[INFO] fetching crate lark-build 0.1.0...
[INFO] checking lark-build-0.1.0 against master#339e19697a39a78f4d669c217b7d21109215de41 for pr-81213
[INFO] extracting crate lark-build 0.1.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate lark-build 0.1.0 on toolchain 339e19697a39a78f4d669c217b7d21109215de41
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lark-build 0.1.0
[INFO] finished tweaking crates.io crate lark-build 0.1.0
[INFO] tweaked toml for crates.io crate lark-build 0.1.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "fetch" "--locked" "--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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 509eec2013a56205f4d61ada0d7c4cae5f614687a5b3968c988c7b1745f42d51
[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" "509eec2013a56205f4d61ada0d7c4cae5f614687a5b3968c988c7b1745f42d51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "509eec2013a56205f4d61ada0d7c4cae5f614687a5b3968c988c7b1745f42d51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "509eec2013a56205f4d61ada0d7c4cae5f614687a5b3968c988c7b1745f42d51", kill_on_drop: false }`
[INFO] [stdout] 509eec2013a56205f4d61ada0d7c4cae5f614687a5b3968c988c7b1745f42d51
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0c11699ab32668964be0fc9adf9af3949fbace49945c2d2b28ecfc9839659169
[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" "0c11699ab32668964be0fc9adf9af3949fbace49945c2d2b28ecfc9839659169", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling serde v1.0.120
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking unicode-xid v0.1.0
[INFO] [stderr]     Checking datafrog v2.0.1
[INFO] [stderr]     Checking generational-arena v0.2.8
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking lark-debug-with v0.1.0
[INFO] [stderr]    Compiling derive-new v0.5.8
[INFO] [stderr]    Compiling lark-debug-derive v0.1.0
[INFO] [stderr]     Checking owning_ref v0.4.1
[INFO] [stderr]     Checking lark-collections v0.1.0
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking lock_api v0.1.5
[INFO] [stderr]     Checking lark-unify v0.1.0
[INFO] [stderr]     Checking smallvec v0.6.14
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking tempfile v2.2.0
[INFO] [stderr]     Checking render-tree v0.1.1
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[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]     Checking url_serde v0.2.0
[INFO] [stderr]     Checking serde_json v1.0.61
[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-actor 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
[INFO] [stderr]     Checking lark-query-system v0.1.0
[INFO] [stderr]     Checking lark-build v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 38.19s
[INFO] running `Command { std: "docker" "inspect" "0c11699ab32668964be0fc9adf9af3949fbace49945c2d2b28ecfc9839659169", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c11699ab32668964be0fc9adf9af3949fbace49945c2d2b28ecfc9839659169", kill_on_drop: false }`
[INFO] [stdout] 0c11699ab32668964be0fc9adf9af3949fbace49945c2d2b28ecfc9839659169