[INFO] cloning repository https://github.com/ungtb10d/just
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ungtb10d/just" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fungtb10d%2Fjust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fungtb10d%2Fjust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7680b1997973de2c8d5ea1072507cf191e698c04
[INFO] checking ungtb10d/just 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%2Fungtb10d%2Fjust" "/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/ungtb10d/just
[INFO] removed 0 missing tests
[INFO] finished tweaking git repo https://github.com/ungtb10d/just
[INFO] tweaked toml for git repo https://github.com/ungtb10d/just written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ungtb10d/just 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/ungtb10d/just 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] 63092d8f551101073f26ea5290bfabe3d2c2cc3322d761498d4f1febad617fa5
[INFO] running `Command { std: "docker" "start" "-a" "63092d8f551101073f26ea5290bfabe3d2c2cc3322d761498d4f1febad617fa5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "63092d8f551101073f26ea5290bfabe3d2c2cc3322d761498d4f1febad617fa5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63092d8f551101073f26ea5290bfabe3d2c2cc3322d761498d4f1febad617fa5", kill_on_drop: false }`
[INFO] [stdout] 63092d8f551101073f26ea5290bfabe3d2c2cc3322d761498d4f1febad617fa5
[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] 0d094b54f6eda82ce804872aa4c9f944e1f5a04fa876c0c060942ecb1d15d1e4
[INFO] running `Command { std: "docker" "start" "-a" "0d094b54f6eda82ce804872aa4c9f944e1f5a04fa876c0c060942ecb1d15d1e4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling libc v0.2.132
[INFO] [stderr]    Compiling unicode-ident v1.0.3
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking aho-corasick v0.7.19
[INFO] [stderr]    Compiling rustversion v1.0.9
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]     Checking generic-array v0.14.6
[INFO] [stderr]    Compiling serde_derive v1.0.144
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]    Compiling serde v1.0.144
[INFO] [stderr]     Checking block-buffer v0.10.3
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]    Compiling serde_json v1.0.85
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking fastrand v1.8.0
[INFO] [stderr]    Compiling camino v1.1.1
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]     Checking digest v0.10.3
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]     Checking ryu v1.0.11
[INFO] [stderr]     Checking cpufeatures v0.2.5
[INFO] [stderr]     Checking itoa v1.0.3
[INFO] [stderr]     Checking unicode-segmentation v1.9.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking sha2 v0.10.5
[INFO] [stderr]    Compiling pulldown-cmark v0.9.2
[INFO] [stderr]     Checking executable-path v1.0.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking lexiclean v0.0.1
[INFO] [stderr]     Checking target v2.0.0
[INFO] [stderr]     Checking similar v2.2.0
[INFO] [stderr]     Checking typed-arena v2.0.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking term_size v0.3.2
[INFO] [stderr]     Checking tempfile v3.3.0
[INFO] [stderr]     Checking nix v0.25.0
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking edit-distance v2.1.0
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking uuid v1.1.2
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking either v1.8.0
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stderr]     Checking yansi v0.5.1
[INFO] [stderr]     Checking diff v0.1.13
[INFO] [stderr]     Checking which v4.3.0
[INFO] [stderr]     Checking temptree v0.2.0
[INFO] [stderr]     Checking pretty_assertions v1.3.0
[INFO] [stderr]     Checking cradle v0.2.2
[INFO] [stderr]     Checking ctrlc v3.2.3
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]     Checking pulldown-cmark-to-cmark v10.0.4
[INFO] [stderr]     Checking generate-book v0.0.0 (/opt/rustwide/workdir/bin/generate-book)
[INFO] [stderr]    Compiling strum_macros v0.24.3
[INFO] [stderr]    Compiling snafu-derive v0.7.1
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Checking ref-type v0.0.0 (/opt/rustwide/workdir/bin/ref-type)
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]  --> bin/ref-type/src/main.rs:6:3
[INFO] [stdout]   |
[INFO] [stdout] 6 | /   #[structopt(long)]
[INFO] [stdout] 7 | |   reference: String,
[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<String, Infallible>
[INFO] [stdout]  --> bin/ref-type/src/main.rs:6:3
[INFO] [stdout]   |
[INFO] [stdout] 6 | /   #[structopt(long)]
[INFO] [stdout] 7 | |   reference: String,
[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 `ref-type` (bin "ref-type") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `ref-type` (bin "ref-type" test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "0d094b54f6eda82ce804872aa4c9f944e1f5a04fa876c0c060942ecb1d15d1e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d094b54f6eda82ce804872aa4c9f944e1f5a04fa876c0c060942ecb1d15d1e4", kill_on_drop: false }`
[INFO] [stdout] 0d094b54f6eda82ce804872aa4c9f944e1f5a04fa876c0c060942ecb1d15d1e4