[INFO] fetching crate lark-type-check 0.1.0... [INFO] checking lark-type-check-0.1.0 against try#b2f80f6008cdafc35b4472bd46afa16cc6b0cd63 for pr-79470 [INFO] extracting crate lark-type-check 0.1.0 into /workspace/builds/worker-3/source [INFO] validating manifest of crates.io crate lark-type-check 0.1.0 on toolchain b2f80f6008cdafc35b4472bd46afa16cc6b0cd63 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking crates.io crate lark-type-check 0.1.0 [INFO] finished tweaking crates.io crate lark-type-check 0.1.0 [INFO] tweaked toml for crates.io crate lark-type-check 0.1.0 written to /workspace/builds/worker-3/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded lark-ty v0.1.0 [INFO] [stderr] Downloaded lark-unify v0.1.0 [INFO] [stderr] Downloaded lark-pretty-print v0.1.0 [INFO] [stderr] Downloaded lark-span v0.1.0 [INFO] [stderr] Downloaded lark-entity v0.1.0 [INFO] [stderr] Downloaded language-reporting v0.3.1 [INFO] [stderr] Downloaded lark-intern v0.1.0 [INFO] [stderr] Downloaded lark-string v0.1.0 [INFO] [stderr] Downloaded lark-debug-derive v0.1.0 [INFO] [stderr] Downloaded datafrog v2.0.1 [INFO] [stderr] Downloaded lark-error v0.1.0 [INFO] [stderr] Downloaded languageserver-types v0.53.1 [INFO] [stderr] Downloaded lark-hir v0.1.0 [INFO] [stderr] Downloaded lark-parser v0.1.0 [INFO] [stderr] Downloaded salsa v0.9.2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] d105695485366c31a4d5afaf03a3af94a337212ffa0088852527b5ee41ce3c9c [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "d105695485366c31a4d5afaf03a3af94a337212ffa0088852527b5ee41ce3c9c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d105695485366c31a4d5afaf03a3af94a337212ffa0088852527b5ee41ce3c9c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d105695485366c31a4d5afaf03a3af94a337212ffa0088852527b5ee41ce3c9c", kill_on_drop: false }` [INFO] [stdout] d105695485366c31a4d5afaf03a3af94a337212ffa0088852527b5ee41ce3c9c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 618f5b7239d3dd546d9723ca4fc7007051d4a36f170373e9ee895f85c22d8a04 [INFO] running `Command { std: "docker" "start" "-a" "618f5b7239d3dd546d9723ca4fc7007051d4a36f170373e9ee895f85c22d8a04", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling libc v0.2.81 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Checking cfg-if v0.1.10 [INFO] [stderr] Checking either v1.6.1 [INFO] [stderr] Compiling num-derive v0.2.5 [INFO] [stderr] Compiling serde_json v1.0.60 [INFO] [stderr] Checking unicode-xid v0.1.0 [INFO] [stderr] Checking datafrog v2.0.1 [INFO] [stderr] Compiling syn v1.0.54 [INFO] [stderr] Checking url_serde v0.2.0 [INFO] [stderr] Compiling lark-debug-derive v0.1.0 [INFO] [stderr] Checking log v0.4.11 [INFO] [stderr] Checking generational-arena v0.2.8 [INFO] [stderr] Checking itertools v0.7.11 [INFO] [stderr] Checking itertools v0.8.2 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Compiling indexmap v1.6.0 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Compiling parking_lot_core v0.4.0 [INFO] [stderr] Checking render-tree v0.1.1 [INFO] [stderr] Checking lark-debug-with v0.1.0 [INFO] [stderr] Checking rand_os v0.1.3 [INFO] [stderr] Checking lark-collections v0.1.0 [INFO] [stderr] Checking rand v0.6.5 [INFO] [stderr] Checking lark-unify v0.1.0 [INFO] [stderr] Checking parking_lot v0.7.1 [INFO] [stderr] Checking lark-intern v0.1.0 [INFO] [stderr] Checking lark-string v0.1.0 [INFO] [stderr] Compiling derive-new v0.5.8 [INFO] [stderr] Compiling serde_derive v1.0.118 [INFO] [stderr] Checking salsa v0.9.2 [INFO] [stderr] Checking languageserver-types v0.53.1 [INFO] [stderr] Checking language-reporting v0.3.1 [INFO] [stderr] Checking lark-span v0.1.0 [INFO] [stderr] Checking lark-error v0.1.0 [INFO] [stderr] Checking lark-entity v0.1.0 [INFO] [stderr] Checking lark-ty v0.1.0 [INFO] [stderr] Checking lark-hir v0.1.0 [INFO] [stderr] Checking lark-parser v0.1.0 [INFO] [stderr] Checking lark-pretty-print v0.1.0 [INFO] [stderr] Checking lark-type-check v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused doc comment [INFO] [stdout] --> src/full_inference/perm.rs:9:1 [INFO] [stdout] | [INFO] [stdout] 9 | /// An intern'd permission. [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_doc_comments)]` on by default [INFO] [stdout] = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes [INFO] [stdout] --> src/lib.rs:5:12 [INFO] [stdout] | [INFO] [stdout] 5 | #![feature(specialization)] [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(incomplete_features)]` on by default [INFO] [stdout] = note: see issue #31844 for more information [INFO] [stdout] = help: consider using `min_specialization` instead, which is more stable and complete [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused doc comment [INFO] [stdout] --> src/full_inference/perm.rs:9:1 [INFO] [stdout] | [INFO] [stdout] 9 | /// An intern'd permission. [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_doc_comments)]` on by default [INFO] [stdout] = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes [INFO] [stdout] --> src/lib.rs:5:12 [INFO] [stdout] | [INFO] [stdout] 5 | #![feature(specialization)] [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(incomplete_features)]` on by default [INFO] [stdout] = note: see issue #31844 for more information [INFO] [stdout] = help: consider using `min_specialization` instead, which is more stable and complete [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Placeholder` [INFO] [stdout] --> src/full_inference/perm.rs:29:5 [INFO] [stdout] | [INFO] [stdout] 29 | Placeholder(Placeholder), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `never_type` has been stable since 1.49.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:4:12 [INFO] [stdout] | [INFO] [stdout] 4 | #![feature(never_type)] [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(stable_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Placeholder` [INFO] [stdout] --> src/full_inference/perm.rs:29:5 [INFO] [stdout] | [INFO] [stdout] 29 | Placeholder(Placeholder), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `never_type` has been stable since 1.49.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:4:12 [INFO] [stdout] | [INFO] [stdout] 4 | #![feature(never_type)] [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(stable_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1m 04s [INFO] running `Command { std: "docker" "inspect" "618f5b7239d3dd546d9723ca4fc7007051d4a36f170373e9ee895f85c22d8a04", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "618f5b7239d3dd546d9723ca4fc7007051d4a36f170373e9ee895f85c22d8a04", kill_on_drop: false }` [INFO] [stdout] 618f5b7239d3dd546d9723ca4fc7007051d4a36f170373e9ee895f85c22d8a04