[INFO] fetching crate stblib 0.7.3...
[INFO] testing stblib-0.7.3 against 1.99.0-beta.8 for beta-1.100-2
[INFO] extracting crate stblib 0.7.3 into /workspace/builds/worker-4-tc1/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-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate stblib 0.7.3 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "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" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded winrt-notification v0.5.1
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3111399a4047eeb3a02b7a90e478d715f38a8c6669b5c4b49d30a17385265909" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 5cfc4aa768f9fc5d2431907ceebbd38e69b5d7b909f799353f8eae10909c3be3
[INFO] running `Command { std: "docker" "start" "5cfc4aa768f9fc5d2431907ceebbd38e69b5d7b909f799353f8eae10909c3be3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5cfc4aa768f9fc5d2431907ceebbd38e69b5d7b909f799353f8eae10909c3be3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "5cfc4aa768f9fc5d2431907ceebbd38e69b5d7b909f799353f8eae10909c3be3" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5cfc4aa768f9fc5d2431907ceebbd38e69b5d7b909f799353f8eae10909c3be3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "5cfc4aa768f9fc5d2431907ceebbd38e69b5d7b909f799353f8eae10909c3be3" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.172
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling autocfg v1.2.0
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[INFO] [stderr]    Compiling native-tls v0.2.11
[INFO] [stderr]    Compiling tinyvec v1.6.0
[INFO] [stderr]    Compiling http v1.1.0
[INFO] [stderr]    Compiling futures-util v0.3.30
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling socket2 v0.5.10
[INFO] [stderr]    Compiling mio v1.0.1
[INFO] [stderr]    Compiling indexmap v2.2.6
[INFO] [stderr]    Compiling syn v2.0.96
[INFO] [stderr]    Compiling openssl-sys v0.9.102
[INFO] [stderr]    Compiling tokio v1.46.1
[INFO] [stderr]    Compiling http-body v1.0.0
[INFO] [stderr]    Compiling ryu v1.0.17
[INFO] [stderr]    Compiling unicode-normalization v0.1.23
[INFO] [stderr]    Compiling openssl v0.10.64
[INFO] [stderr]    Compiling aho-corasick v1.1.3
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[INFO] [stderr]    Compiling sync_wrapper v1.0.1
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[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling idna v0.5.0
[INFO] [stderr]    Compiling http-body-util v0.1.1
[INFO] [stderr]    Compiling thiserror v2.0.12
[INFO] [stderr]    Compiling iri-string v0.7.8
[INFO] [stderr]    Compiling serde_json v1.0.141
[INFO] [stderr]    Compiling zeroize v1.8.1
[INFO] [stderr]    Compiling eyre v0.6.12
[INFO] [stderr]    Compiling rustls-pki-types v1.12.0
[INFO] [stderr]    Compiling dirs-sys v0.5.0
[INFO] [stderr]    Compiling url v2.5.0
[INFO] [stderr]    Compiling regex-automata v0.4.8
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[INFO] [stderr]    Compiling chrono v0.4.41
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[INFO] [stderr]    Compiling tokio-util v0.7.10
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[INFO] [stderr]    Compiling serde_derive v1.0.219
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[INFO] [stderr]    Compiling hyper-tls v0.6.0
[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 1m 14s
[INFO] running `Command { std: "docker" "inspect" "5cfc4aa768f9fc5d2431907ceebbd38e69b5d7b909f799353f8eae10909c3be3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "5cfc4aa768f9fc5d2431907ceebbd38e69b5d7b909f799353f8eae10909c3be3" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling stblib v0.7.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `Command { std: "docker" "inspect" "5cfc4aa768f9fc5d2431907ceebbd38e69b5d7b909f799353f8eae10909c3be3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "5cfc4aa768f9fc5d2431907ceebbd38e69b5d7b909f799353f8eae10909c3be3" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.17s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/stblib-65ea295d9d535646)
[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::new (line 59) ... ok
[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] 
[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] 31 | 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] 32 | use stblib::file::write_to_file;
[INFO] [stdout] 33 | 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] 31 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_file_rs_30_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 32 | use stblib::file::write_to_file;
[INFO] [stdout] 33 | write_to_file("example.txt", "Hello World!")?;
[INFO] [stdout] 34 +     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] 10 | 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] 11 | use stblib::file::read_file;
[INFO] [stdout] 12 | 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] 10 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_file_rs_9_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 11 | use stblib::file::read_file;
[INFO] [stdout] 12 | let content = read_file("example.txt")?;
[INFO] [stdout] 13 +     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 0.76s
[INFO] [stdout] 
[INFO] [stdout] all doctests ran in 0.90s; merged doctests compilation took 0.15s
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "5cfc4aa768f9fc5d2431907ceebbd38e69b5d7b909f799353f8eae10909c3be3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5cfc4aa768f9fc5d2431907ceebbd38e69b5d7b909f799353f8eae10909c3be3", kill_on_drop: false }`
[INFO] [stdout] 5cfc4aa768f9fc5d2431907ceebbd38e69b5d7b909f799353f8eae10909c3be3
