[INFO] fetching crate mpd-discord-rpc 1.2.2...
[INFO] checking mpd-discord-rpc-1.2.2 against try#39e1293fce4b650061e85dda88aa428f726a8444 for pr-88041
[INFO] extracting crate mpd-discord-rpc 1.2.2 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate mpd-discord-rpc 1.2.2 on toolchain 39e1293fce4b650061e85dda88aa428f726a8444
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mpd-discord-rpc 1.2.2
[INFO] finished tweaking crates.io crate mpd-discord-rpc 1.2.2
[INFO] tweaked toml for crates.io crate mpd-discord-rpc 1.2.2 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate mpd-discord-rpc 1.2.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mpd v0.0.12
[INFO] [stderr]   Downloaded discord-rpc-client v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1b6fe7c5f2e527bae3aedebe70fb003147d2b392f0206f30904c11f04dcea3c6
[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" "1b6fe7c5f2e527bae3aedebe70fb003147d2b392f0206f30904c11f04dcea3c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1b6fe7c5f2e527bae3aedebe70fb003147d2b392f0206f30904c11f04dcea3c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b6fe7c5f2e527bae3aedebe70fb003147d2b392f0206f30904c11f04dcea3c6", kill_on_drop: false }`
[INFO] [stdout] 1b6fe7c5f2e527bae3aedebe70fb003147d2b392f0206f30904c11f04dcea3c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 42c4007e406723d795d1c640b4a5e4c776c722aa94de6e98f284f4e9f5e12f3e
[INFO] running `Command { std: "docker" "start" "-a" "42c4007e406723d795d1c640b4a5e4c776c722aa94de6e98f284f4e9f5e12f3e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking smallvec v0.6.14
[INFO] [stderr]     Checking regex v1.5.3
[INFO] [stderr]     Checking lock_api v0.1.5
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_pcg v0.1.2
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking crossbeam-channel v0.3.9
[INFO] [stderr]     Checking rand_chacha v0.1.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling syn v1.0.71
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking dirs-sys v0.3.6
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking mpd v0.0.12
[INFO] [stderr]     Checking uuid v0.6.5
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking discord-rpc-client v0.3.0
[INFO] [stderr]     Checking mpd-discord-rpc v1.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.74s
[INFO] running `Command { std: "docker" "inspect" "42c4007e406723d795d1c640b4a5e4c776c722aa94de6e98f284f4e9f5e12f3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42c4007e406723d795d1c640b4a5e4c776c722aa94de6e98f284f4e9f5e12f3e", kill_on_drop: false }`
[INFO] [stdout] 42c4007e406723d795d1c640b4a5e4c776c722aa94de6e98f284f4e9f5e12f3e