[INFO] fetching crate lark-type-check 0.1.0... [INFO] checking lark-type-check-0.1.0 against try#05c8870159e4f328578a970e125aa76d24f03b56 for pr-76219 [INFO] extracting crate lark-type-check 0.1.0 into /workspace/builds/worker-7/source [INFO] validating manifest of crates.io crate lark-type-check 0.1.0 on toolchain 05c8870159e4f328578a970e125aa76d24f03b56 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+05c8870159e4f328578a970e125aa76d24f03b56" "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-7/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+05c8870159e4f328578a970e125aa76d24f03b56" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+05c8870159e4f328578a970e125aa76d24f03b56" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded generational-arena v0.2.8 [INFO] [stderr] Downloaded render-tree v0.1.1 [INFO] [stderr] Downloaded datafrog v2.0.1 [INFO] [stderr] Downloaded lark-span v0.1.0 [INFO] [stderr] Downloaded languageserver-types v0.53.1 [INFO] [stderr] Downloaded lark-debug-derive v0.1.0 [INFO] [stderr] Downloaded lark-intern v0.1.0 [INFO] [stderr] Downloaded lark-unify v0.1.0 [INFO] [stderr] Downloaded lark-string v0.1.0 [INFO] [stderr] Downloaded lark-pretty-print v0.1.0 [INFO] [stderr] Downloaded lark-error v0.1.0 [INFO] [stderr] Downloaded language-reporting v0.3.1 [INFO] [stderr] Downloaded lark-ty v0.1.0 [INFO] [stderr] Downloaded lark-hir v0.1.0 [INFO] [stderr] Downloaded lark-entity 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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+05c8870159e4f328578a970e125aa76d24f03b56" "metadata" "--no-deps" "--format-version=1", 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] 4ff487831ea526c74d89e25dfc3b82ca82f7c230895424bc26bc7dd1ffa38b77 [INFO] running `Command { std: "docker" "start" "-a" "4ff487831ea526c74d89e25dfc3b82ca82f7c230895424bc26bc7dd1ffa38b77", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "4ff487831ea526c74d89e25dfc3b82ca82f7c230895424bc26bc7dd1ffa38b77", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4ff487831ea526c74d89e25dfc3b82ca82f7c230895424bc26bc7dd1ffa38b77", kill_on_drop: false }` [INFO] [stdout] 4ff487831ea526c74d89e25dfc3b82ca82f7c230895424bc26bc7dd1ffa38b77 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+05c8870159e4f328578a970e125aa76d24f03b56" "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] 5be103dbf08173f00efc924362781c466f668ba9a94f92d1a44cdf2f48189750 [INFO] running `Command { std: "docker" "start" "-a" "5be103dbf08173f00efc924362781c466f668ba9a94f92d1a44cdf2f48189750", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Checking hashbrown v0.9.0 [INFO] [stderr] Checking stable_deref_trait v1.2.0 [INFO] [stderr] Compiling log v0.4.11 [INFO] [stderr] Checking rustc-hash v1.1.0 [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Compiling num-derive v0.2.5 [INFO] [stderr] Checking itoa v0.4.6 [INFO] [stderr] Checking termcolor v1.1.0 [INFO] [stderr] Checking datafrog v2.0.1 [INFO] [stderr] Compiling indexmap v1.6.0 [INFO] [stderr] Checking itertools v0.7.11 [INFO] [stderr] Checking generational-arena v0.2.8 [INFO] [stderr] Checking bitflags v1.2.1 [INFO] [stderr] Compiling parking_lot_core v0.4.0 [INFO] [stderr] Checking rand_os v0.1.3 [INFO] [stderr] Checking owning_ref v0.4.1 [INFO] [stderr] Checking url_serde v0.2.0 [INFO] [stderr] Compiling derive-new v0.5.8 [INFO] [stderr] Compiling serde_derive v1.0.115 [INFO] [stderr] Checking rand v0.6.5 [INFO] [stderr] Checking serde_json v1.0.57 [INFO] [stderr] Checking lock_api v0.1.5 [INFO] [stderr] Checking lark-debug-with v0.1.0 [INFO] [stderr] Checking render-tree v0.1.1 [INFO] [stderr] Checking lark-collections v0.1.0 [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 salsa v0.9.2 [INFO] [stderr] Checking lark-string v0.1.0 [INFO] [stderr] Compiling lark-debug-derive v0.1.0 [INFO] [stderr] Checking language-reporting v0.3.1 [INFO] [stderr] Checking languageserver-types v0.53.1 [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] [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] [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: 3 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: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 49.31s [INFO] running `Command { std: "docker" "inspect" "5be103dbf08173f00efc924362781c466f668ba9a94f92d1a44cdf2f48189750", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5be103dbf08173f00efc924362781c466f668ba9a94f92d1a44cdf2f48189750", kill_on_drop: false }` [INFO] [stdout] 5be103dbf08173f00efc924362781c466f668ba9a94f92d1a44cdf2f48189750