[INFO] fetching crate crates-io 0.31.1...
[INFO] checking crates-io-0.31.1 against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] extracting crate crates-io 0.31.1 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate crates-io 0.31.1 on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate crates-io 0.31.1
[INFO] finished tweaking crates.io crate crates-io 0.31.1
[INFO] tweaked toml for crates.io crate crates-io 0.31.1 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e176b2befd32ea95f69c5f2bddec7473cd4071a6be1d69a0e8a523ab4a1f4b6b
[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" "e176b2befd32ea95f69c5f2bddec7473cd4071a6be1d69a0e8a523ab4a1f4b6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e176b2befd32ea95f69c5f2bddec7473cd4071a6be1d69a0e8a523ab4a1f4b6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e176b2befd32ea95f69c5f2bddec7473cd4071a6be1d69a0e8a523ab4a1f4b6b", kill_on_drop: false }`
[INFO] [stdout] e176b2befd32ea95f69c5f2bddec7473cd4071a6be1d69a0e8a523ab4a1f4b6b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 36e3c455af2de995fc51a2741257da525c54b217794b9111cdc99a692aefaaf1
[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" "36e3c455af2de995fc51a2741257da525c54b217794b9111cdc99a692aefaaf1", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling curl v0.4.34
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]    Compiling serde_json v1.0.62
[INFO] [stderr]     Checking openssl-probe v0.1.2
[INFO] [stderr]     Checking anyhow v1.0.38
[INFO] [stderr]     Checking tinyvec v1.1.1
[INFO] [stderr]     Checking socket2 v0.3.19
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking form_urlencoded v1.0.0
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking unicode-normalization v0.1.16
[INFO] [stderr]    Compiling openssl-sys v0.9.60
[INFO] [stderr]    Compiling libz-sys v1.1.2
[INFO] [stderr]    Compiling curl-sys v0.4.40+curl-7.75.0
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]     Checking idna v0.2.1
[INFO] [stderr]     Checking url v2.2.0
[INFO] [stderr]     Checking crates-io v0.31.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 49.40s
[INFO] running `Command { std: "docker" "inspect" "36e3c455af2de995fc51a2741257da525c54b217794b9111cdc99a692aefaaf1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36e3c455af2de995fc51a2741257da525c54b217794b9111cdc99a692aefaaf1", kill_on_drop: false }`
[INFO] [stdout] 36e3c455af2de995fc51a2741257da525c54b217794b9111cdc99a692aefaaf1