[INFO] fetching crate rustun 0.3.7...
[INFO] checking rustun-0.3.7 against master#4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5 for pr-81174
[INFO] extracting crate rustun 0.3.7 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate rustun 0.3.7 on toolchain 4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rustun 0.3.7
[INFO] finished tweaking crates.io crate rustun 0.3.7
[INFO] tweaked toml for crates.io crate rustun 0.3.7 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate rustun 0.3.7 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 31b85d6ded69dd651bffa996a6a4c6592ce381253ddef5b51acaffa3008f17bd
[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" "31b85d6ded69dd651bffa996a6a4c6592ce381253ddef5b51acaffa3008f17bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "31b85d6ded69dd651bffa996a6a4c6592ce381253ddef5b51acaffa3008f17bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31b85d6ded69dd651bffa996a6a4c6592ce381253ddef5b51acaffa3008f17bd", kill_on_drop: false }`
[INFO] [stdout] 31b85d6ded69dd651bffa996a6a4c6592ce381253ddef5b51acaffa3008f17bd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0f604e13d73a4a7d90a738bf0133a5bd20af8d141c22e093d40a5ef35c442c2d
[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" "0f604e13d73a4a7d90a738bf0133a5bd20af8d141c22e093d40a5ef35c442c2d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling proc-macro2 v1.0.21
[INFO] [stderr]    Compiling syn v1.0.40
[INFO] [stderr]     Checking futures v0.1.29
[INFO] [stderr]    Compiling build_const v0.2.1
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking factory v0.1.2
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling crc v1.8.1
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking net2 v0.2.35
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking fibers v0.1.13
[INFO] [stderr]     Checking fibers_timeout_queue v0.1.0
[INFO] [stderr]     Checking fibers_global v0.1.2
[INFO] [stderr]    Compiling trackable_derive v0.1.3
[INFO] [stderr]     Checking trackable v0.2.23
[INFO] [stderr]     Checking bytecodec v0.4.13
[INFO] [stderr]     Checking stun_codec v0.1.12
[INFO] [stderr]     Checking fibers_transport v0.1.3
[INFO] [stderr]     Checking rustun v0.3.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.30s
[INFO] running `Command { std: "docker" "inspect" "0f604e13d73a4a7d90a738bf0133a5bd20af8d141c22e093d40a5ef35c442c2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f604e13d73a4a7d90a738bf0133a5bd20af8d141c22e093d40a5ef35c442c2d", kill_on_drop: false }`
[INFO] [stdout] 0f604e13d73a4a7d90a738bf0133a5bd20af8d141c22e093d40a5ef35c442c2d