[INFO] crate svpng 0.1.1 is already in cache [INFO] extracting crate svpng 0.1.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/svpng/0.1.1 [INFO] extracting crate svpng 0.1.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/svpng/0.1.1 [INFO] validating manifest of svpng-0.1.1 on toolchain 1.37.0 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of svpng-0.1.1 on toolchain beta-2019-08-13 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing svpng-0.1.1 [INFO] removed 1 missing examples [INFO] finished frobbing svpng-0.1.1 [INFO] frobbed toml for svpng-0.1.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/svpng/0.1.1/Cargo.toml [INFO] started frobbing svpng-0.1.1 [INFO] removed 1 missing examples [INFO] finished frobbing svpng-0.1.1 [INFO] frobbed toml for svpng-0.1.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/svpng/0.1.1/Cargo.toml [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing svpng-0.1.1 against 1.37.0 for beta-1.38-1 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/svpng/0.1.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"` [INFO] [stdout] 61dbd796e67c5dda65e5d2cf8beec93fe67952e661679bbd51db0c002d9ebc71 [INFO] running `"docker" "start" "-a" "61dbd796e67c5dda65e5d2cf8beec93fe67952e661679bbd51db0c002d9ebc71"` [INFO] [stderr] Compiling svpng v0.1.1 (/opt/crater/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.28s [INFO] running `"docker" "inspect" "61dbd796e67c5dda65e5d2cf8beec93fe67952e661679bbd51db0c002d9ebc71"` [INFO] running `"docker" "rm" "-f" "61dbd796e67c5dda65e5d2cf8beec93fe67952e661679bbd51db0c002d9ebc71"` [INFO] [stdout] 61dbd796e67c5dda65e5d2cf8beec93fe67952e661679bbd51db0c002d9ebc71 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/svpng/0.1.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen" "--no-run"` [INFO] [stdout] aa64cbbd0a5c9c7b1ae0a00dcfffefa94eb922f554b1230779eaa632da11f3b3 [INFO] running `"docker" "start" "-a" "aa64cbbd0a5c9c7b1ae0a00dcfffefa94eb922f554b1230779eaa632da11f3b3"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling svpng v0.1.1 (/opt/crater/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.65s [INFO] running `"docker" "inspect" "aa64cbbd0a5c9c7b1ae0a00dcfffefa94eb922f554b1230779eaa632da11f3b3"` [INFO] running `"docker" "rm" "-f" "aa64cbbd0a5c9c7b1ae0a00dcfffefa94eb922f554b1230779eaa632da11f3b3"` [INFO] [stdout] aa64cbbd0a5c9c7b1ae0a00dcfffefa94eb922f554b1230779eaa632da11f3b3 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/svpng/0.1.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen"` [INFO] [stdout] c6c3b51dec7998ccb8fad8df4d1cba9881c46b32c67a3f608f959fb606156665 [INFO] running `"docker" "start" "-a" "c6c3b51dec7998ccb8fad8df4d1cba9881c46b32c67a3f608f959fb606156665"` [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.01s [INFO] [stderr] Running /opt/crater/target/debug/deps/svpng-f7864d17bd770d5b [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stdout] test tests::crc32_test ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stderr] Doc-tests svpng [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stdout] test src/lib.rs - svpng (line 11) ... FAILED [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- src/lib.rs - svpng (line 11) stdout ---- [INFO] [stdout] error[E0423]: expected function, found module `svpng` [INFO] [stdout] --> src/lib.rs:21:1 [INFO] [stdout] | [INFO] [stdout] 13 | svpng("rgb.png", 256, 256, &pix, false)?; [INFO] [stdout] | ^^^^^ not a function [INFO] [stdout] help: possible better candidate is found in another module, you can import it into scope [INFO] [stdout] | [INFO] [stdout] 4 | use svpng::svpng; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `std::ops::Try`) [INFO] [stdout] --> src/lib.rs:21:1 [INFO] [stdout] | [INFO] [stdout] 13 | svpng("rgb.png", 256, 256, &pix, false)?; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a function that returns `()` [INFO] [stdout] | [INFO] [stdout] = help: the trait `std::ops::Try` is not implemented for `()` [INFO] [stdout] = note: required by `std::ops::Try::from_error` [INFO] [stdout] [INFO] [stdout] error: aborting due to 2 previous errors [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0277, E0423. [INFO] [stdout] For more information about an error, try `rustc --explain E0277`. [INFO] [stdout] Couldn't compile the test. [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] src/lib.rs - svpng (line 11) [INFO] [stdout] [INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass '--doc' [INFO] running `"docker" "inspect" "c6c3b51dec7998ccb8fad8df4d1cba9881c46b32c67a3f608f959fb606156665"` [INFO] running `"docker" "rm" "-f" "c6c3b51dec7998ccb8fad8df4d1cba9881c46b32c67a3f608f959fb606156665"` [INFO] [stdout] c6c3b51dec7998ccb8fad8df4d1cba9881c46b32c67a3f608f959fb606156665