[INFO] updating cached repository https://github.com/msmykowski/rust_hangman [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] ec4d134d8e73418090838dcdffa32b94dd4e4022 [INFO] checking msmykowski/rust_hangman against master#4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb for pr-64672 [INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmsmykowski%2Frust_hangman" "work/builds/worker-6/source"` [INFO] [stderr] Cloning into 'work/builds/worker-6/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/msmykowski/rust_hangman 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/msmykowski/rust_hangman [INFO] finished tweaking git repo https://github.com/msmykowski/rust_hangman [INFO] tweaked toml for git repo https://github.com/msmykowski/rust_hangman written to work/builds/worker-6/source/Cargo.toml [INFO] crate git repo https://github.com/msmykowski/rust_hangman 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] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/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] 3ecf2ff19da48487e75290ffed4edbbce2b4eb577f0f0a7527a4b9ab4dd0f7b6 [INFO] running `"docker" "start" "-a" "3ecf2ff19da48487e75290ffed4edbbce2b4eb577f0f0a7527a4b9ab4dd0f7b6"` [INFO] [stderr] Checking matches v0.1.6 [INFO] [stderr] Checking unicode-normalization v0.1.5 [INFO] [stderr] Checking cfg-if v0.1.2 [INFO] [stderr] Checking byteorder v1.2.2 [INFO] [stderr] Checking lazycell v0.6.0 [INFO] [stderr] Checking slab v0.4.0 [INFO] [stderr] Checking slab v0.3.0 [INFO] [stderr] Checking httparse v1.2.4 [INFO] [stderr] Checking json v0.11.13 [INFO] [stderr] Checking iovec v0.1.2 [INFO] [stderr] Checking rand v0.4.2 [INFO] [stderr] Checking log v0.4.1 [INFO] [stderr] Checking net2 v0.2.32 [INFO] [stderr] Checking unicode-bidi v0.3.4 [INFO] [stderr] Checking bytes v0.4.6 [INFO] [stderr] Checking mio v0.6.14 [INFO] [stderr] Checking idna v0.1.4 [INFO] [stderr] Checking rand v0.3.22 [INFO] [stderr] Checking names v0.10.0 [INFO] [stderr] Checking url v1.7.0 [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 hang_man v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/main.rs:89:37 [INFO] [stderr] | [INFO] [stderr] 89 | tx: std::sync::mpsc::Sender>, [INFO] [stderr] | ^^^ help: use `dyn`: `dyn Job` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/main.rs:143:40 [INFO] [stderr] | [INFO] [stderr] 143 | let (tx, rx) = mpsc::channel::>(); [INFO] [stderr] | ^^^ help: use `dyn`: `dyn Job` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/main.rs:89:37 [INFO] [stderr] | [INFO] [stderr] 89 | tx: std::sync::mpsc::Sender>, [INFO] [stderr] | ^^^ help: use `dyn`: `dyn Job` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/main.rs:143:40 [INFO] [stderr] | [INFO] [stderr] 143 | let (tx, rx) = mpsc::channel::>(); [INFO] [stderr] | ^^^ help: use `dyn`: `dyn Job` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:146:13 [INFO] [stderr] | [INFO] [stderr] 146 | for mut received in rx { [INFO] [stderr] | ----^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:146:13 [INFO] [stderr] | [INFO] [stderr] 146 | for mut received in rx { [INFO] [stderr] | ----^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 5.65s [INFO] running `"docker" "inspect" "3ecf2ff19da48487e75290ffed4edbbce2b4eb577f0f0a7527a4b9ab4dd0f7b6"` [INFO] running `"docker" "rm" "-f" "3ecf2ff19da48487e75290ffed4edbbce2b4eb577f0f0a7527a4b9ab4dd0f7b6"` [INFO] [stdout] 3ecf2ff19da48487e75290ffed4edbbce2b4eb577f0f0a7527a4b9ab4dd0f7b6