[INFO] updating cached repository https://github.com/mraof/mudengine
[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] c386a99b36d095dcb71b90ba4e9740eb62536491
[INFO] checking mraof/mudengine against try#00e4530a79c42b21a6ca2ac1edb597c90d21f89f for pr-64672
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmraof%2Fmudengine" "work/builds/worker-4/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mraof/mudengine on toolchain 00e4530a79c42b21a6ca2ac1edb597c90d21f89f
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+00e4530a79c42b21a6ca2ac1edb597c90d21f89f" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/mraof/mudengine
[INFO] finished tweaking git repo https://github.com/mraof/mudengine
[INFO] tweaked toml for git repo https://github.com/mraof/mudengine written to work/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/mraof/mudengine already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+00e4530a79c42b21a6ca2ac1edb597c90d21f89f" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/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" "+00e4530a79c42b21a6ca2ac1edb597c90d21f89f" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 146ce308b4ab80e084bb3269e4937d5ba0151d9631df622313f42627dc34f2c7
[INFO] running `"docker" "start" "-a" "146ce308b4ab80e084bb3269e4937d5ba0151d9631df622313f42627dc34f2c7"`
[INFO] [stderr]    Compiling either v1.5.0
[INFO] [stderr]     Checking slog v2.2.3
[INFO] [stderr]     Checking crossbeam v0.2.12
[INFO] [stderr]     Checking unicode-normalization v0.1.5
[INFO] [stderr]     Checking take_mut v0.2.2
[INFO] [stderr]     Checking atom v0.3.5
[INFO] [stderr]     Checking mopa v0.2.2
[INFO] [stderr]     Checking serde v1.0.41
[INFO] [stderr]     Checking tuple_utils v0.2.0
[INFO] [stderr]     Checking trackable v0.2.17
[INFO] [stderr]     Checking ordermap v0.4.1
[INFO] [stderr]    Compiling proc-macro2 v0.3.6
[INFO] [stderr]     Checking time v0.1.40
[INFO] [stderr]     Checking term_size v0.3.1
[INFO] [stderr]     Checking log v0.4.1
[INFO] [stderr]    Compiling syn v0.10.8
[INFO] [stderr]     Checking isatty v0.1.8
[INFO] [stderr]     Checking atty v0.2.8
[INFO] [stderr]     Checking term v0.5.1
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking parking_lot_core v0.2.14
[INFO] [stderr]    Compiling itertools v0.5.10
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]     Checking textwrap v0.8.0
[INFO] [stderr]     Checking num-integer v0.1.39
[INFO] [stderr]    Compiling shred-derive v0.5.0
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking mio v0.6.14
[INFO] [stderr]     Checking rmp v0.8.7
[INFO] [stderr]     Checking clap v2.26.2
[INFO] [stderr]     Checking slog-async v2.3.0
[INFO] [stderr]     Checking slog-scope v4.0.1
[INFO] [stderr]    Compiling quote v0.5.1
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking parking_lot v0.5.5
[INFO] [stderr]     Checking chrono v0.4.3
[INFO] [stderr]     Checking idna v0.1.4
[INFO] [stderr]     Checking slog-stdlog v3.0.2
[INFO] [stderr]    Compiling syn v0.13.1
[INFO] [stderr]     Checking rayon-core v1.4.0
[INFO] [stderr]     Checking rayon v1.0.1
[INFO] [stderr]     Checking slog-term v2.4.0
[INFO] [stderr]     Checking url v1.7.0
[INFO] [stderr]    Compiling serde_derive_internals v0.23.1
[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 ws v0.7.6
[INFO] [stderr]     Checking hibitset v0.5.0
[INFO] [stderr]     Checking shred v0.7.0
[INFO] [stderr]    Compiling serde_derive v1.0.41
[INFO] [stderr]    Compiling derivative v1.0.0
[INFO] [stderr]     Checking close_enough v0.2.1
[INFO] [stderr]     Checking rmp-serde v0.13.7
[INFO] [stderr]     Checking toml v0.4.6
[INFO] [stderr]     Checking serde_json v1.0.15
[INFO] [stderr]     Checking shrev v1.0.1
[INFO] [stderr]     Checking specs v0.11.2
[INFO] [stderr]     Checking serdeconv v0.3.0
[INFO] [stderr]     Checking sloggers v0.2.7
[INFO] [stderr]     Checking mudengine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `specs::prelude`
[INFO] [stderr]   --> src/main.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 | use specs::prelude::*;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `handle`
[INFO] [stderr]   --> src/main.rs:44:9
[INFO] [stderr]    |
[INFO] [stderr] 44 |     let handle = ws.broadcaster();
[INFO] [stderr]    |         ^^^^^^ help: consider prefixing with an underscore: `_handle`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `tick_counter` is assigned to, but never used
[INFO] [stderr]   --> src/main.rs:52:13
[INFO] [stderr]    |
[INFO] [stderr] 52 |     let mut tick_counter = 0;
[INFO] [stderr]    |             ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_tick_counter` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `specs::prelude`
[INFO] [stderr]   --> src/main.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 | use specs::prelude::*;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `handle`
[INFO] [stderr]   --> src/main.rs:44:9
[INFO] [stderr]    |
[INFO] [stderr] 44 |     let handle = ws.broadcaster();
[INFO] [stderr]    |         ^^^^^^ help: consider prefixing with an underscore: `_handle`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `tick_counter` is assigned to, but never used
[INFO] [stderr]   --> src/main.rs:52:13
[INFO] [stderr]    |
[INFO] [stderr] 52 |     let mut tick_counter = 0;
[INFO] [stderr]    |             ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_tick_counter` instead
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 42.01s
[INFO] running `"docker" "inspect" "146ce308b4ab80e084bb3269e4937d5ba0151d9631df622313f42627dc34f2c7"`
[INFO] running `"docker" "rm" "-f" "146ce308b4ab80e084bb3269e4937d5ba0151d9631df622313f42627dc34f2c7"`
[INFO] [stdout] 146ce308b4ab80e084bb3269e4937d5ba0151d9631df622313f42627dc34f2c7