[INFO] fetching crate qr-label-generator 0.1.0...
[INFO] testing qr-label-generator-0.1.0 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-8
[INFO] extracting crate qr-label-generator 0.1.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate qr-label-generator 0.1.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate qr-label-generator 0.1.0
[INFO] tweaked toml for crates.io crate qr-label-generator 0.1.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate qr-label-generator 0.1.0 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate qr-label-generator 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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d4188df32fe2a9332a4135a6a6c08504bf3c2b692d2ef26a819aadfa9ebac902
[INFO] running `Command { std: "docker" "start" "-a" "d4188df32fe2a9332a4135a6a6c08504bf3c2b692d2ef26a819aadfa9ebac902", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d4188df32fe2a9332a4135a6a6c08504bf3c2b692d2ef26a819aadfa9ebac902", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4188df32fe2a9332a4135a6a6c08504bf3c2b692d2ef26a819aadfa9ebac902", kill_on_drop: false }`
[INFO] [stdout] d4188df32fe2a9332a4135a6a6c08504bf3c2b692d2ef26a819aadfa9ebac902
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "-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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 59bd27dd012a7bd76bc17d512aa212a5e1accb0bb10f4fa2592ed0a3e94a7221
[INFO] running `Command { std: "docker" "start" "-a" "59bd27dd012a7bd76bc17d512aa212a5e1accb0bb10f4fa2592ed0a3e94a7221", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling memchr v2.7.6
[INFO] [stderr]    Compiling crc32fast v1.5.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling weezl v0.1.10
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]    Compiling unicode-ident v1.0.20
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling adler32 v1.2.0
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling simd-adler32 v0.3.7
[INFO] [stderr]    Compiling color_quant v1.1.0
[INFO] [stderr]    Compiling regex-automata v0.4.13
[INFO] [stderr]    Compiling powerfmt v0.2.0
[INFO] [stderr]    Compiling adler2 v2.0.1
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling bytemuck v1.24.0
[INFO] [stderr]    Compiling miniz_oxide v0.8.9
[INFO] [stderr]    Compiling rayon v1.11.0
[INFO] [stderr]    Compiling deranged v0.5.5
[INFO] [stderr]    Compiling time-core v0.1.6
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling num-conv v0.1.0
[INFO] [stderr]    Compiling miniz_oxide v0.3.7
[INFO] [stderr]    Compiling deflate v0.8.6
[INFO] [stderr]    Compiling encoding_rs v0.8.35
[INFO] [stderr]    Compiling linked-hash-map v0.5.6
[INFO] [stderr]    Compiling ttf-parser v0.19.2
[INFO] [stderr]    Compiling md5 v0.7.0
[INFO] [stderr]    Compiling gif v0.11.4
[INFO] [stderr]    Compiling scoped_threadpool v0.1.9
[INFO] [stderr]    Compiling csv-core v0.1.13
[INFO] [stderr]    Compiling flate2 v1.1.5
[INFO] [stderr]    Compiling syn v2.0.108
[INFO] [stderr]    Compiling png v0.16.8
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling image v0.24.9
[INFO] [stderr]    Compiling owned_ttf_parser v0.19.0
[INFO] [stderr]    Compiling num-iter v0.1.45
[INFO] [stderr]    Compiling bstr v1.12.0
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling time v0.3.44
[INFO] [stderr]    Compiling pom v3.4.0
[INFO] [stderr]    Compiling jpeg-decoder v0.1.22
[INFO] [stderr]    Compiling tiff v0.6.1
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]    Compiling csv v1.4.0
[INFO] [stderr]    Compiling lopdf v0.31.0
[INFO] [stderr]    Compiling qrcode v0.13.0
[INFO] [stderr]    Compiling image v0.23.14
[INFO] [stderr]    Compiling printpdf v0.7.0
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling qr-label-generator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 30.33s
[INFO] running `Command { std: "docker" "inspect" "59bd27dd012a7bd76bc17d512aa212a5e1accb0bb10f4fa2592ed0a3e94a7221", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59bd27dd012a7bd76bc17d512aa212a5e1accb0bb10f4fa2592ed0a3e94a7221", kill_on_drop: false }`
[INFO] [stdout] 59bd27dd012a7bd76bc17d512aa212a5e1accb0bb10f4fa2592ed0a3e94a7221
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "-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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 59a84e9dc60ab30a62c7e8f151bc571976d1efd812da92a83c00ea211a73cc99
[INFO] running `Command { std: "docker" "start" "-a" "59a84e9dc60ab30a62c7e8f151bc571976d1efd812da92a83c00ea211a73cc99", kill_on_drop: false }`
[INFO] [stderr]    Compiling qr-label-generator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.77s
[INFO] running `Command { std: "docker" "inspect" "59a84e9dc60ab30a62c7e8f151bc571976d1efd812da92a83c00ea211a73cc99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59a84e9dc60ab30a62c7e8f151bc571976d1efd812da92a83c00ea211a73cc99", kill_on_drop: false }`
[INFO] [stdout] 59a84e9dc60ab30a62c7e8f151bc571976d1efd812da92a83c00ea211a73cc99
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "-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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 72ddb8afec377e9e264b3f6b969067eb69940e49c1e8cdee5a9999ff12e28bc1
[INFO] running `Command { std: "docker" "start" "-a" "72ddb8afec377e9e264b3f6b969067eb69940e49c1e8cdee5a9999ff12e28bc1", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/qr_label_generator-b65dc112e70f5062)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests qr_label_generator
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/qr.rs - qr::QrGenerator::generate_single (line 67) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/qr.rs - qr::QrGenerator::generate_single (line 67) stdout ----
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]   --> src/qr.rs:71:58
[INFO] [stdout]    |
[INFO] [stdout] 68 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_qr_rs_67_0() {
[INFO] [stdout]    |                                      --------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 71 | gen.generate_single("https://example.com", "qr.png", 300)?;
[INFO] [stdout]    |                                                          ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]    |
[INFO] [stdout] 68 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_qr_rs_67_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 69 | use qr_label_generator::QrGenerator;
[INFO] [stdout] 70 | let gen = QrGenerator::new();
[INFO] [stdout] 71 | gen.generate_single("https://example.com", "qr.png", 300)?;
[INFO] [stdout] 72 +     Ok(())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/qr.rs - qr::QrGenerator::generate_single (line 67)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.10s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "72ddb8afec377e9e264b3f6b969067eb69940e49c1e8cdee5a9999ff12e28bc1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72ddb8afec377e9e264b3f6b969067eb69940e49c1e8cdee5a9999ff12e28bc1", kill_on_drop: false }`
[INFO] [stdout] 72ddb8afec377e9e264b3f6b969067eb69940e49c1e8cdee5a9999ff12e28bc1