[INFO] crate utf8-decode 1.0.1 is already in cache [INFO] testing utf8-decode-1.0.1 against beta-2020-07-24 for beta-1.46-1 [INFO] extracting crate utf8-decode 1.0.1 into /workspace/builds/worker-0/source [INFO] validating manifest of crates.io crate utf8-decode 1.0.1 on toolchain beta-2020-07-24 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking crates.io crate utf8-decode 1.0.1 [INFO] finished tweaking crates.io crate utf8-decode 1.0.1 [INFO] tweaked toml for crates.io crate utf8-decode 1.0.1 written to /workspace/builds/worker-0/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 54401fad270f35950da046f0f1166ee3ef136b0085571f91b5528eb912e685ca [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "54401fad270f35950da046f0f1166ee3ef136b0085571f91b5528eb912e685ca", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "54401fad270f35950da046f0f1166ee3ef136b0085571f91b5528eb912e685ca", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "54401fad270f35950da046f0f1166ee3ef136b0085571f91b5528eb912e685ca", kill_on_drop: false }` [INFO] [stdout] 54401fad270f35950da046f0f1166ee3ef136b0085571f91b5528eb912e685ca [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4517b216f27df89c336e91949e17eeba1a6d83840fe8ae095c7bbbbc6fd64082 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "4517b216f27df89c336e91949e17eeba1a6d83840fe8ae095c7bbbbc6fd64082", kill_on_drop: false }` [INFO] [stderr] Compiling utf8-decode v1.0.1 (/opt/rustwide/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.24s [INFO] running `Command { std: "docker" "inspect" "4517b216f27df89c336e91949e17eeba1a6d83840fe8ae095c7bbbbc6fd64082", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4517b216f27df89c336e91949e17eeba1a6d83840fe8ae095c7bbbbc6fd64082", kill_on_drop: false }` [INFO] [stdout] 4517b216f27df89c336e91949e17eeba1a6d83840fe8ae095c7bbbbc6fd64082 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 497df6aab2ae9c2ecd54984b4bd01f00d71819424fbbdb1c28dd77d0a2a9a1bb [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "497df6aab2ae9c2ecd54984b4bd01f00d71819424fbbdb1c28dd77d0a2a9a1bb", kill_on_drop: false }` [INFO] [stderr] Compiling utf8-decode v1.0.1 (/opt/rustwide/workdir) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.62s [INFO] running `Command { std: "docker" "inspect" "497df6aab2ae9c2ecd54984b4bd01f00d71819424fbbdb1c28dd77d0a2a9a1bb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "497df6aab2ae9c2ecd54984b4bd01f00d71819424fbbdb1c28dd77d0a2a9a1bb", kill_on_drop: false }` [INFO] [stdout] 497df6aab2ae9c2ecd54984b4bd01f00d71819424fbbdb1c28dd77d0a2a9a1bb [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 6cbeac45fff7c6e04f56dc78bd5e61b6ce76dfee4da43cb942f79acb427fc78c [INFO] running `Command { std: "docker" "start" "-a" "6cbeac45fff7c6e04f56dc78bd5e61b6ce76dfee4da43cb942f79acb427fc78c", kill_on_drop: false }` [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.01s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/utf8_decode-6651eadc761acac7 [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 [INFO] [stdout] [INFO] [stderr] Doc-tests utf8-decode [INFO] [stdout] [INFO] [stdout] running 4 tests [INFO] [stdout] test src/lib.rs - UnsafeDecoder (line 141) ... FAILED [INFO] [stdout] test src/safe.rs - safe::Decoder (line 80) ... FAILED [INFO] [stdout] test src/lib.rs - (line 9) ... ok [INFO] [stdout] test src/lib.rs - (line 35) ... ok [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- src/lib.rs - UnsafeDecoder (line 141) stdout ---- [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `File` [INFO] [stdout] --> src/lib.rs:142:12 [INFO] [stdout] | [INFO] [stdout] 3 | let file = File::open("file.txt")?; [INFO] [stdout] | ^^^^ not found in this scope [INFO] [stdout] | [INFO] [stdout] help: consider importing this struct [INFO] [stdout] | [INFO] [stdout] 2 | use std::fs::File; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `UnsafeDecoder` [INFO] [stdout] --> src/lib.rs:144:15 [INFO] [stdout] | [INFO] [stdout] 5 | let decoder = UnsafeDecoder::new(file.bytes()); [INFO] [stdout] | ^^^^^^^^^^^^^ not found in this scope [INFO] [stdout] | [INFO] [stdout] help: consider importing this struct [INFO] [stdout] | [INFO] [stdout] 2 | use utf8_decode::UnsafeDecoder; [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:142:12 [INFO] [stdout] | [INFO] [stdout] 2 | / fn main() { [INFO] [stdout] 3 | | let file = File::open("file.txt")?; [INFO] [stdout] | | ^^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a function that returns `()` [INFO] [stdout] 4 | | [INFO] [stdout] 5 | | let decoder = UnsafeDecoder::new(file.bytes()); [INFO] [stdout] ... | [INFO] [stdout] 10 | | } [INFO] [stdout] 11 | | } [INFO] [stdout] | |_- this function should return `Result` or `Option` to accept `?` [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[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:148:17 [INFO] [stdout] | [INFO] [stdout] 2 | / fn main() { [INFO] [stdout] 3 | | let file = File::open("file.txt")?; [INFO] [stdout] 4 | | [INFO] [stdout] 5 | | let decoder = UnsafeDecoder::new(file.bytes()); [INFO] [stdout] ... | [INFO] [stdout] 9 | | string.push(c?); [INFO] [stdout] | | ^^ cannot use the `?` operator in a function that returns `()` [INFO] [stdout] 10 | | } [INFO] [stdout] 11 | | } [INFO] [stdout] | |_- this function should return `Result` or `Option` to accept `?` [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 4 previous errors [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0277, E0433. [INFO] [stdout] For more information about an error, try `rustc --explain E0277`. [INFO] [stdout] Couldn't compile the test. [INFO] [stdout] ---- src/safe.rs - safe::Decoder (line 80) stdout ---- [INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `Decoder` [INFO] [stdout] --> src/safe.rs:83:15 [INFO] [stdout] | [INFO] [stdout] 5 | let decoder = Decoder::new(bytes.iter().cloned()); [INFO] [stdout] | ^^^^^^^ not found in this scope [INFO] [stdout] | [INFO] [stdout] help: consider importing this struct [INFO] [stdout] | [INFO] [stdout] 2 | use utf8_decode::Decoder; [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/safe.rs:87:17 [INFO] [stdout] | [INFO] [stdout] 2 | / fn main() { [INFO] [stdout] 3 | | let bytes = [72, 101, 108, 108, 111, 32, 87, 111, 114, 108, 100, 33]; [INFO] [stdout] 4 | | [INFO] [stdout] 5 | | let decoder = Decoder::new(bytes.iter().cloned()); [INFO] [stdout] ... | [INFO] [stdout] 9 | | string.push(c?); [INFO] [stdout] | | ^^ cannot use the `?` operator in a function that returns `()` [INFO] [stdout] ... | [INFO] [stdout] 12 | | println!("{}", string); [INFO] [stdout] 13 | | } [INFO] [stdout] | |_- this function should return `Result` or `Option` to accept `?` [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, E0433. [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 - UnsafeDecoder (line 141) [INFO] [stdout] src/safe.rs - safe::Decoder (line 80) [INFO] [stdout] [INFO] [stdout] test result: FAILED. 2 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass '--doc' [INFO] running `Command { std: "docker" "inspect" "6cbeac45fff7c6e04f56dc78bd5e61b6ce76dfee4da43cb942f79acb427fc78c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6cbeac45fff7c6e04f56dc78bd5e61b6ce76dfee4da43cb942f79acb427fc78c", kill_on_drop: false }` [INFO] [stdout] 6cbeac45fff7c6e04f56dc78bd5e61b6ce76dfee4da43cb942f79acb427fc78c