: `#[deny(invalid_doc_attributes)]` implied by `#[deny(warnings)]`
[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]    = 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]   --> src/macros.rs:46:26
[INFO] [stdout]    |
[INFO] [stdout] 46 |                   $( #[doc(shown)] $variant = $value ),+
[INFO] [stdout]    |                            ^^^^^
[INFO] [stdout]    | 
[INFO] [stdout]   ::: src/wire/tftp.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | / enum_with_unknown! {
[INFO] [stdout] 13 | |     /// One of the possible operations supported by TFTP.
[INFO] [stdout] 14 | |     pub enum OpCode(u16) {
[INFO] [stdout] 15 | |         Read = 1,
[INFO] [stdout] ...  |
[INFO] [stdout] 20 | |     }
[INFO] [stdout] 21 | | }
[INFO] [stdout]    | |_- in this macro invocation
[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]    = 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]   --> src/macros.rs:46:26
[INFO] [stdout]    |
[INFO] [stdout] 46 |                   $( #[doc(shown)] $variant = $value ),+
[INFO] [stdout]    |                            ^^^^^
[INFO] [stdout]    | 
[INFO] [stdout]   ::: src/wire/tftp.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | / enum_with_unknown! {
[INFO] [stdout] 24 | |     /// One of the possible error codes found in a TFTP error packet.
[INFO] [stdout] 25 | |     pub enum ErrorCode(u16) {
[INFO] [stdout] 26 | |         Undefined = 0,
[INFO] [stdout] ...  |
[INFO] [stdout] 34 | |     }
[INFO] [stdout] 35 | | }
[INFO] [stdout]    | |_- in this macro invocation
[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]    = 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 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `smolapps` due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "976a5e20395013b0621ab5214c8ac4ab3816b8a0bd75a5991a46d505ea39440b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "976a5e20395013b0621ab5214c8ac4ab3816b8a0bd75a5991a46d505ea39440b", kill_on_drop: false }`
[INFO] [stdout] 976a5e20395013b0621ab5214c8ac4ab3816b8a0bd75a5991a46d505ea39440b