[INFO] fetching crate mdtranslation-cli 0.1.0...
[INFO] checking mdtranslation-cli-0.1.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate mdtranslation-cli 0.1.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate mdtranslation-cli 0.1.0
[INFO] finished tweaking crates.io crate mdtranslation-cli 0.1.0
[INFO] tweaked toml for crates.io crate mdtranslation-cli 0.1.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mdtranslation-cli 0.1.0 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 mdtranslation-cli 0.1.0 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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] a05bbed01744be7847759e774631dc066b4a6095df893a116fc5b8fe1c15ef14
[INFO] running `Command { std: "docker" "start" "-a" "a05bbed01744be7847759e774631dc066b4a6095df893a116fc5b8fe1c15ef14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a05bbed01744be7847759e774631dc066b4a6095df893a116fc5b8fe1c15ef14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a05bbed01744be7847759e774631dc066b4a6095df893a116fc5b8fe1c15ef14", kill_on_drop: false }`
[INFO] [stdout] a05bbed01744be7847759e774631dc066b4a6095df893a116fc5b8fe1c15ef14
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 64f6ca84d01bc59f8ea522bf1171c4545676085263187743c488503399bb5ff6
[INFO] running `Command { std: "docker" "start" "-a" "64f6ca84d01bc59f8ea522bf1171c4545676085263187743c488503399bb5ff6", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling pulldown-cmark v0.8.0
[INFO] [stderr]    Compiling anyhow v1.0.40
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking mdtranslation v0.1.0
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]     Checking structopt v0.3.21
[INFO] [stderr]     Checking mdtranslation-cli v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/bin/mdtranslation_extract.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | /     /// Default language
[INFO] [stdout] 14 | |     #[structopt(short, long)]
[INFO] [stdout] 15 | |     language: 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] [stderr] error: could not compile `mdtranslation-cli` (bin "mdtranslation_extract" test) due to 1 previous error
[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/bin/mdtranslation_extract.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | /     /// Default language
[INFO] [stdout] 14 | |     #[structopt(short, long)]
[INFO] [stdout] 15 | |     language: 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] [stderr] error: could not compile `mdtranslation-cli` (bin "mdtranslation_translate" test) due to 3 previous errors
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/bin/mdtranslation_translate.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | /     /// Language
[INFO] [stdout] 14 | |     #[structopt(short, long)]
[INFO] [stdout] 15 | |     language: 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/bin/mdtranslation_translate.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | /     /// Default language
[INFO] [stdout] 18 | |     #[structopt(short, long)]
[INFO] [stdout] 19 | |     default_language: Option<String>,
[INFO] [stdout]    | |____________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/bin/mdtranslation_translate.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | /     #[structopt(short, long)]
[INFO] [stdout] 22 | |     translation: PathBuf,
[INFO] [stdout]    | |________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/bin/mdtranslation_translate.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | /     /// Language
[INFO] [stdout] 14 | |     #[structopt(short, long)]
[INFO] [stdout] 15 | |     language: 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/bin/mdtranslation_translate.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | /     /// Default language
[INFO] [stdout] 18 | |     #[structopt(short, long)]
[INFO] [stdout] 19 | |     default_language: Option<String>,
[INFO] [stdout]    | |____________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/bin/mdtranslation_translate.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | /     #[structopt(short, long)]
[INFO] [stdout] 22 | |     translation: PathBuf,
[INFO] [stdout]    | |________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mdtranslation-cli` (bin "mdtranslation_translate") due to 3 previous errors
[INFO] [stderr] error: could not compile `mdtranslation-cli` (bin "mdtranslation_extract") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "64f6ca84d01bc59f8ea522bf1171c4545676085263187743c488503399bb5ff6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64f6ca84d01bc59f8ea522bf1171c4545676085263187743c488503399bb5ff6", kill_on_drop: false }`
[INFO] [stdout] 64f6ca84d01bc59f8ea522bf1171c4545676085263187743c488503399bb5ff6