[INFO] fetching crate flltr 0.2.1...
[INFO] checking flltr-0.2.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate flltr 0.2.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate flltr 0.2.1
[INFO] finished tweaking crates.io crate flltr 0.2.1
[INFO] tweaked toml for crates.io crate flltr 0.2.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate flltr 0.2.1 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 flltr 0.2.1 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] 65460a38a7af18961c6eb216e7e2febcc3e801459cc5744fc7416fa42cb11c2a
[INFO] running `Command { std: "docker" "start" "-a" "65460a38a7af18961c6eb216e7e2febcc3e801459cc5744fc7416fa42cb11c2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "65460a38a7af18961c6eb216e7e2febcc3e801459cc5744fc7416fa42cb11c2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65460a38a7af18961c6eb216e7e2febcc3e801459cc5744fc7416fa42cb11c2a", kill_on_drop: false }`
[INFO] [stdout] 65460a38a7af18961c6eb216e7e2febcc3e801459cc5744fc7416fa42cb11c2a
[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] e1b4a1a773e259945f728ef62ecd0c69bf0e58d41ee870c252a36f740c0552d2
[INFO] running `Command { std: "docker" "start" "-a" "e1b4a1a773e259945f728ef62ecd0c69bf0e58d41ee870c252a36f740c0552d2", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[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 v1.0.15
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Checking flltr v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | /     ///      use STRING to filling                      
[INFO] [stdout] 25 | |     #[structopt(name = "start=STRING", short = "s", long = "start", default_value = "")]
[INFO] [stdout] 26 | |     str_start_fill: 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/main.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | /     ///      use STRING to filling                      
[INFO] [stdout] 29 | |     #[structopt(name = "end=STRING", short = "e", long = "end", default_value = "")]
[INFO] [stdout] 30 | |     str_end_fill: String,
[INFO] [stdout]    | |________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | /     ///      use color STRING for start, fill, end arguments                      
[INFO] [stdout] 36 | |     #[structopt(name = "color=STRING", short = "C", long = "color", default_value = "black")]
[INFO] [stdout] 37 | |     color: String,
[INFO] [stdout]    | |_________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | /     ///      use STRING to filling                      
[INFO] [stdout] 25 | |     #[structopt(name = "start=STRING", short = "s", long = "start", default_value = "")]
[INFO] [stdout] 26 | |     str_start_fill: 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/main.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | /     ///      use STRING to filling                      
[INFO] [stdout] 29 | |     #[structopt(name = "end=STRING", short = "e", long = "end", default_value = "")]
[INFO] [stdout] 30 | |     str_end_fill: String,
[INFO] [stdout]    | |________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | /     ///      use color STRING for start, fill, end arguments                      
[INFO] [stdout] 36 | |     #[structopt(name = "color=STRING", short = "C", long = "color", default_value = "black")]
[INFO] [stdout] 37 | |     color: String,
[INFO] [stdout]    | |_________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `flltr` (bin "flltr" test) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `flltr` (bin "flltr") due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "e1b4a1a773e259945f728ef62ecd0c69bf0e58d41ee870c252a36f740c0552d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1b4a1a773e259945f728ef62ecd0c69bf0e58d41ee870c252a36f740c0552d2", kill_on_drop: false }`
[INFO] [stdout] e1b4a1a773e259945f728ef62ecd0c69bf0e58d41ee870c252a36f740c0552d2