[INFO] updating cached repository https://github.com/robot-head/led_dash
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2d6066796182b919cddbabb9f7a854ac1eefab0b
[INFO] checking robot-head/led_dash against master#4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb for pr-64672
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Frobot-head%2Fled_dash" "work/builds/worker-7/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/robot-head/led_dash on toolchain 4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/robot-head/led_dash
[INFO] finished tweaking git repo https://github.com/robot-head/led_dash
[INFO] tweaked toml for git repo https://github.com/robot-head/led_dash written to work/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/robot-head/led_dash already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 2ad9b0ab3928c40a72e30c4482c735a294d4d954cd2ddd6a88d9ec8a3ac78d54
[INFO] running `"docker" "start" "-a" "2ad9b0ab3928c40a72e30c4482c735a294d4d954cd2ddd6a88d9ec8a3ac78d54"`
[INFO] [stderr]     Checking chunked_transfer v0.3.1
[INFO] [stderr]     Checking ascii v0.7.1
[INFO] [stderr]     Checking log v0.4.1
[INFO] [stderr]    Compiling brotli-sys v0.2.1
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking memchr v1.0.2
[INFO] [stderr]     Checking filetime v0.1.15
[INFO] [stderr]     Checking base64 v0.7.0
[INFO] [stderr]     Checking rand v0.3.22
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking idna v0.1.4
[INFO] [stderr]     Checking threadpool v1.7.1
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking clap v2.31.2
[INFO] [stderr]    Compiling phf_shared v0.7.22
[INFO] [stderr]     Checking serde_json v1.0.19
[INFO] [stderr]     Checking chrono v0.4.2
[INFO] [stderr]     Checking term v0.2.14
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking buf_redux v0.6.3
[INFO] [stderr]     Checking twoway v0.1.8
[INFO] [stderr]     Checking uuid v0.1.18
[INFO] [stderr]     Checking chrono v0.2.25
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]    Compiling phf_generator v0.7.22
[INFO] [stderr]     Checking phf v0.7.22
[INFO] [stderr]     Checking gzip-header v0.1.2
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]    Compiling phf_codegen v0.7.22
[INFO] [stderr]     Checking url v0.2.38
[INFO] [stderr]     Checking deflate v0.7.18
[INFO] [stderr]    Compiling mime_guess v1.8.4
[INFO] [stderr]     Checking url v1.7.0
[INFO] [stderr]     Checking tiny_http v0.5.9
[INFO] [stderr] warning[E0713]: borrow may still be in use when destructor runs
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/url-1.7.0/src/form_urlencoded.rs:261:40
[INFO] [stderr]     |
[INFO] [stderr] 259 | impl<'a> Target for ::UrlQuery<'a> {
[INFO] [stderr]     |      -- lifetime `'a` defined here
[INFO] [stderr] 260 |     fn as_mut_string(&mut self) -> &mut String { &mut self.url.serialization }
[INFO] [stderr] 261 |     fn finish(self) -> &'a mut ::Url { self.url }
[INFO] [stderr]     |                                        ^^^^^^^^ - here, drop of `self` needs exclusive access to `*self.url`, because the type `UrlQuery<'_>` implements the `Drop` trait
[INFO] [stderr]     |                                        |
[INFO] [stderr]     |                                        returning this value requires that `*self.url` is borrowed for `'a`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]     = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]     = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr]     Checking multipart v0.13.6
[INFO] [stderr]     Checking brotli2 v0.2.2
[INFO] [stderr]     Checking rouille v2.1.0
[INFO] [stderr]     Checking led_dash v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(proc_macro)]
[INFO] [stderr]   |            ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(proc_macro)]
[INFO] [stderr]   |            ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.50s
[INFO] running `"docker" "inspect" "2ad9b0ab3928c40a72e30c4482c735a294d4d954cd2ddd6a88d9ec8a3ac78d54"`
[INFO] running `"docker" "rm" "-f" "2ad9b0ab3928c40a72e30c4482c735a294d4d954cd2ddd6a88d9ec8a3ac78d54"`
[INFO] [stdout] 2ad9b0ab3928c40a72e30c4482c735a294d4d954cd2ddd6a88d9ec8a3ac78d54