[INFO] fetching crate fstrings-rust 1.0.1...
[INFO] testing fstrings-rust-1.0.1 against 1.90.0 for beta-1.91-3
[INFO] extracting crate fstrings-rust 1.0.1 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate fstrings-rust 1.0.1
[INFO] finished tweaking crates.io crate fstrings-rust 1.0.1
[INFO] tweaked toml for crates.io crate fstrings-rust 1.0.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate fstrings-rust 1.0.1 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate fstrings-rust 1.0.1 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fstrings-rust-proc-macro v1.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ded7f5b02e3ef050ff62b068a8d9bce6507935d303140e25748d966fdb4e37d5
[INFO] running `Command { std: "docker" "start" "-a" "ded7f5b02e3ef050ff62b068a8d9bce6507935d303140e25748d966fdb4e37d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ded7f5b02e3ef050ff62b068a8d9bce6507935d303140e25748d966fdb4e37d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ded7f5b02e3ef050ff62b068a8d9bce6507935d303140e25748d966fdb4e37d5", kill_on_drop: false }`
[INFO] [stdout] ded7f5b02e3ef050ff62b068a8d9bce6507935d303140e25748d966fdb4e37d5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6c4f0fd4d8609bbc091e405e644e5c6bf63951a28b408e6d72585fd0b5caf5ec
[INFO] running `Command { std: "docker" "start" "-a" "6c4f0fd4d8609bbc091e405e644e5c6bf63951a28b408e6d72585fd0b5caf5ec", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]    Compiling proc-macro-hack v0.5.15
[INFO] [stderr]    Compiling quote v1.0.4
[INFO] [stderr]    Compiling fstrings-rust-proc-macro v1.0.0
[INFO] [stderr]    Compiling fstrings-rust v1.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.60s
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/lib.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |           #[doc = $doc_string]
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 | /     with_doc! {
[INFO] [stdout] 26 | |         #[doc = include_str!("../README.md")]
[INFO] [stdout] 27 | |         extern {}
[INFO] [stdout]    | |         --------- rustdoc does not generate documentation for extern blocks
[INFO] [stdout] 28 | |     }
[INFO] [stdout]    | |_____- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `with_doc` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stdout]   --> src/lib.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |         extern {}
[INFO] [stdout]    |         ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(missing_abi)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6c4f0fd4d8609bbc091e405e644e5c6bf63951a28b408e6d72585fd0b5caf5ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c4f0fd4d8609bbc091e405e644e5c6bf63951a28b408e6d72585fd0b5caf5ec", kill_on_drop: false }`
[INFO] [stdout] 6c4f0fd4d8609bbc091e405e644e5c6bf63951a28b408e6d72585fd0b5caf5ec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a84a6d97eb75cb41e39659bff1771b3a648414d2d6b0b8f55d9b3a1a2b6e5593
[INFO] running `Command { std: "docker" "start" "-a" "a84a6d97eb75cb41e39659bff1771b3a648414d2d6b0b8f55d9b3a1a2b6e5593", kill_on_drop: false }`
[INFO] [stderr]    Compiling fstrings-rust v1.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/lib.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |           #[doc = $doc_string]
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 | /     with_doc! {
[INFO] [stdout] 26 | |         #[doc = include_str!("../README.md")]
[INFO] [stdout] 27 | |         extern {}
[INFO] [stdout]    | |         --------- rustdoc does not generate documentation for extern blocks
[INFO] [stdout] 28 | |     }
[INFO] [stdout]    | |_____- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `with_doc` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stdout]   --> src/lib.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |         extern {}
[INFO] [stdout]    |         ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(missing_abi)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `fstrings`
[INFO] [stdout]  --> examples/readme.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate fstrings;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `println_f` in this scope
[INFO] [stdout]  --> examples/readme.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     println_f!("Hello, {name}!");
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]  --> /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/macros.rs:138:1
[INFO] [stdout]   |
[INFO] [stdout]   = note: similarly named macro `println` defined here
[INFO] [stdout]   |
[INFO] [stdout] help: a macro with a similar name exists
[INFO] [stdout]   |
[INFO] [stdout] 9 -     println_f!("Hello, {name}!");
[INFO] [stdout] 9 +     println!("Hello, {name}!");
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this macro
[INFO] [stdout]   |
[INFO] [stdout] 1 + use fstrings_rust::println_f;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `f` in this scope
[INFO] [stdout]   --> examples/readme.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |         f!("Hello, {name}!"), // shorthand for String creation (Python-like)
[INFO] [stdout]    |         ^
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this macro
[INFO] [stdout]    |
[INFO] [stdout]  1 + use fstrings_rust::f;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `f` in this scope
[INFO] [stdout]   --> examples/readme.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |             f!("{hi}, {name}!", hi = "Hello"),
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this macro
[INFO] [stdout]    |
[INFO] [stdout]  1 + use fstrings_rust::f;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `f` in this scope
[INFO] [stdout]   --> examples/readme.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |             f!("Hello, {name}!", name = "Earth"),
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this macro
[INFO] [stdout]    |
[INFO] [stdout]  1 + use fstrings_rust::f;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `f` in this scope
[INFO] [stdout]   --> examples/readme.rs:33:13
[INFO] [stdout]    |
[INFO] [stdout] 33 |             f!("Hello, {foo.name}!"),
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this macro
[INFO] [stdout]    |
[INFO] [stdout]  1 + use fstrings_rust::f;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `f` in this scope
[INFO] [stdout]   --> examples/readme.rs:40:13
[INFO] [stdout]    |
[INFO] [stdout] 40 |             f!("Hello, {ft_and_name.1}!"),
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this macro
[INFO] [stdout]    |
[INFO] [stdout]  1 + use fstrings_rust::f;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `f` in this scope
[INFO] [stdout]   --> examples/readme.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |             f!("In this context {x=}"),
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this macro
[INFO] [stdout]    |
[INFO] [stdout]  1 + use fstrings_rust::f;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fstrings-rust` (example "readme") due to 8 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/lib.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |           #[doc = $doc_string]
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 | /     with_doc! {
[INFO] [stdout] 26 | |         #[doc = include_str!("../README.md")]
[INFO] [stdout] 27 | |         extern {}
[INFO] [stdout]    | |         --------- rustdoc does not generate documentation for extern blocks
[INFO] [stdout] 28 | |     }
[INFO] [stdout]    | |_____- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `with_doc` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stdout]   --> src/lib.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |         extern {}
[INFO] [stdout]    |         ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(missing_abi)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a84a6d97eb75cb41e39659bff1771b3a648414d2d6b0b8f55d9b3a1a2b6e5593", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a84a6d97eb75cb41e39659bff1771b3a648414d2d6b0b8f55d9b3a1a2b6e5593", kill_on_drop: false }`
[INFO] [stdout] a84a6d97eb75cb41e39659bff1771b3a648414d2d6b0b8f55d9b3a1a2b6e5593