[INFO] fetching crate lark-type-check 0.1.0... [INFO] checking lark-type-check-0.1.0 against master#50e1dc1536264ab71c0850f346b12309477f29f7 for pr-85073 [INFO] extracting crate lark-type-check 0.1.0 into /workspace/builds/worker-4/source [INFO] validating manifest of crates.io crate lark-type-check 0.1.0 on toolchain 50e1dc1536264ab71c0850f346b12309477f29f7 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-4/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "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] 0822208c20b8a708446ecfc445e35aa52bf6779e6fd6d84ba2ae745621c4ac1b [INFO] running `Command { std: "docker" "start" "-a" "0822208c20b8a708446ecfc445e35aa52bf6779e6fd6d84ba2ae745621c4ac1b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "0822208c20b8a708446ecfc445e35aa52bf6779e6fd6d84ba2ae745621c4ac1b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0822208c20b8a708446ecfc445e35aa52bf6779e6fd6d84ba2ae745621c4ac1b", kill_on_drop: false }` [INFO] [stdout] 0822208c20b8a708446ecfc445e35aa52bf6779e6fd6d84ba2ae745621c4ac1b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] e52be4c5f344c04d1af8b4af87fc0e9579d7981da0bca4d1bee222efcf30d4d1 [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" "e52be4c5f344c04d1af8b4af87fc0e9579d7981da0bca4d1bee222efcf30d4d1", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Compiling proc-macro2 v1.0.27 [INFO] [stderr] Compiling libc v0.2.95 [INFO] [stderr] Compiling unicode-xid v0.2.2 [INFO] [stderr] Checking hashbrown v0.9.1 [INFO] [stderr] Compiling serde v1.0.126 [INFO] [stderr] Checking tinyvec_macros v0.1.0 [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Checking matches v0.1.8 [INFO] [stderr] Checking scopeguard v0.3.3 [INFO] [stderr] Checking rustc-hash v1.1.0 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Checking either v1.6.1 [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Compiling serde_derive v1.0.126 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Compiling serde_json v1.0.64 [INFO] [stderr] Checking itoa v0.4.7 [INFO] [stderr] Checking unicode-xid v0.1.0 [INFO] [stderr] Checking cfg-if v0.1.10 [INFO] [stderr] Checking datafrog v2.0.1 [INFO] [stderr] Checking tinyvec v1.2.0 [INFO] [stderr] Checking unicode-bidi v0.3.5 [INFO] [stderr] Checking itertools v0.7.11 [INFO] [stderr] Checking itertools v0.8.2 [INFO] [stderr] Checking generational-arena v0.2.8 [INFO] [stderr] Checking lock_api v0.1.5 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Compiling indexmap v1.6.2 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Checking unicode-normalization v0.1.17 [INFO] [stderr] Compiling parking_lot_core v0.4.0 [INFO] [stderr] Checking render-tree v0.1.1 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Checking rand_os v0.1.3 [INFO] [stderr] Compiling syn v1.0.72 [INFO] [stderr] Checking rand v0.6.5 [INFO] [stderr] Checking lark-debug-with v0.1.0 [INFO] [stderr] Checking lark-collections v0.1.0 [INFO] [stderr] Checking lark-unify v0.1.0 [INFO] [stderr] Checking idna v0.1.5 [INFO] [stderr] Checking parking_lot v0.7.1 [INFO] [stderr] Checking url v1.7.2 [INFO] [stderr] Checking lark-intern v0.1.0 [INFO] [stderr] Checking lark-string v0.1.0 [INFO] [stderr] Compiling num-derive v0.2.5 [INFO] [stderr] Compiling lark-debug-derive v0.1.0 [INFO] [stderr] Checking url_serde v0.2.0 [INFO] [stderr] Compiling derive-new v0.5.9 [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: 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] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 46.47s [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "e52be4c5f344c04d1af8b4af87fc0e9579d7981da0bca4d1bee222efcf30d4d1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e52be4c5f344c04d1af8b4af87fc0e9579d7981da0bca4d1bee222efcf30d4d1", kill_on_drop: false }` [INFO] [stdout] e52be4c5f344c04d1af8b4af87fc0e9579d7981da0bca4d1bee222efcf30d4d1