[INFO] cloning repository https://github.com/johnchildren/rust-irc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/johnchildren/rust-irc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnchildren%2Frust-irc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnchildren%2Frust-irc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 712ec1e4fcd08647bc0505fb2f83da68a8303185
[INFO] checking johnchildren/rust-irc against try#05c8870159e4f328578a970e125aa76d24f03b56 for pr-76219
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnchildren%2Frust-irc" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/johnchildren/rust-irc on toolchain 05c8870159e4f328578a970e125aa76d24f03b56
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+05c8870159e4f328578a970e125aa76d24f03b56" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/johnchildren/rust-irc
[INFO] finished tweaking git repo https://github.com/johnchildren/rust-irc
[INFO] tweaked toml for git repo https://github.com/johnchildren/rust-irc written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/johnchildren/rust-irc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+05c8870159e4f328578a970e125aa76d24f03b56" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-io v0.1.2
[INFO] [stderr]   Downloaded net2 v0.2.30
[INFO] [stderr]   Downloaded bytes v0.4.4
[INFO] [stderr]   Downloaded tokio-core v0.1.8
[INFO] [stderr]   Downloaded mio v0.6.9
[INFO] [stderr]   Downloaded libc v0.2.26
[INFO] [stderr]   Downloaded rmp-serde v0.13.4
[INFO] [stderr]   Downloaded rmp v0.8.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+05c8870159e4f328578a970e125aa76d24f03b56" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d761a0ed64d444ea34ccd97598a43f4ff2a8fd9e1f2a2cd7771fef2fc2903a6d
[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" "d761a0ed64d444ea34ccd97598a43f4ff2a8fd9e1f2a2cd7771fef2fc2903a6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d761a0ed64d444ea34ccd97598a43f4ff2a8fd9e1f2a2cd7771fef2fc2903a6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d761a0ed64d444ea34ccd97598a43f4ff2a8fd9e1f2a2cd7771fef2fc2903a6d", kill_on_drop: false }`
[INFO] [stdout] d761a0ed64d444ea34ccd97598a43f4ff2a8fd9e1f2a2cd7771fef2fc2903a6d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+05c8870159e4f328578a970e125aa76d24f03b56" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fb81f518cb805aa18ef6868ad69b62969b832318bc67c6fd98c0f90f1d8265fe
[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" "fb81f518cb805aa18ef6868ad69b62969b832318bc67c6fd98c0f90f1d8265fe", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking libc v0.2.26
[INFO] [stderr]     Checking byteorder v1.1.0
[INFO] [stderr]     Checking futures v0.1.14
[INFO] [stderr]     Checking log v0.3.8
[INFO] [stderr]     Checking cfg-if v0.1.2
[INFO] [stderr]     Checking lazycell v0.4.0
[INFO] [stderr]     Checking num-traits v0.1.40
[INFO] [stderr]     Checking scoped-tls v0.1.0
[INFO] [stderr]     Checking serde v1.0.10
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking iovec v0.1.0
[INFO] [stderr]     Checking net2 v0.2.30
[INFO] [stderr]     Checking rand v0.3.15
[INFO] [stderr]     Checking rmp v0.8.6
[INFO] [stderr]     Checking bytes v0.4.4
[INFO] [stderr]     Checking mio v0.6.9
[INFO] [stderr]    Compiling serde_derive_internals v0.15.1
[INFO] [stderr]     Checking tokio-io v0.1.2
[INFO] [stderr]     Checking tokio-service v0.1.0
[INFO] [stderr]     Checking tokio-core v0.1.8
[INFO] [stderr]    Compiling serde_derive v1.0.10
[INFO] [stderr]     Checking tokio-proto v0.1.1
[INFO] [stderr]     Checking rmp-serde v0.13.4
[INFO] [stderr]     Checking rust-irc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 21s
[INFO] running `Command { std: "docker" "inspect" "fb81f518cb805aa18ef6868ad69b62969b832318bc67c6fd98c0f90f1d8265fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb81f518cb805aa18ef6868ad69b62969b832318bc67c6fd98c0f90f1d8265fe", kill_on_drop: false }`
[INFO] [stdout] fb81f518cb805aa18ef6868ad69b62969b832318bc67c6fd98c0f90f1d8265fe