[INFO] cloning repository https://github.com/derekdreery/i3ctl
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/derekdreery/i3ctl" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fderekdreery%2Fi3ctl", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fderekdreery%2Fi3ctl'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e7fb282ea9aa63fc7b00b67d293f1be7c4a56599
[INFO] checking derekdreery/i3ctl against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fderekdreery%2Fi3ctl" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/derekdreery/i3ctl on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/derekdreery/i3ctl
[INFO] finished tweaking git repo https://github.com/derekdreery/i3ctl
[INFO] tweaked toml for git repo https://github.com/derekdreery/i3ctl written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/derekdreery/i3ctl already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pretty_env_logger v0.3.0
[INFO] [stderr]   Downloaded clap-verbosity-flag v0.2.0
[INFO] [stderr]   Downloaded i3ipc v0.10.1
[INFO] [stderr]   Downloaded directories v1.0.2
[INFO] [stderr]   Downloaded termcolor v1.0.4
[INFO] [stderr]   Downloaded config v0.9.2
[INFO] [stderr]   Downloaded nom v4.2.2
[INFO] [stderr]   Downloaded libc v0.2.50
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e02e1d88e6bafde9a53ff544724978fc63aab1880f7a001ac56c7b11a4954f74
[INFO] running `Command { std: "docker" "start" "-a" "e02e1d88e6bafde9a53ff544724978fc63aab1880f7a001ac56c7b11a4954f74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e02e1d88e6bafde9a53ff544724978fc63aab1880f7a001ac56c7b11a4954f74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e02e1d88e6bafde9a53ff544724978fc63aab1880f7a001ac56c7b11a4954f74", kill_on_drop: false }`
[INFO] [stdout] e02e1d88e6bafde9a53ff544724978fc63aab1880f7a001ac56c7b11a4954f74
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 84da282bd06a829fef418c2da5b3613ad9a9b5365702babb1b56c610bd78897a
[INFO] running `Command { std: "docker" "start" "-a" "84da282bd06a829fef418c2da5b3613ad9a9b5365702babb1b56c610bd78897a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]    Compiling libc v0.2.50
[INFO] [stderr]    Compiling syn v0.15.29
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling regex v1.1.2
[INFO] [stderr]    Compiling cc v1.0.31
[INFO] [stderr]    Compiling serde v1.0.89
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]     Checking quick-error v1.2.2
[INFO] [stderr]     Checking regex-syntax v0.6.5
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]    Compiling backtrace v0.3.14
[INFO] [stderr]     Checking serde v0.8.23
[INFO] [stderr]     Checking termcolor v1.0.4
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]    Compiling unicode-segmentation v1.2.1
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking humantime v1.2.0
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking rustc-demangle v0.1.13
[INFO] [stderr]     Checking itoa v0.4.3
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking linked-hash-map v0.5.1
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking nom v4.2.2
[INFO] [stderr]     Checking rust-ini v0.13.0
[INFO] [stderr]     Checking yaml-rust v0.4.3
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking directories v1.0.2
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking num-integer v0.1.39
[INFO] [stderr]     Checking serde_test v0.8.23
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking linked-hash-map v0.3.0
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stderr]     Checking serde-hjson v0.8.2
[INFO] [stderr]     Checking env_logger v0.6.1
[INFO] [stderr]     Checking pretty_env_logger v0.3.0
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling serde_derive v1.0.89
[INFO] [stderr]    Compiling structopt-derive v0.2.15
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking structopt v0.2.15
[INFO] [stderr]     Checking clap-verbosity-flag v0.2.0
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]     Checking i3ipc v0.10.1
[INFO] [stderr]     Checking config v0.9.2
[INFO] [stderr]     Checking i3ctl v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.83s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v4.2.2
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "84da282bd06a829fef418c2da5b3613ad9a9b5365702babb1b56c610bd78897a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84da282bd06a829fef418c2da5b3613ad9a9b5365702babb1b56c610bd78897a", kill_on_drop: false }`
[INFO] [stdout] 84da282bd06a829fef418c2da5b3613ad9a9b5365702babb1b56c610bd78897a