[INFO] updating cached repository https://github.com/rotty/actix-playground
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] fb17b3f0f18f7c07096e2e36d4b4369dd5cdbe71
[INFO] checking rotty/actix-playground against master#be493fe8cc40c3d3f6030a1313c1ff747fce770d for pr-69129
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frotty%2Factix-playground" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rotty/actix-playground on toolchain be493fe8cc40c3d3f6030a1313c1ff747fce770d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+be493fe8cc40c3d3f6030a1313c1ff747fce770d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/rotty/actix-playground
[INFO] finished tweaking git repo https://github.com/rotty/actix-playground
[INFO] tweaked toml for git repo https://github.com/rotty/actix-playground written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/rotty/actix-playground already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+be493fe8cc40c3d3f6030a1313c1ff747fce770d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+be493fe8cc40c3d3f6030a1313c1ff747fce770d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f3a0b06a53e225bed1cee5f75999b1ab3f8e9d66b82e5138d01d8784829e3448
[INFO] running `"docker" "start" "-a" "f3a0b06a53e225bed1cee5f75999b1ab3f8e9d66b82e5138d01d8784829e3448"`
[INFO] [stderr]    Compiling actix-web v0.7.15
[INFO] [stderr]     Checking socket2 v0.3.8
[INFO] [stderr]     Checking hostname v0.1.5
[INFO] [stderr]     Checking signal-hook v0.1.6
[INFO] [stderr]     Checking memchr v2.1.1
[INFO] [stderr]     Checking brotli-sys v0.3.2
[INFO] [stderr]     Checking ring v0.13.5
[INFO] [stderr]     Checking miniz-sys v0.1.11
[INFO] [stderr]    Compiling syn v0.15.22
[INFO] [stderr]     Checking serde_urlencoded v0.5.4
[INFO] [stderr]     Checking h2 v0.1.14
[INFO] [stderr]     Checking crossbeam-channel v0.3.2
[INFO] [stderr]     Checking parking_lot_core v0.4.0
[INFO] [stderr]     Checking brotli2 v0.3.2
[INFO] [stderr]     Checking flate2 v1.0.6
[INFO] [stderr]     Checking resolv-conf v0.6.1
[INFO] [stderr]     Checking tokio-signal v0.2.7
[INFO] [stderr]     Checking aho-corasick v0.6.9
[INFO] [stderr]     Checking parking_lot v0.7.0
[INFO] [stderr]     Checking regex v1.1.0
[INFO] [stderr]     Checking cookie v0.11.0
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling failure_derive v0.1.3
[INFO] [stderr]    Compiling actix_derive v0.3.2
[INFO] [stderr]     Checking failure v0.1.3
[INFO] [stderr]     Checking trust-dns-proto v0.5.0
[INFO] [stderr]     Checking trust-dns-resolver v0.10.0
[INFO] [stderr]     Checking actix v0.7.8
[INFO] [stderr]     Checking actix-net v0.2.4
[INFO] [stderr]     Checking actix-http-client v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 03s
[INFO] running `"docker" "inspect" "f3a0b06a53e225bed1cee5f75999b1ab3f8e9d66b82e5138d01d8784829e3448"`
[INFO] running `"docker" "rm" "-f" "f3a0b06a53e225bed1cee5f75999b1ab3f8e9d66b82e5138d01d8784829e3448"`
[INFO] [stdout] f3a0b06a53e225bed1cee5f75999b1ab3f8e9d66b82e5138d01d8784829e3448