[INFO] cloning repository https://github.com/bartslinger/states3
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bartslinger/states3" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbartslinger%2Fstates3", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbartslinger%2Fstates3'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8584f8c516d661c4558d9790d38ff2518868abc6
[INFO] checking bartslinger/states3 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%2Fbartslinger%2Fstates3" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/bartslinger/states3
[INFO] finished tweaking git repo https://github.com/bartslinger/states3
[INFO] tweaked toml for git repo https://github.com/bartslinger/states3 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/bartslinger/states3 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/bartslinger/states3 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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 12167010a9a0f71df5cd0d0b1f13cb6fcc67000906af19a9bf0f2bcfacbcfb08
[INFO] running `Command { std: "docker" "start" "-a" "12167010a9a0f71df5cd0d0b1f13cb6fcc67000906af19a9bf0f2bcfacbcfb08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "12167010a9a0f71df5cd0d0b1f13cb6fcc67000906af19a9bf0f2bcfacbcfb08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12167010a9a0f71df5cd0d0b1f13cb6fcc67000906af19a9bf0f2bcfacbcfb08", kill_on_drop: false }`
[INFO] [stdout] 12167010a9a0f71df5cd0d0b1f13cb6fcc67000906af19a9bf0f2bcfacbcfb08
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 46aef64477592aa8c86da13b80973e8c50bdb9a8db7467fcfefbfa12a6889b56
[INFO] running `Command { std: "docker" "start" "-a" "46aef64477592aa8c86da13b80973e8c50bdb9a8db7467fcfefbfa12a6889b56", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling futures-core v0.3.17
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]    Compiling async-trait v0.1.51
[INFO] [stderr]     Checking futures-sink v0.3.17
[INFO] [stderr]    Compiling tokio v1.11.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]    Compiling tokio-macros v1.3.0
[INFO] [stderr]     Checking tokio-util v0.6.8
[INFO] [stderr]     Checking tokio-stream v0.1.7
[INFO] [stderr]     Checking states3 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<xstate::TaskOutput, TaskError>
[INFO] [stdout]   --> src/traffic_light/states.rs:58:29
[INFO] [stdout]    |
[INFO] [stdout] 58 |           Box::pin(async move {
[INFO] [stdout]    |  _____________________________^
[INFO] [stdout] 59 | |             let mut cnt = 0;
[INFO] [stdout] 60 | |             loop {
[INFO] [stdout] 61 | |                 cnt += 1;
[INFO] [stdout] ...  |
[INFO] [stdout] 79 | |             Ok(TaskOutput::Ok)
[INFO] [stdout] 80 | |         })
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<xstate::TaskOutput, TaskError>
[INFO] [stdout]   --> src/traffic_light/states.rs:74:32
[INFO] [stdout]    |
[INFO] [stdout] 74 |                         return Ok(TaskOutput::Aborted)
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<xstate::TaskOutput, TaskError>
[INFO] [stdout]   --> src/traffic_light/states.rs:79:13
[INFO] [stdout]    |
[INFO] [stdout] 79 |             Ok(TaskOutput::Ok)
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `states3` (bin "traffic_light" test) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<xstate::TaskOutput, TaskError>
[INFO] [stdout]   --> src/traffic_light/states.rs:58:29
[INFO] [stdout]    |
[INFO] [stdout] 58 |           Box::pin(async move {
[INFO] [stdout]    |  _____________________________^
[INFO] [stdout] 59 | |             let mut cnt = 0;
[INFO] [stdout] 60 | |             loop {
[INFO] [stdout] 61 | |                 cnt += 1;
[INFO] [stdout] ...  |
[INFO] [stdout] 79 | |             Ok(TaskOutput::Ok)
[INFO] [stdout] 80 | |         })
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<xstate::TaskOutput, TaskError>
[INFO] [stdout]   --> src/traffic_light/states.rs:74:32
[INFO] [stdout]    |
[INFO] [stdout] 74 |                         return Ok(TaskOutput::Aborted)
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<xstate::TaskOutput, TaskError>
[INFO] [stdout]   --> src/traffic_light/states.rs:79:13
[INFO] [stdout]    |
[INFO] [stdout] 79 |             Ok(TaskOutput::Ok)
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `states3` (bin "traffic_light") due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "46aef64477592aa8c86da13b80973e8c50bdb9a8db7467fcfefbfa12a6889b56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46aef64477592aa8c86da13b80973e8c50bdb9a8db7467fcfefbfa12a6889b56", kill_on_drop: false }`
[INFO] [stdout] 46aef64477592aa8c86da13b80973e8c50bdb9a8db7467fcfefbfa12a6889b56
