[INFO] fetching crate qrcode-cli 0.5.0...
[INFO] checking qrcode-cli-0.5.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate qrcode-cli 0.5.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate qrcode-cli 0.5.0
[INFO] finished tweaking crates.io crate qrcode-cli 0.5.0
[INFO] tweaked toml for crates.io crate qrcode-cli 0.5.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate qrcode-cli 0.5.0 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 qrcode-cli 0.5.0 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 4339365d9f3b0e3930b9d7c605f905d3a553d312dd201bc040d75cd5d2efa1f6
[INFO] running `Command { std: "docker" "start" "-a" "4339365d9f3b0e3930b9d7c605f905d3a553d312dd201bc040d75cd5d2efa1f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4339365d9f3b0e3930b9d7c605f905d3a553d312dd201bc040d75cd5d2efa1f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4339365d9f3b0e3930b9d7c605f905d3a553d312dd201bc040d75cd5d2efa1f6", kill_on_drop: false }`
[INFO] [stdout] 4339365d9f3b0e3930b9d7c605f905d3a553d312dd201bc040d75cd5d2efa1f6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] aa8e1f043a994f7a39a2a61d5612cba172852bc1b703cbbb2b4c56e7fbd74789
[INFO] running `Command { std: "docker" "start" "-a" "aa8e1f043a994f7a39a2a61d5612cba172852bc1b703cbbb2b4c56e7fbd74789", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking once_cell v1.9.0
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]     Checking tinyvec v1.5.1
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]    Compiling rustls v0.20.4
[INFO] [stderr]     Checking unicode-bidi v0.3.7
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]     Checking textwrap v0.14.2
[INFO] [stderr]     Checking flate2 v1.0.22
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking chunked_transfer v1.4.0
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking webpki v0.22.0
[INFO] [stderr]     Checking sct v0.7.0
[INFO] [stderr]     Checking webpki-roots v0.22.2
[INFO] [stderr]    Compiling clap_derive v3.1.2
[INFO] [stderr]     Checking clap v3.1.3
[INFO] [stderr]     Checking ureq v2.4.0
[INFO] [stderr]     Checking qrcode-cli v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `qrcode-cli` (bin "qrcode-cli") due to 3 previous errors
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | /     #[clap(short = 'd', long = "data")]
[INFO] [stdout] 11 | |     data: 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] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | /     #[clap(long = "foreground", short = 'f', default_value = "black")]
[INFO] [stdout] 28 | |     foreground: String,
[INFO] [stdout]    | |______________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | /     #[clap(long = "background", short = 'b', default_value = "white")]
[INFO] [stdout] 32 | |     background: String,
[INFO] [stdout]    | |______________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | /     #[clap(short = 'd', long = "data")]
[INFO] [stdout] 11 | |     data: 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<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | /     #[clap(long = "foreground", short = 'f', default_value = "black")]
[INFO] [stdout] 28 | |     foreground: String,
[INFO] [stdout]    | |______________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | /     #[clap(long = "background", short = 'b', default_value = "white")]
[INFO] [stdout] 32 | |     background: String,
[INFO] [stdout]    | |______________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `qrcode-cli` (bin "qrcode-cli" test) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "aa8e1f043a994f7a39a2a61d5612cba172852bc1b703cbbb2b4c56e7fbd74789", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa8e1f043a994f7a39a2a61d5612cba172852bc1b703cbbb2b4c56e7fbd74789", kill_on_drop: false }`
[INFO] [stdout] aa8e1f043a994f7a39a2a61d5612cba172852bc1b703cbbb2b4c56e7fbd74789