[INFO] fetching crate fstrings 0.2.4-rc2...
[INFO] fixing fstrings-0.2.4-rc2 against try#622891a4e29178280638a6b63a8908bde2c0c854+cargoflags=-Zfix-edition=end=2015,2024 for pr-157817-2
[INFO] extracting crate fstrings 0.2.4-rc2 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate fstrings 0.2.4-rc2
[INFO] finished tweaking crates.io crate fstrings 0.2.4-rc2
[INFO] tweaked toml for crates.io crate fstrings 0.2.4-rc2 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate fstrings 0.2.4-rc2 on toolchain 622891a4e29178280638a6b63a8908bde2c0c854
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate fstrings 0.2.4-rc2 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" "+622891a4e29178280638a6b63a8908bde2c0c854" "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/source:/opt/rustwide/workdir:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] c3f377f8f8fdf41832b62d3a38fdef36a7e58903d81f5e80c27c2a1686b268ca
[INFO] running `Command { std: "docker" "start" "c3f377f8f8fdf41832b62d3a38fdef36a7e58903d81f5e80c27c2a1686b268ca", 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" "c3f377f8f8fdf41832b62d3a38fdef36a7e58903d81f5e80c27c2a1686b268ca" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c3f377f8f8fdf41832b62d3a38fdef36a7e58903d81f5e80c27c2a1686b268ca", 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=" "-e" "RUSTDOCFLAGS=" "-w" "/opt/rustwide/workdir" "--user" "0:0" "c3f377f8f8fdf41832b62d3a38fdef36a7e58903d81f5e80c27c2a1686b268ca" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "fix" "--allow-no-vcs" "--allow-dirty" "--frozen" "--all" "--all-targets" "--message-format=json" "-Zfix-edition=end=2015,2024", kill_on_drop: false }`
[INFO] [stderr] crater-edition-check: migrating to next edition
[INFO] [stderr]    Migrating Cargo.toml from 2018 edition to 2021
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling fstrings-proc-macro v0.2.4-rc2
[INFO] [stderr]     Checking fstrings v0.2.4-rc2 (/opt/rustwide/workdir)
[INFO] [stderr]    Migrating src/lib.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/readme.rs from 2018 edition to 2021
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.06s
[INFO] [stderr] crater-edition-check: fstrings v0.2.4-rc2 (/opt/rustwide/workdir) updating edition from 2018 to 2021
[INFO] [stderr]     Checking fstrings v0.2.4-rc2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/lib.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |           #[doc = $doc_string]
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 27 | /     with_doc! {
[INFO] [stdout] 28 | |         #[doc = include_str!("../README.md")]
[INFO] [stdout] 29 | |         extern {}
[INFO] [stdout]    | |         --------- rustdoc does not generate documentation for extern blocks
[INFO] [stdout] 30 | |     }
[INFO] [stdout]    | |_____- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` (part of `#[warn(unused)]`) 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:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |         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] warning: unused doc comment
[INFO] [stdout]   --> src/lib.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |           #[doc = $doc_string]
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 27 | /     with_doc! {
[INFO] [stdout] 28 | |         #[doc = include_str!("../README.md")]
[INFO] [stdout] 29 | |         extern {}
[INFO] [stdout]    | |         --------- rustdoc does not generate documentation for extern blocks
[INFO] [stdout] 30 | |     }
[INFO] [stdout]    | |_____- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` (part of `#[warn(unused)]`) 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:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |         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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.29s
[INFO] [stderr] crater-edition-check: migrating to next edition
[INFO] [stderr]    Migrating Cargo.toml from 2018 edition to 2021
[INFO] [stderr]     Checking fstrings v0.2.4-rc2 (/opt/rustwide/workdir)
[INFO] [stderr]    Migrating src/lib.rs from 2021 edition to 2024
[INFO] [stderr]        Fixed src/lib.rs (3 fixes)
[INFO] [stderr]    Migrating examples/readme.rs from 2021 edition to 2024
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.01s
[INFO] [stderr] crater-edition-check: fstrings v0.2.4-rc2 (/opt/rustwide/workdir) updating edition from 2021 to 2024
[INFO] [stderr]     Checking fstrings v0.2.4-rc2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/lib.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |           #[doc = $doc_string]
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 27 | /     with_doc! {
[INFO] [stdout] 28 | |         #[doc = include_str!("../README.md")]
[INFO] [stdout] 29 | |         unsafe extern {}
[INFO] [stdout]    | |         ---------------- rustdoc does not generate documentation for extern blocks
[INFO] [stdout] 30 | |     }
[INFO] [stdout]    | |_____- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` (part of `#[warn(unused)]`) 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:29:16
[INFO] [stdout]    |
[INFO] [stdout] 29 |         unsafe 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] warning: unused doc comment
[INFO] [stdout]   --> src/lib.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |           #[doc = $doc_string]
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 27 | /     with_doc! {
[INFO] [stdout] 28 | |         #[doc = include_str!("../README.md")]
[INFO] [stdout] 29 | |         unsafe extern {}
[INFO] [stdout]    | |         ---------------- rustdoc does not generate documentation for extern blocks
[INFO] [stdout] 30 | |     }
[INFO] [stdout]    | |_____- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` (part of `#[warn(unused)]`) 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:29:16
[INFO] [stdout]    |
[INFO] [stdout] 29 |         unsafe 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[E0716]: temporary value dropped while borrowed
[INFO] [stdout]  --> examples/readme.rs:9:16
[INFO] [stdout]   |
[INFO] [stdout] 9 |     println_f!("Hello, {name}!");
[INFO] [stdout]   |     -----------^^^^^^^^^^^^^^^--
[INFO] [stdout]   |     |          |              |
[INFO] [stdout]   |     |          |              temporary value is freed at the end of this statement
[INFO] [stdout]   |     |          creates a temporary value which is freed while still in use
[INFO] [stdout]   |     borrow later used here
[INFO] [stdout]   |
[INFO] [stdout]   = note: consider using a `let` binding to create a longer lived value
[INFO] [stdout]   = note: this error originates in the macro `proc_macro_call` which comes from the expansion of the macro `println_f` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0716]: temporary value dropped while borrowed
[INFO] [stdout]   --> examples/readme.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |         f!("Hello, {name}!"), // shorthand for String creation (Python-like)
[INFO] [stdout]    |         ---^^^^^^^^^^^^^^^--
[INFO] [stdout]    |         |  |              |
[INFO] [stdout]    |         |  |              temporary value is freed at the end of this statement
[INFO] [stdout]    |         |  creates a temporary value which is freed while still in use
[INFO] [stdout]    |         borrow later used here
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using a `let` binding to create a longer lived value
[INFO] [stdout]    = note: this error originates in the macro `proc_macro_call` which comes from the expansion of the macro `f` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0716]: temporary value dropped while borrowed
[INFO] [stdout]   --> examples/readme.rs:20:16
[INFO] [stdout]    |
[INFO] [stdout] 20 |             f!("{hi}, {name}!", hi = "Hello"),
[INFO] [stdout]    |             ---^^^^^^^^^^^^^^----------------
[INFO] [stdout]    |             |  |             |
[INFO] [stdout]    |             |  |             temporary value is freed at the end of this statement
[INFO] [stdout]    |             |  creates a temporary value which is freed while still in use
[INFO] [stdout]    |             borrow later used here
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using a `let` binding to create a longer lived value
[INFO] [stdout]    = note: this error originates in the macro `proc_macro_call` which comes from the expansion of the macro `f` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0716]: temporary value dropped while borrowed
[INFO] [stdout]   --> examples/readme.rs:33:16
[INFO] [stdout]    |
[INFO] [stdout] 33 |             f!("Hello, {foo.name}!"),
[INFO] [stdout]    |             ---^^^^^^^^^^^^^^^^^^^--
[INFO] [stdout]    |             |  |                  |
[INFO] [stdout]    |             |  |                  temporary value is freed at the end of this statement
[INFO] [stdout]    |             |  creates a temporary value which is freed while still in use
[INFO] [stdout]    |             borrow later used here
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using a `let` binding to create a longer lived value
[INFO] [stdout]    = note: this error originates in the macro `proc_macro_call` which comes from the expansion of the macro `f` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0716]: temporary value dropped while borrowed
[INFO] [stdout]   --> examples/readme.rs:40:16
[INFO] [stdout]    |
[INFO] [stdout] 40 |             f!("Hello, {ft_and_name.1}!"),
[INFO] [stdout]    |             ---^^^^^^^^^^^^^^^^^^^^^^^^--
[INFO] [stdout]    |             |  |                       |
[INFO] [stdout]    |             |  |                       temporary value is freed at the end of this statement
[INFO] [stdout]    |             |  creates a temporary value which is freed while still in use
[INFO] [stdout]    |             borrow later used here
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using a `let` binding to create a longer lived value
[INFO] [stdout]    = note: this error originates in the macro `proc_macro_call` which comes from the expansion of the macro `f` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0716]: temporary value dropped while borrowed
[INFO] [stdout]   --> examples/readme.rs:48:16
[INFO] [stdout]    |
[INFO] [stdout] 48 |             f!("In this context {x=}"),
[INFO] [stdout]    |             ---^^^^^^^^^^^^^^^^^^^^^--
[INFO] [stdout]    |             |  |                    |
[INFO] [stdout]    |             |  |                    temporary value is freed at the end of this statement
[INFO] [stdout]    |             |  creates a temporary value which is freed while still in use
[INFO] [stdout]    |             borrow later used here
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using a `let` binding to create a longer lived value
[INFO] [stdout]    = note: this error originates in the macro `proc_macro_call` which comes from the expansion of the macro `f` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0716`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fstrings` (example "readme") due to 6 previous errors
[INFO] running `Command { std: "docker" "inspect" "c3f377f8f8fdf41832b62d3a38fdef36a7e58903d81f5e80c27c2a1686b268ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3f377f8f8fdf41832b62d3a38fdef36a7e58903d81f5e80c27c2a1686b268ca", kill_on_drop: false }`
[INFO] [stdout] c3f377f8f8fdf41832b62d3a38fdef36a7e58903d81f5e80c27c2a1686b268ca
