[INFO] fetching crate rserver 0.1.6...
[INFO] checking rserver-0.1.6 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate rserver 0.1.6 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate rserver 0.1.6
[INFO] finished tweaking crates.io crate rserver 0.1.6
[INFO] tweaked toml for crates.io crate rserver 0.1.6 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rserver 0.1.6 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 crates.io crate rserver 0.1.6 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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 028e8b8e1c2200051d009e10f9d319e6b2bdcbc13b2db90fec21df659ee01de6
[INFO] running `Command { std: "docker" "start" "-a" "028e8b8e1c2200051d009e10f9d319e6b2bdcbc13b2db90fec21df659ee01de6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "028e8b8e1c2200051d009e10f9d319e6b2bdcbc13b2db90fec21df659ee01de6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "028e8b8e1c2200051d009e10f9d319e6b2bdcbc13b2db90fec21df659ee01de6", kill_on_drop: false }`
[INFO] [stdout] 028e8b8e1c2200051d009e10f9d319e6b2bdcbc13b2db90fec21df659ee01de6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] c79dacd8d8d0f365e6a37d43cd144ed9c3dcbc8285872cf1589381d2fad87459
[INFO] running `Command { std: "docker" "start" "-a" "c79dacd8d8d0f365e6a37d43cd144ed9c3dcbc8285872cf1589381d2fad87459", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling unicode-ident v1.0.3
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling libc v0.2.132
[INFO] [stderr]    Compiling futures-core v0.3.24
[INFO] [stderr]    Compiling futures-task v0.3.24
[INFO] [stderr]    Compiling futures-channel v0.3.24
[INFO] [stderr]    Compiling futures-util v0.3.24
[INFO] [stderr]     Checking futures-sink v0.3.24
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling lock_api v0.4.8
[INFO] [stderr]     Checking futures-io v0.3.24
[INFO] [stderr]    Compiling unicode-segmentation v1.10.0
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]    Compiling tokio v1.21.0
[INFO] [stderr]     Checking once_cell v1.14.0
[INFO] [stderr]     Checking urlparse v0.7.3
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]     Checking parking_lot_core v0.9.3
[INFO] [stderr]     Checking mio v0.8.4
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking socket2 v0.4.7
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling futures-macro v0.3.24
[INFO] [stderr]    Compiling tokio-macros v1.8.0
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Checking futures-executor v0.3.24
[INFO] [stderr]     Checking futures v0.3.24
[INFO] [stderr]     Checking rserver v0.1.6 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/cli.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | /     /// Server host
[INFO] [stdout] 10 | |     #[structopt(short, long, default_value = "127.0.0.1")]
[INFO] [stdout] 11 | |     pub host: 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]   --> src/cli.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | /     /// Enable proxy flag
[INFO] [stdout] 18 | |     #[structopt(long, default_value = "false")]
[INFO] [stdout] 19 | |     pub enable_proxy: String,
[INFO] [stdout]    | |____________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/cli.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | /     /// Proxy host
[INFO] [stdout] 22 | |     #[structopt(long, required_if("enable-proxy", "true"))]
[INFO] [stdout] 23 | |     pub proxy_host: Option<String>,
[INFO] [stdout]    | |__________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rserver` (lib) 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<String, Infallible>
[INFO] [stdout]   --> src/cli.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | /     /// Server host
[INFO] [stdout] 10 | |     #[structopt(short, long, default_value = "127.0.0.1")]
[INFO] [stdout] 11 | |     pub host: 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]   --> src/cli.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | /     /// Enable proxy flag
[INFO] [stdout] 18 | |     #[structopt(long, default_value = "false")]
[INFO] [stdout] 19 | |     pub enable_proxy: String,
[INFO] [stdout]    | |____________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/cli.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | /     /// Proxy host
[INFO] [stdout] 22 | |     #[structopt(long, required_if("enable-proxy", "true"))]
[INFO] [stdout] 23 | |     pub proxy_host: Option<String>,
[INFO] [stdout]    | |__________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rserver` (lib test) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "c79dacd8d8d0f365e6a37d43cd144ed9c3dcbc8285872cf1589381d2fad87459", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c79dacd8d8d0f365e6a37d43cd144ed9c3dcbc8285872cf1589381d2fad87459", kill_on_drop: false }`
[INFO] [stdout] c79dacd8d8d0f365e6a37d43cd144ed9c3dcbc8285872cf1589381d2fad87459