[INFO] cloning repository https://github.com/zaphar/ucg
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zaphar/ucg" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzaphar%2Fucg", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzaphar%2Fucg'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 72de6043845744928602f77b50aae56b20607984
[INFO] checking zaphar/ucg against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzaphar%2Fucg" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zaphar/ucg on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/zaphar/ucg
[INFO] finished tweaking git repo https://github.com/zaphar/ucg
[INFO] tweaked toml for git repo https://github.com/zaphar/ucg written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/zaphar/ucg already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bencher v0.1.5
[INFO] [stderr]   Downloaded walkdir v2.2.8
[INFO] [stderr]   Downloaded rustyline v4.1.0
[INFO] [stderr]   Downloaded nix v0.13.1
[INFO] [stderr]   Downloaded simple-error v0.1.12
[INFO] [stderr]   Downloaded abortable_parser v0.2.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0d3073ca24296ba3575cb0616661b3c649fc987e7838c74464e62718bef822f9
[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" "0d3073ca24296ba3575cb0616661b3c649fc987e7838c74464e62718bef822f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0d3073ca24296ba3575cb0616661b3c649fc987e7838c74464e62718bef822f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d3073ca24296ba3575cb0616661b3c649fc987e7838c74464e62718bef822f9", kill_on_drop: false }`
[INFO] [stdout] 0d3073ca24296ba3575cb0616661b3c649fc987e7838c74464e62718bef822f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 08f4cc11c5663ffe7a2874abd9e74f92936c778a806a5055bb2226991ab3823d
[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" "08f4cc11c5663ffe7a2874abd9e74f92936c778a806a5055bb2226991ab3823d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.59
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]    Compiling same-file v1.0.4
[INFO] [stderr]    Compiling nix v0.13.1
[INFO] [stderr]    Compiling log v0.4.7
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]    Compiling regex v1.1.9
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking unicode-segmentation v1.3.0
[INFO] [stderr]     Checking strsim v0.6.0
[INFO] [stderr]     Checking bitflags v0.9.1
[INFO] [stderr]     Checking ansi_term v0.9.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking simple-error v0.1.12
[INFO] [stderr]     Checking abortable_parser v0.2.3
[INFO] [stderr]     Checking bencher v0.1.5
[INFO] [stderr]     Checking aho-corasick v0.7.4
[INFO] [stderr]     Checking serde_yaml v0.8.9
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]    Compiling walkdir v2.2.8
[INFO] [stderr]     Checking regex-syntax v0.6.8
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking term_size v0.3.1
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking textwrap v0.8.0
[INFO] [stderr]    Compiling ucg v0.7.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking clap v2.26.2
[INFO] [stderr]     Checking rustyline v4.1.0
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 39.42s
[INFO] running `Command { std: "docker" "inspect" "08f4cc11c5663ffe7a2874abd9e74f92936c778a806a5055bb2226991ab3823d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08f4cc11c5663ffe7a2874abd9e74f92936c778a806a5055bb2226991ab3823d", kill_on_drop: false }`
[INFO] [stdout] 08f4cc11c5663ffe7a2874abd9e74f92936c778a806a5055bb2226991ab3823d