[INFO] fetching crate stblib 0.7.3... [INFO] testing stblib-0.7.3 against beta-2025-10-28 for beta-1.92-2 [INFO] extracting crate stblib 0.7.3 into /workspace/builds/worker-6-tc2/source [INFO] started tweaking crates.io crate stblib 0.7.3 [INFO] finished tweaking crates.io crate stblib 0.7.3 [INFO] tweaked toml for crates.io crate stblib 0.7.3 written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate stblib 0.7.3 on toolchain beta-2025-10-28 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate stblib 0.7.3 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" "+beta-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 160dcf4a08114ecdb89f1158a5056b2bbf8c662257cda9fe03a79a118249d73c [INFO] running `Command { std: "docker" "start" "-a" "160dcf4a08114ecdb89f1158a5056b2bbf8c662257cda9fe03a79a118249d73c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "160dcf4a08114ecdb89f1158a5056b2bbf8c662257cda9fe03a79a118249d73c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "160dcf4a08114ecdb89f1158a5056b2bbf8c662257cda9fe03a79a118249d73c", kill_on_drop: false }` [INFO] [stdout] 160dcf4a08114ecdb89f1158a5056b2bbf8c662257cda9fe03a79a118249d73c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 17eb934654e6eb8448109def4011d0aa7c0c7d3a304301af541cb2b6dfcfd6b3 [INFO] running `Command { std: "docker" "start" "-a" "17eb934654e6eb8448109def4011d0aa7c0c7d3a304301af541cb2b6dfcfd6b3", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.172 [INFO] [stderr] Compiling proc-macro2 v1.0.93 [INFO] [stderr] Compiling unicode-ident v1.0.12 [INFO] [stderr] Compiling autocfg v1.2.0 [INFO] [stderr] Compiling memchr v2.7.2 [INFO] [stderr] Compiling bytes v1.9.0 [INFO] [stderr] Compiling pin-project-lite v0.2.14 [INFO] [stderr] Compiling once_cell v1.19.0 [INFO] [stderr] Compiling itoa v1.0.11 [INFO] [stderr] Compiling futures-core v0.3.30 [INFO] [stderr] Compiling cc v1.0.92 [INFO] [stderr] Compiling futures-sink v0.3.30 [INFO] [stderr] Compiling vcpkg v0.2.15 [INFO] [stderr] Compiling pkg-config v0.3.30 [INFO] [stderr] Compiling fnv v1.0.7 [INFO] [stderr] Compiling futures-io v0.3.30 [INFO] [stderr] Compiling pin-utils v0.1.0 [INFO] [stderr] Compiling futures-task v0.3.30 [INFO] [stderr] Compiling equivalent v1.0.1 [INFO] [stderr] Compiling hashbrown v0.14.3 [INFO] [stderr] Compiling serde v1.0.219 [INFO] [stderr] Compiling percent-encoding v2.3.1 [INFO] [stderr] Compiling openssl v0.10.64 [INFO] [stderr] Compiling foreign-types-shared v0.1.1 [INFO] [stderr] Compiling cfg-if v1.0.0 [INFO] [stderr] Compiling tracing-core v0.1.32 [INFO] [stderr] Compiling httparse v1.10.1 [INFO] [stderr] Compiling bitflags v2.5.0 [INFO] [stderr] Compiling foreign-types v0.3.2 [INFO] [stderr] Compiling try-lock v0.2.5 [INFO] [stderr] Compiling log v0.4.21 [INFO] [stderr] Compiling tinyvec_macros v0.1.1 [INFO] [stderr] Compiling tower-service v0.3.3 [INFO] [stderr] Compiling native-tls v0.2.11 [INFO] [stderr] Compiling want v0.3.1 [INFO] [stderr] Compiling tracing v0.1.40 [INFO] [stderr] Compiling tinyvec v1.6.0 [INFO] [stderr] Compiling futures-channel v0.3.30 [INFO] [stderr] Compiling smallvec v1.13.2 [INFO] [stderr] Compiling ryu v1.0.17 [INFO] [stderr] Compiling openssl-probe v0.1.5 [INFO] [stderr] Compiling form_urlencoded v1.2.1 [INFO] [stderr] Compiling sync_wrapper v1.0.1 [INFO] [stderr] Compiling slab v0.4.9 [INFO] [stderr] Compiling http v1.1.0 [INFO] [stderr] Compiling num-traits v0.2.19 [INFO] [stderr] Compiling ipnet v2.9.0 [INFO] [stderr] Compiling indexmap v2.2.6 [INFO] [stderr] Compiling unicode-bidi v0.3.15 [INFO] [stderr] Compiling base64 v0.22.0 [INFO] [stderr] Compiling aho-corasick v1.1.3 [INFO] [stderr] Compiling tower-layer v0.3.3 [INFO] [stderr] Compiling futures-util v0.3.30 [INFO] [stderr] Compiling regex-syntax v0.8.5 [INFO] [stderr] Compiling quote v1.0.36 [INFO] [stderr] Compiling thiserror v2.0.12 [INFO] [stderr] Compiling zeroize v1.8.1 [INFO] [stderr] Compiling option-ext v0.2.0 [INFO] [stderr] Compiling iri-string v0.7.8 [INFO] [stderr] Compiling eyre v0.6.12 [INFO] [stderr] Compiling serde_json v1.0.141 [INFO] [stderr] Compiling rustls-pki-types v1.12.0 [INFO] [stderr] Compiling encoding_rs v0.8.34 [INFO] [stderr] Compiling mio v1.0.1 [INFO] [stderr] Compiling socket2 v0.5.10 [INFO] [stderr] Compiling syn v2.0.96 [INFO] [stderr] Compiling unicode-normalization v0.1.23 [INFO] [stderr] Compiling dirs-sys v0.5.0 [INFO] [stderr] Compiling iana-time-zone v0.1.60 [INFO] [stderr] Compiling openssl-sys v0.9.102 [INFO] [stderr] Compiling tokio v1.46.1 [INFO] [stderr] Compiling unsafe-libyaml v0.2.11 [INFO] [stderr] Compiling lazy_static v1.4.0 [INFO] [stderr] Compiling mime v0.3.17 [INFO] [stderr] Compiling indenter v0.3.3 [INFO] [stderr] Compiling http-body v1.0.0 [INFO] [stderr] Compiling dirs v6.0.0 [INFO] [stderr] Compiling http-body-util v0.1.1 [INFO] [stderr] Compiling idna v0.5.0 [INFO] [stderr] Compiling chrono v0.4.41 [INFO] [stderr] Compiling regex-automata v0.4.8 [INFO] [stderr] Compiling url v2.5.0 [INFO] [stderr] Compiling tokio-util v0.7.10 [INFO] [stderr] Compiling tower v0.5.2 [INFO] [stderr] Compiling regex v1.11.1 [INFO] [stderr] Compiling serde_derive v1.0.219 [INFO] [stderr] Compiling openssl-macros v0.1.1 [INFO] [stderr] Compiling thiserror-impl v2.0.12 [INFO] [stderr] Compiling tower-http v0.6.6 [INFO] [stderr] Compiling shellwords v1.1.0 [INFO] [stderr] Compiling h2 v0.4.4 [INFO] [stderr] Compiling hyper v1.6.0 [INFO] [stderr] Compiling hyper-util v0.1.13 [INFO] [stderr] Compiling tokio-native-tls v0.3.1 [INFO] [stderr] Compiling hyper-tls v0.6.0 [INFO] [stderr] Compiling serde_urlencoded v0.7.1 [INFO] [stderr] Compiling os_info v3.12.0 [INFO] [stderr] Compiling serde_yaml v0.9.34+deprecated [INFO] [stderr] Compiling reqwest v0.12.22 [INFO] [stderr] Compiling stblib v0.7.3 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 33.68s [INFO] running `Command { std: "docker" "inspect" "17eb934654e6eb8448109def4011d0aa7c0c7d3a304301af541cb2b6dfcfd6b3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "17eb934654e6eb8448109def4011d0aa7c0c7d3a304301af541cb2b6dfcfd6b3", kill_on_drop: false }` [INFO] [stdout] 17eb934654e6eb8448109def4011d0aa7c0c7d3a304301af541cb2b6dfcfd6b3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2025-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] fe93732717c0f6dc4312063de4a3338c6531ba45d64f82dfb3e675bcc8f51acd [INFO] running `Command { std: "docker" "start" "-a" "fe93732717c0f6dc4312063de4a3338c6531ba45d64f82dfb3e675bcc8f51acd", kill_on_drop: false }` [INFO] [stderr] Compiling stblib v0.7.3 (/opt/rustwide/workdir) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 1.31s [INFO] running `Command { std: "docker" "inspect" "fe93732717c0f6dc4312063de4a3338c6531ba45d64f82dfb3e675bcc8f51acd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fe93732717c0f6dc4312063de4a3338c6531ba45d64f82dfb3e675bcc8f51acd", kill_on_drop: false }` [INFO] [stdout] fe93732717c0f6dc4312063de4a3338c6531ba45d64f82dfb3e675bcc8f51acd [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2025-10-28" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 5ad37a25c698d2505f9a606fcd5b1f4eccc62617c8e85eb035f096323e2fde3b [INFO] running `Command { std: "docker" "start" "-a" "5ad37a25c698d2505f9a606fcd5b1f4eccc62617c8e85eb035f096323e2fde3b", kill_on_drop: false }` [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.22s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/stblib-d90b9bf0f7275afa) [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 stblib [INFO] [stdout] [INFO] [stdout] running 5 tests [INFO] [stdout] test src/file.rs - file::write_to_file (line 30) ... FAILED [INFO] [stdout] test src/file.rs - file::read_file (line 9) ... FAILED [INFO] [stdout] test src/file.rs - file::FileStruct::write (line 119) ... ok [INFO] [stdout] test src/file.rs - file::FileStruct::read (line 85) ... ok [INFO] [stdout] test src/file.rs - file::FileStruct::new (line 59) ... ok [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- src/file.rs - file::write_to_file (line 30) 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/file.rs:33:45 [INFO] [stdout] | [INFO] [stdout] 4 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_file_rs_30_0() { [INFO] [stdout] | ----------------------------------- this function should return `Result` or `Option` to accept `?` [INFO] [stdout] 5 | use stblib::file::write_to_file; [INFO] [stdout] 6 | write_to_file("example.txt", "Hello World!")?; [INFO] [stdout] | ^ cannot use the `?` operator in a function that returns `()` [INFO] [stdout] | [INFO] [stdout] help: consider adding return type [INFO] [stdout] | [INFO] [stdout] 4 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_file_rs_30_0() -> Result<(), Box> { [INFO] [stdout] 5 | use stblib::file::write_to_file; [INFO] [stdout] 6 | write_to_file("example.txt", "Hello World!")?; [INFO] [stdout] 7 + 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] ---- src/file.rs - file::read_file (line 9) 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/file.rs:12:39 [INFO] [stdout] | [INFO] [stdout] 4 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_file_rs_9_0() { [INFO] [stdout] | ---------------------------------- this function should return `Result` or `Option` to accept `?` [INFO] [stdout] 5 | use stblib::file::read_file; [INFO] [stdout] 6 | let content = read_file("example.txt")?; [INFO] [stdout] | ^ cannot use the `?` operator in a function that returns `()` [INFO] [stdout] | [INFO] [stdout] help: consider adding return type [INFO] [stdout] | [INFO] [stdout] 4 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_file_rs_9_0() -> Result<(), Box> { [INFO] [stdout] 5 | use stblib::file::read_file; [INFO] [stdout] 6 | let content = read_file("example.txt")?; [INFO] [stdout] 7 + 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/file.rs - file::read_file (line 9) [INFO] [stdout] src/file.rs - file::write_to_file (line 30) [INFO] [stdout] [INFO] [stdout] test result: FAILED. 3 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.52s [INFO] [stdout] [INFO] [stdout] all doctests ran in 0.64s; merged doctests compilation took 0.12s [INFO] [stderr] error: doctest failed, to rerun pass `--doc` [INFO] running `Command { std: "docker" "inspect" "5ad37a25c698d2505f9a606fcd5b1f4eccc62617c8e85eb035f096323e2fde3b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5ad37a25c698d2505f9a606fcd5b1f4eccc62617c8e85eb035f096323e2fde3b", kill_on_drop: false }` [INFO] [stdout] 5ad37a25c698d2505f9a606fcd5b1f4eccc62617c8e85eb035f096323e2fde3b