[INFO] cloning repository https://github.com/derekdreery/cargo-docserve
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/derekdreery/cargo-docserve" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fderekdreery%2Fcargo-docserve", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fderekdreery%2Fcargo-docserve'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5763b37975d1a9b795aee566446099ce7479afbc
[INFO] checking derekdreery/cargo-docserve 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%2Fderekdreery%2Fcargo-docserve" "/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/derekdreery/cargo-docserve
[INFO] finished tweaking git repo https://github.com/derekdreery/cargo-docserve
[INFO] tweaked toml for git repo https://github.com/derekdreery/cargo-docserve written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/derekdreery/cargo-docserve 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/derekdreery/cargo-docserve 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] 01e60c3b6bc7a0ce3d357f53c18374a49a00159bd94a12fbfefc8494c56692fe
[INFO] running `Command { std: "docker" "start" "-a" "01e60c3b6bc7a0ce3d357f53c18374a49a00159bd94a12fbfefc8494c56692fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "01e60c3b6bc7a0ce3d357f53c18374a49a00159bd94a12fbfefc8494c56692fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01e60c3b6bc7a0ce3d357f53c18374a49a00159bd94a12fbfefc8494c56692fe", kill_on_drop: false }`
[INFO] [stdout] 01e60c3b6bc7a0ce3d357f53c18374a49a00159bd94a12fbfefc8494c56692fe
[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] 15d4c01ba79ceee9d1ff90c945faccd8314390423ea6bc46d7db16b573c68d15
[INFO] running `Command { std: "docker" "start" "-a" "15d4c01ba79ceee9d1ff90c945faccd8314390423ea6bc46d7db16b573c68d15", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling libc v0.2.99
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling futures-core v0.3.16
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]    Compiling futures-macro v0.3.16
[INFO] [stderr]    Compiling tokio v1.10.0
[INFO] [stderr]    Compiling futures-task v0.3.16
[INFO] [stderr]    Compiling futures-util v0.3.16
[INFO] [stderr]     Checking bitflags v1.3.1
[INFO] [stderr]     Checking tinyvec v1.3.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]     Checking futures-sink v0.3.16
[INFO] [stderr]    Compiling futures-channel v0.3.16
[INFO] [stderr]    Compiling mime_guess v2.0.3
[INFO] [stderr]     Checking tracing v0.1.26
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling serde_json v1.0.66
[INFO] [stderr]     Checking unicode-bidi v0.3.6
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking mio v0.7.13
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling camino v1.0.5
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking socket2 v0.4.1
[INFO] [stderr]     Checking inotify-sys v0.1.5
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking http-body v0.4.3
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking inotify v0.9.3
[INFO] [stderr]     Checking filetime v0.2.15
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking notify v5.0.0-pre.11
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking env_logger v0.8.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling structopt-derive v0.4.15
[INFO] [stderr]    Compiling qu-derive v0.2.1
[INFO] [stderr]     Checking tokio-util v0.6.7
[INFO] [stderr]     Checking structopt v0.3.22
[INFO] [stderr]     Checking qu v0.2.1
[INFO] [stderr]     Checking h2 v0.3.3
[INFO] [stderr]     Checking hyper v0.14.11
[INFO] [stderr]     Checking cargo-platform v0.1.2
[INFO] [stderr]     Checking cargo_metadata v0.14.0
[INFO] [stderr]     Checking hyper-staticfile v0.6.0
[INFO] [stderr]     Checking cargo-serve-docs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | /     /// Path to the cargo manifest at the root of the project (Cargo.toml)
[INFO] [stdout] 32 | |     #[structopt(name = "MANIFEST", short = "m", long)]
[INFO] [stdout] 33 | |     manifest: Option<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: std::result::Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | /     /// Add an extra file or directory to be watched
[INFO] [stdout] 35 | |     #[structopt(long = "watch-extra", name = "FILE")]
[INFO] [stdout] 36 | |     watch_extra: Vec<String>,
[INFO] [stdout]    | |____________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 | /     /// Arguments to pass to `cargo doc`. Pass flags after a `--`
[INFO] [stdout] 41 | |     #[structopt(name = "ARG")]
[INFO] [stdout] 42 | |     cargo_args: Vec<String>,
[INFO] [stdout]    | |___________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<hyper::service::util::ServiceFn<{closure@src/main.rs:148:52: 148:77}, Body>, Infallible>
[INFO] [stdout]    --> src/main.rs:147:28
[INFO] [stdout]     |
[INFO] [stdout] 147 |                   async move {
[INFO] [stdout]     |  ____________________________^
[INFO] [stdout] 148 | |                     Ok::<_, Infallible>(service_fn(move |req: Request<Body>| {
[INFO] [stdout] 149 | |                         // clone for each request
[INFO] [stdout] 150 | |                         let config = config.clone();
[INFO] [stdout] 151 | |                         handle(config, req)
[INFO] [stdout] 152 | |                     }))
[INFO] [stdout] 153 | |                 }
[INFO] [stdout]     | |_________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<hyper::service::util::ServiceFn<{closure@src/main.rs:148:52: 148:77}, Body>, Infallible>
[INFO] [stdout]    --> src/main.rs:148:21
[INFO] [stdout]     |
[INFO] [stdout] 148 | /                     Ok::<_, Infallible>(service_fn(move |req: Request<Body>| {
[INFO] [stdout] 149 | |                         // clone for each request
[INFO] [stdout] 150 | |                         let config = config.clone();
[INFO] [stdout] 151 | |                         handle(config, req)
[INFO] [stdout] 152 | |                     }))
[INFO] [stdout]     | |_______________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cargo-serve-docs` (bin "cargo-serve-docs" test) due to 5 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | /     /// Path to the cargo manifest at the root of the project (Cargo.toml)
[INFO] [stdout] 32 | |     #[structopt(name = "MANIFEST", short = "m", long)]
[INFO] [stdout] 33 | |     manifest: Option<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: std::result::Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | /     /// Add an extra file or directory to be watched
[INFO] [stdout] 35 | |     #[structopt(long = "watch-extra", name = "FILE")]
[INFO] [stdout] 36 | |     watch_extra: Vec<String>,
[INFO] [stdout]    | |____________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 | /     /// Arguments to pass to `cargo doc`. Pass flags after a `--`
[INFO] [stdout] 41 | |     #[structopt(name = "ARG")]
[INFO] [stdout] 42 | |     cargo_args: Vec<String>,
[INFO] [stdout]    | |___________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<hyper::service::util::ServiceFn<{closure@src/main.rs:148:52: 148:77}, Body>, Infallible>
[INFO] [stdout]    --> src/main.rs:147:28
[INFO] [stdout]     |
[INFO] [stdout] 147 |                   async move {
[INFO] [stdout]     |  ____________________________^
[INFO] [stdout] 148 | |                     Ok::<_, Infallible>(service_fn(move |req: Request<Body>| {
[INFO] [stdout] 149 | |                         // clone for each request
[INFO] [stdout] 150 | |                         let config = config.clone();
[INFO] [stdout] 151 | |                         handle(config, req)
[INFO] [stdout] 152 | |                     }))
[INFO] [stdout] 153 | |                 }
[INFO] [stdout]     | |_________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<hyper::service::util::ServiceFn<{closure@src/main.rs:148:52: 148:77}, Body>, Infallible>
[INFO] [stdout]    --> src/main.rs:148:21
[INFO] [stdout]     |
[INFO] [stdout] 148 | /                     Ok::<_, Infallible>(service_fn(move |req: Request<Body>| {
[INFO] [stdout] 149 | |                         // clone for each request
[INFO] [stdout] 150 | |                         let config = config.clone();
[INFO] [stdout] 151 | |                         handle(config, req)
[INFO] [stdout] 152 | |                     }))
[INFO] [stdout]     | |_______________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cargo-serve-docs` (bin "cargo-serve-docs") due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "15d4c01ba79ceee9d1ff90c945faccd8314390423ea6bc46d7db16b573c68d15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15d4c01ba79ceee9d1ff90c945faccd8314390423ea6bc46d7db16b573c68d15", kill_on_drop: false }`
[INFO] [stdout] 15d4c01ba79ceee9d1ff90c945faccd8314390423ea6bc46d7db16b573c68d15
