[INFO] fetching crate syndication 0.5.0...
[INFO] checking syndication-0.5.0 against master#836c31742687ba4e2f857b5b698e1e9e6b67619c for pr-81789
[INFO] extracting crate syndication 0.5.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate syndication 0.5.0 on toolchain 836c31742687ba4e2f857b5b698e1e9e6b67619c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate syndication 0.5.0
[INFO] finished tweaking crates.io crate syndication 0.5.0
[INFO] tweaked toml for crates.io crate syndication 0.5.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate syndication 0.5.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 23d156f7eaa88022fc51856df93f7afe3d05a212e73467dfa8fb44570417db37
[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" "23d156f7eaa88022fc51856df93f7afe3d05a212e73467dfa8fb44570417db37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "23d156f7eaa88022fc51856df93f7afe3d05a212e73467dfa8fb44570417db37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23d156f7eaa88022fc51856df93f7afe3d05a212e73467dfa8fb44570417db37", kill_on_drop: false }`
[INFO] [stdout] 23d156f7eaa88022fc51856df93f7afe3d05a212e73467dfa8fb44570417db37
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e281ae3ab501ca52356e06082c5913c68920f72edd792511fc178ecd1adc00f9
[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" "e281ae3ab501ca52356e06082c5913c68920f72edd792511fc178ecd1adc00f9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling cc v1.0.46
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling derive_builder v0.5.1
[INFO] [stderr]    Compiling derive_builder v0.7.2
[INFO] [stderr]     Checking encoding_rs v0.8.20
[INFO] [stderr]    Compiling derive_more v0.14.1
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling darling_core v0.9.0
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling derive_builder_core v0.2.0
[INFO] [stderr]     Checking backtrace v0.3.40
[INFO] [stderr]    Compiling darling_macro v0.9.0
[INFO] [stderr]    Compiling synstructure v0.12.1
[INFO] [stderr]    Compiling darling v0.9.0
[INFO] [stderr]    Compiling derive_builder_core v0.5.0
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking quick-xml v0.12.4
[INFO] [stderr]     Checking quick-xml v0.14.0
[INFO] [stderr]     Checking atom_syndication v0.6.0
[INFO] [stderr]     Checking rss v1.8.0
[INFO] [stderr]     Checking syndication v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 46.28s
[INFO] running `Command { std: "docker" "inspect" "e281ae3ab501ca52356e06082c5913c68920f72edd792511fc178ecd1adc00f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e281ae3ab501ca52356e06082c5913c68920f72edd792511fc178ecd1adc00f9", kill_on_drop: false }`
[INFO] [stdout] e281ae3ab501ca52356e06082c5913c68920f72edd792511fc178ecd1adc00f9