[INFO] fetching crate exprz-core 0.0.6...
[INFO] checking exprz-core-0.0.6 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate exprz-core 0.0.6 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate exprz-core 0.0.6
[INFO] finished tweaking crates.io crate exprz-core 0.0.6
[INFO] tweaked toml for crates.io crate exprz-core 0.0.6 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate exprz-core 0.0.6 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b6c676b1b9dc3f578239991a449b8d2143a7fd1af1316f452cf3557121c50e71
[INFO] running `Command { std: "docker" "start" "-a" "b6c676b1b9dc3f578239991a449b8d2143a7fd1af1316f452cf3557121c50e71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b6c676b1b9dc3f578239991a449b8d2143a7fd1af1316f452cf3557121c50e71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6c676b1b9dc3f578239991a449b8d2143a7fd1af1316f452cf3557121c50e71", kill_on_drop: false }`
[INFO] [stdout] b6c676b1b9dc3f578239991a449b8d2143a7fd1af1316f452cf3557121c50e71
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 343a0cbd9d643df01c4cb34d744826f155476288d9179da9c8a2f4000f8912e2
[INFO] running `Command { std: "docker" "start" "-a" "343a0cbd9d643df01c4cb34d744826f155476288d9179da9c8a2f4000f8912e2", kill_on_drop: false }`
[INFO] [stderr]     Checking exprz-core v0.0.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to a provided trait method
[INFO] [stdout]    --> src/lib.rs:416:5
[INFO] [stdout]     |
[INFO] [stdout] 416 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `generic_associated_types` has been stable since 1.65.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | #![feature(generic_associated_types)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` has no effect when applied to a provided trait method
[INFO] [stdout]    --> src/lib.rs:416:5
[INFO] [stdout]     |
[INFO] [stdout] 416 |     #[must_use]
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `generic_associated_types` has been stable since 1.65.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | #![feature(generic_associated_types)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: missing required bound on `Item`
[INFO] [stdout]     --> src/lib.rs:1003:9
[INFO] [stdout]      |
[INFO] [stdout] 1003 | /         type Item<'t>: Borrow<T>
[INFO] [stdout] 1004 | |         where
[INFO] [stdout] 1005 | |             T: 't;
[INFO] [stdout]      | |                  ^
[INFO] [stdout]      | |                  |
[INFO] [stdout]      | |__________________help: add the required where clause: `, Self: 't`
[INFO] [stdout]      |
[INFO] [stdout]      |
[INFO] [stdout]      = note: this bound is currently required to ensure that impls have maximum flexibility
[INFO] [stdout]      = note: we are soliciting feedback, see issue #87479 <https://github.com/rust-lang/rust/issues/87479> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: missing required bound on `Iter`
[INFO] [stdout]     --> src/lib.rs:1008:9
[INFO] [stdout]      |
[INFO] [stdout] 1008 | /         type Iter<'t>: Iterator<Item = Self::Item<'t>>
[INFO] [stdout] 1009 | |         where
[INFO] [stdout] 1010 | |             T: 't;
[INFO] [stdout]      | |                  ^
[INFO] [stdout]      | |                  |
[INFO] [stdout]      | |__________________help: add the required where clause: `, Self: 't`
[INFO] [stdout]      |
[INFO] [stdout]      |
[INFO] [stdout]      = note: this bound is currently required to ensure that impls have maximum flexibility
[INFO] [stdout]      = note: we are soliciting feedback, see issue #87479 <https://github.com/rust-lang/rust/issues/87479> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: missing required bound on `IterGen`
[INFO] [stdout]     --> src/lib.rs:1019:9
[INFO] [stdout]      |
[INFO] [stdout] 1019 | /         type IterGen<'t>: IteratorGen<T>
[INFO] [stdout] 1020 | |         where
[INFO] [stdout] 1021 | |             T: 't;
[INFO] [stdout]      | |                  ^
[INFO] [stdout]      | |                  |
[INFO] [stdout]      | |__________________help: add the required where clause: `, Self: 't`
[INFO] [stdout]      |
[INFO] [stdout]      |
[INFO] [stdout]      = note: this bound is currently required to ensure that impls have maximum flexibility
[INFO] [stdout]      = note: we are soliciting feedback, see issue #87479 <https://github.com/rust-lang/rust/issues/87479> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: missing required bound on `Item`
[INFO] [stdout]     --> src/lib.rs:1003:9
[INFO] [stdout]      |
[INFO] [stdout] 1003 | /         type Item<'t>: Borrow<T>
[INFO] [stdout] 1004 | |         where
[INFO] [stdout] 1005 | |             T: 't;
[INFO] [stdout]      | |                  ^
[INFO] [stdout]      | |                  |
[INFO] [stdout]      | |__________________help: add the required where clause: `, Self: 't`
[INFO] [stdout]      |
[INFO] [stdout]      |
[INFO] [stdout]      = note: this bound is currently required to ensure that impls have maximum flexibility
[INFO] [stdout]      = note: we are soliciting feedback, see issue #87479 <https://github.com/rust-lang/rust/issues/87479> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: missing required bound on `Iter`
[INFO] [stdout]     --> src/lib.rs:1008:9
[INFO] [stdout]      |
[INFO] [stdout] 1008 | /         type Iter<'t>: Iterator<Item = Self::Item<'t>>
[INFO] [stdout] 1009 | |         where
[INFO] [stdout] 1010 | |             T: 't;
[INFO] [stdout]      | |                  ^
[INFO] [stdout]      | |                  |
[INFO] [stdout]      | |__________________help: add the required where clause: `, Self: 't`
[INFO] [stdout]      |
[INFO] [stdout]      |
[INFO] [stdout]      = note: this bound is currently required to ensure that impls have maximum flexibility
[INFO] [stdout]      = note: we are soliciting feedback, see issue #87479 <https://github.com/rust-lang/rust/issues/87479> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: missing required bound on `IterGen`
[INFO] [stdout]     --> src/lib.rs:1019:9
[INFO] [stdout]      |
[INFO] [stdout] 1019 | /         type IterGen<'t>: IteratorGen<T>
[INFO] [stdout] 1020 | |         where
[INFO] [stdout] 1021 | |             T: 't;
[INFO] [stdout]      | |                  ^
[INFO] [stdout]      | |                  |
[INFO] [stdout]      | |__________________help: add the required where clause: `, Self: 't`
[INFO] [stdout]      |
[INFO] [stdout]      |
[INFO] [stdout]      = note: this bound is currently required to ensure that impls have maximum flexibility
[INFO] [stdout]      = note: we are soliciting feedback, see issue #87479 <https://github.com/rust-lang/rust/issues/87479> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exprz-core` (lib test) due to 3 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `exprz-core` (lib) due to 3 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "343a0cbd9d643df01c4cb34d744826f155476288d9179da9c8a2f4000f8912e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "343a0cbd9d643df01c4cb34d744826f155476288d9179da9c8a2f4000f8912e2", kill_on_drop: false }`
[INFO] [stdout] 343a0cbd9d643df01c4cb34d744826f155476288d9179da9c8a2f4000f8912e2