[INFO] cloning repository https://github.com/Lab-Brat/ego
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Lab-Brat/ego" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLab-Brat%2Fego", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLab-Brat%2Fego'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7f0ec3817b432e220f9181ed027e3c3ee92699cd
[INFO] checking Lab-Brat/ego against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLab-Brat%2Fego" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Lab-Brat/ego
[INFO] finished tweaking git repo https://github.com/Lab-Brat/ego
[INFO] tweaked toml for git repo https://github.com/Lab-Brat/ego written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Lab-Brat/ego on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Lab-Brat/ego 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2e183fc433b0c4f3e93ba7d54fbf2790a94fec9e3ac457a08da0c132f2e51d7c
[INFO] running `Command { std: "docker" "start" "-a" "2e183fc433b0c4f3e93ba7d54fbf2790a94fec9e3ac457a08da0c132f2e51d7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e183fc433b0c4f3e93ba7d54fbf2790a94fec9e3ac457a08da0c132f2e51d7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e183fc433b0c4f3e93ba7d54fbf2790a94fec9e3ac457a08da0c132f2e51d7c", kill_on_drop: false }`
[INFO] [stdout] 2e183fc433b0c4f3e93ba7d54fbf2790a94fec9e3ac457a08da0c132f2e51d7c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c66713eb9f62c64d9d2a9a1af645d254196004b72f6ff93466c5ad80f01fa8aa
[INFO] running `Command { std: "docker" "start" "-a" "c66713eb9f62c64d9d2a9a1af645d254196004b72f6ff93466c5ad80f01fa8aa", kill_on_drop: false }`
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking predicates-core v1.0.3
[INFO] [stderr]     Checking regex-syntax v0.6.26
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking termtree v0.2.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking float-cmp v0.9.0
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking predicates-tree v1.0.5
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking regex v1.5.6
[INFO] [stderr]     Checking predicates v2.1.1
[INFO] [stderr]     Checking ego v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking assert_cmd v2.0.4
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/lib.rs:153:21
[INFO] [stdout]     |
[INFO] [stdout] 153 |         .map(|line| line.unwrap().parse::<String>().unwrap())
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ego` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "c66713eb9f62c64d9d2a9a1af645d254196004b72f6ff93466c5ad80f01fa8aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c66713eb9f62c64d9d2a9a1af645d254196004b72f6ff93466c5ad80f01fa8aa", kill_on_drop: false }`
[INFO] [stdout] c66713eb9f62c64d9d2a9a1af645d254196004b72f6ff93466c5ad80f01fa8aa