[INFO] fetching crate exprz-core 0.0.6... [INFO] testing exprz-core-0.0.6 against 1.90.0 for beta-1.91-3 [INFO] extracting crate exprz-core 0.0.6 into /workspace/builds/worker-6-tc1/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-6-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate exprz-core 0.0.6 on toolchain 1.90.0 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "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" "+1.90.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] d9ae7f533fcf82e1c01877afdc02846990150a4beee7de377755720fea060c1c [INFO] running `Command { std: "docker" "start" "-a" "d9ae7f533fcf82e1c01877afdc02846990150a4beee7de377755720fea060c1c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d9ae7f533fcf82e1c01877afdc02846990150a4beee7de377755720fea060c1c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d9ae7f533fcf82e1c01877afdc02846990150a4beee7de377755720fea060c1c", kill_on_drop: false }` [INFO] [stdout] d9ae7f533fcf82e1c01877afdc02846990150a4beee7de377755720fea060c1c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 2db2f9e3e9472638c338e9f40ff5d700875c326a5af58ed62ef70a8367c45be2 [INFO] running `Command { std: "docker" "start" "-a" "2db2f9e3e9472638c338e9f40ff5d700875c326a5af58ed62ef70a8367c45be2", kill_on_drop: false }` [INFO] [stderr] Compiling exprz-core v0.0.6 (/opt/rustwide/workdir) [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stdout] --> src/lib.rs:7:1 [INFO] [stdout] | [INFO] [stdout] 7 | #![feature(generic_associated_types)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute [INFO] [stdout] | [INFO] [stdout] = help: the feature `generic_associated_types` has been stable since `1.65.0` and no longer requires an attribute to enable [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 [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 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> [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 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 [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 for more information [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0554`. [INFO] [stdout] [INFO] [stderr] error: could not compile `exprz-core` (lib) due to 4 previous errors; 2 warnings emitted [INFO] running `Command { std: "docker" "inspect" "2db2f9e3e9472638c338e9f40ff5d700875c326a5af58ed62ef70a8367c45be2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2db2f9e3e9472638c338e9f40ff5d700875c326a5af58ed62ef70a8367c45be2", kill_on_drop: false }` [INFO] [stdout] 2db2f9e3e9472638c338e9f40ff5d700875c326a5af58ed62ef70a8367c45be2