[INFO] fetching crate unsaferef 0.1.0...
[INFO] checking unsaferef-0.1.0 against try#7b3da9103634dffd4f4365cfd8642427c781d99f+rustflags=-Dinherent-method-on-receiver for 152214-denied
[INFO] extracting crate unsaferef 0.1.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate unsaferef 0.1.0
[INFO] finished tweaking crates.io crate unsaferef 0.1.0
[INFO] tweaked toml for crates.io crate unsaferef 0.1.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate unsaferef 0.1.0 on toolchain 7b3da9103634dffd4f4365cfd8642427c781d99f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7b3da9103634dffd4f4365cfd8642427c781d99f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7b3da9103634dffd4f4365cfd8642427c781d99f" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7b3da9103634dffd4f4365cfd8642427c781d99f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+7b3da9103634dffd4f4365cfd8642427c781d99f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 00476e8f6d0dae79ae405da3449ed3f8a9f89dc7f2dc9dc4bad87b498e030c35
[INFO] running `Command { std: "docker" "start" "-a" "00476e8f6d0dae79ae405da3449ed3f8a9f89dc7f2dc9dc4bad87b498e030c35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "00476e8f6d0dae79ae405da3449ed3f8a9f89dc7f2dc9dc4bad87b498e030c35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00476e8f6d0dae79ae405da3449ed3f8a9f89dc7f2dc9dc4bad87b498e030c35", kill_on_drop: false }`
[INFO] [stdout] 00476e8f6d0dae79ae405da3449ed3f8a9f89dc7f2dc9dc4bad87b498e030c35
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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 -Dinherent-method-on-receiver" "-e" "RUSTDOCFLAGS=--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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+7b3da9103634dffd4f4365cfd8642427c781d99f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c1f76ef315b409c4de34c1621dab324797658071ad4b1b06f61ee45fb46b6aa4
[INFO] running `Command { std: "docker" "start" "-a" "c1f76ef315b409c4de34c1621dab324797658071ad4b1b06f61ee45fb46b6aa4", kill_on_drop: false }`
[INFO] [stderr]     Checking unsaferef v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: inherent methods on types that implement `Deref` or `Receiver` shadow methods of their target
[INFO] [stdout]   --> src/unsafe_cow.rs:12:19
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn to_mut(&mut self) -> &mut <T as ToOwned>::Owned {
[INFO] [stdout]    |                   ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 30 | impl<T: ?Sized + ToOwned> std::ops::Deref for UnsafeCow<T> {
[INFO] [stdout]    | ---------------------------------------------------------- trait implemented here
[INFO] [stdout] 31 |     type Target = T;
[INFO] [stdout]    |     ----------- with `Target` set here
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D inherent-method-on-receiver`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: inherent methods on types that implement `Deref` or `Receiver` shadow methods of their target
[INFO] [stdout]   --> src/unsafe_cow.rs:12:19
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn to_mut(&mut self) -> &mut <T as ToOwned>::Owned {
[INFO] [stdout]    |                   ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 30 | impl<T: ?Sized + ToOwned> std::ops::Deref for UnsafeCow<T> {
[INFO] [stdout]    | ---------------------------------------------------------- trait implemented here
[INFO] [stdout] 31 |     type Target = T;
[INFO] [stdout]    |     ----------- with `Target` set here
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D inherent-method-on-receiver`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `unsaferef` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `unsaferef` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "c1f76ef315b409c4de34c1621dab324797658071ad4b1b06f61ee45fb46b6aa4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1f76ef315b409c4de34c1621dab324797658071ad4b1b06f61ee45fb46b6aa4", kill_on_drop: false }`
[INFO] [stdout] c1f76ef315b409c4de34c1621dab324797658071ad4b1b06f61ee45fb46b6aa4