[INFO] fetching crate smolapps 0.1.4...
[INFO] checking smolapps-0.1.4 against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744
[INFO] extracting crate smolapps 0.1.4 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate smolapps 0.1.4 on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "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-7/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" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded managed v0.7.1
[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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "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] 24a9f93cc0742ec0d6304b156cab824c503d53e6ab173b9dc7e864264fa219aa
[INFO] running `Command { std: "docker" "start" "-a" "24a9f93cc0742ec0d6304b156cab824c503d53e6ab173b9dc7e864264fa219aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "24a9f93cc0742ec0d6304b156cab824c503d53e6ab173b9dc7e864264fa219aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24a9f93cc0742ec0d6304b156cab824c503d53e6ab173b9dc7e864264fa219aa", kill_on_drop: false }`
[INFO] [stdout] 24a9f93cc0742ec0d6304b156cab824c503d53e6ab173b9dc7e864264fa219aa
[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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ccf29e582b0cf4eda5ffe2aee16cb8026461d04457225c95529ff05c50cc599a
[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" "ccf29e582b0cf4eda5ffe2aee16cb8026461d04457225c95529ff05c50cc599a", 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 byteorder v1.3.4
[INFO] [stderr]     Checking lazy_static v1.4.0
[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 cfg-if v0.1.10
[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 aho-corasick v0.7.10
[INFO] [stderr]     Checking smoltcp v0.6.0
[INFO] [stderr]     Checking atty v0.2.14
[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 a macro (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 a macro (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 a macro (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`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "ccf29e582b0cf4eda5ffe2aee16cb8026461d04457225c95529ff05c50cc599a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ccf29e582b0cf4eda5ffe2aee16cb8026461d04457225c95529ff05c50cc599a", kill_on_drop: false }`
[INFO] [stdout] ccf29e582b0cf4eda5ffe2aee16cb8026461d04457225c95529ff05c50cc599a