[INFO] fetching crate format_tools 0.2.0...
[INFO] testing format_tools-0.2.0 against nightly-2024-10-28 for randomize-layout
[INFO] extracting crate format_tools 0.2.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate format_tools 0.2.0 on toolchain nightly-2024-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate format_tools 0.2.0
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate format_tools 0.2.0
[INFO] tweaked toml for crates.io crate format_tools 0.2.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate format_tools 0.2.0 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" "+nightly-2024-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 227b97c1adc19597ff5139d2bdcd8284b54145f1478fda58c784a0ee614865d9
[INFO] running `Command { std: "docker" "start" "-a" "227b97c1adc19597ff5139d2bdcd8284b54145f1478fda58c784a0ee614865d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "227b97c1adc19597ff5139d2bdcd8284b54145f1478fda58c784a0ee614865d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "227b97c1adc19597ff5139d2bdcd8284b54145f1478fda58c784a0ee614865d9", kill_on_drop: false }`
[INFO] [stdout] 227b97c1adc19597ff5139d2bdcd8284b54145f1478fda58c784a0ee614865d9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e3aa58368b313ad80f19c8ef9a182ba9297b31f4abc645452188f16f2110410c
[INFO] running `Command { std: "docker" "start" "-a" "e3aa58368b313ad80f19c8ef9a182ba9297b31f4abc645452188f16f2110410c", kill_on_drop: false }`
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[INFO] [stderr]    Compiling format_tools v0.2.0 (/opt/rustwide/workdir)
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[INFO] [stdout] warning: method `inner` is never used
[INFO] [stdout]   --> src/format/to_string/aref.rs:34:10
[INFO] [stdout]    |
[INFO] [stdout] 29 | impl< 'a, T, How > Ref< 'a, T, How >
[INFO] [stdout]    | ------------------------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 34 |   pub fn inner( self ) -> &'a T
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.14s
[INFO] running `Command { std: "docker" "inspect" "e3aa58368b313ad80f19c8ef9a182ba9297b31f4abc645452188f16f2110410c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3aa58368b313ad80f19c8ef9a182ba9297b31f4abc645452188f16f2110410c", kill_on_drop: false }`
[INFO] [stdout] e3aa58368b313ad80f19c8ef9a182ba9297b31f4abc645452188f16f2110410c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8e8393dde53b5ef800ba2bb2123501a1cb106bef024c71520a60dc1e4b0e477d
[INFO] running `Command { std: "docker" "start" "-a" "8e8393dde53b5ef800ba2bb2123501a1cb106bef024c71520a60dc1e4b0e477d", kill_on_drop: false }`
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[INFO] [stderr]    Compiling error_tools v0.13.0
[INFO] [stderr]    Compiling iter_tools v0.13.0
[INFO] [stderr]    Compiling iter_tools v0.20.0
[INFO] [stderr]    Compiling iter_tools v0.16.0
[INFO] [stderr]    Compiling macro_tools v0.38.0
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[INFO] [stderr]    Compiling former_meta v0.12.0
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[INFO] [stderr]    Compiling variadic_from v0.14.0
[INFO] [stderr]    Compiling mod_interface_meta v0.16.0
[INFO] [stderr]    Compiling derive_tools_meta v0.25.0
[INFO] [stderr]    Compiling former_meta v2.7.0
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[INFO] [stderr]    Compiling mod_interface_meta v0.18.0
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[INFO] [stderr]    Compiling derive_tools v0.26.0
[INFO] [stderr]    Compiling reflect_tools v0.3.0
[INFO] [stderr]    Compiling mod_interface v0.16.0
[INFO] [stderr]    Compiling proper_path_tools v0.3.0
[INFO] [stderr]    Compiling mod_interface v0.18.0
[INFO] [stderr]    Compiling meta_tools v0.10.0
[INFO] [stderr]    Compiling process_tools v0.2.0
[INFO] [stderr]    Compiling former v2.7.0
[INFO] [stderr]    Compiling format_tools v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `inner` is never used
[INFO] [stdout]   --> src/format/to_string/aref.rs:34:10
[INFO] [stdout]    |
[INFO] [stdout] 29 | impl< 'a, T, How > Ref< 'a, T, How >
[INFO] [stdout]    | ------------------------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 34 |   pub fn inner( self ) -> &'a T
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling basic-toml v0.1.9
[INFO] [stdout] warning: missing documentation for the crate
[INFO] [stdout]   --> tests/smoke_test.rs:3:1
[INFO] [stdout]    |
[INFO] [stdout] 3  | / #[ test ]
[INFO] [stdout] 4  | | fn local_smoke_test()
[INFO] [stdout] 5  | | {
[INFO] [stdout] 6  | |   ::test_tools::smoke_test_for_local_run();
[INFO] [stdout] ...  |
[INFO] [stdout] 13 | |   ::test_tools::smoke_test_for_published_run();
[INFO] [stdout] 14 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-W missing-docs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `inner` is never used
[INFO] [stdout]   --> src/format/to_string/aref.rs:34:10
[INFO] [stdout]    |
[INFO] [stdout] 29 | impl< 'a, T, How > Ref< 'a, T, How >
[INFO] [stdout]    | ------------------------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 34 |   pub fn inner( self ) -> &'a T
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `fmt`
[INFO] [stdout]   --> tests/inc/./to_string_with_fallback_test.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 |   impl fmt::Display for OnlyDisplay
[INFO] [stdout]    |        ^^^ use of undeclared crate or module `fmt`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this module
[INFO] [stdout]    |
[INFO] [stdout] 1  + use std::fmt;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `fmt`
[INFO] [stdout]   --> tests/inc/./to_string_with_fallback_test.rs:69:29
[INFO] [stdout]    |
[INFO] [stdout] 69 |     fn fmt( &self, f : &mut fmt::Formatter<'_> ) -> fmt::Result
[INFO] [stdout]    |                             ^^^ use of undeclared crate or module `fmt`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this module
[INFO] [stdout]    |
[INFO] [stdout] 1  + use std::fmt;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `fmt`
[INFO] [stdout]   --> tests/inc/./to_string_with_fallback_test.rs:69:53
[INFO] [stdout]    |
[INFO] [stdout] 69 |     fn fmt( &self, f : &mut fmt::Formatter<'_> ) -> fmt::Result
[INFO] [stdout]    |                                                     ^^^ use of undeclared crate or module `fmt`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this module
[INFO] [stdout]    |
[INFO] [stdout] 1  + use std::fmt;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `fmt`
[INFO] [stdout]   --> tests/inc/./to_string_with_fallback_test.rs:84:8
[INFO] [stdout]    |
[INFO] [stdout] 84 |   impl fmt::Debug for OnlyDebug
[INFO] [stdout]    |        ^^^ use of undeclared crate or module `fmt`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this module
[INFO] [stdout]    |
[INFO] [stdout] 1  + use std::fmt;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `fmt`
[INFO] [stdout]   --> tests/inc/./to_string_with_fallback_test.rs:86:29
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn fmt( &self, f : &mut fmt::Formatter<'_> ) -> fmt::Result
[INFO] [stdout]    |                             ^^^ use of undeclared crate or module `fmt`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this module
[INFO] [stdout]    |
[INFO] [stdout] 1  + use std::fmt;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `fmt`
[INFO] [stdout]   --> tests/inc/./to_string_with_fallback_test.rs:86:53
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn fmt( &self, f : &mut fmt::Formatter<'_> ) -> fmt::Result
[INFO] [stdout]    |                                                     ^^^ use of undeclared crate or module `fmt`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this module
[INFO] [stdout]    |
[INFO] [stdout] 1  + use std::fmt;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `fmt`
[INFO] [stdout]    --> tests/inc/./to_string_with_fallback_test.rs:109:8
[INFO] [stdout]     |
[INFO] [stdout] 109 |   impl fmt::Debug for Both
[INFO] [stdout]     |        ^^^ use of undeclared crate or module `fmt`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this module
[INFO] [stdout]     |
[INFO] [stdout] 1   + use std::fmt;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `fmt`
[INFO] [stdout]    --> tests/inc/./to_string_with_fallback_test.rs:111:29
[INFO] [stdout]     |
[INFO] [stdout] 111 |     fn fmt( &self, f : &mut fmt::Formatter<'_> ) -> fmt::Result
[INFO] [stdout]     |                             ^^^ use of undeclared crate or module `fmt`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this module
[INFO] [stdout]     |
[INFO] [stdout] 1   + use std::fmt;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `fmt`
[INFO] [stdout]    --> tests/inc/./to_string_with_fallback_test.rs:111:53
[INFO] [stdout]     |
[INFO] [stdout] 111 |     fn fmt( &self, f : &mut fmt::Formatter<'_> ) -> fmt::Result
[INFO] [stdout]     |                                                     ^^^ use of undeclared crate or module `fmt`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this module
[INFO] [stdout]     |
[INFO] [stdout] 1   + use std::fmt;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `fmt`
[INFO] [stdout]    --> tests/inc/./to_string_with_fallback_test.rs:117:8
[INFO] [stdout]     |
[INFO] [stdout] 117 |   impl fmt::Display for Both
[INFO] [stdout]     |        ^^^ use of undeclared crate or module `fmt`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this module
[INFO] [stdout]     |
[INFO] [stdout] 1   + use std::fmt;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `fmt`
[INFO] [stdout]    --> tests/inc/./to_string_with_fallback_test.rs:119:29
[INFO] [stdout]     |
[INFO] [stdout] 119 |     fn fmt( &self, f : &mut fmt::Formatter<'_> ) -> fmt::Result
[INFO] [stdout]     |                             ^^^ use of undeclared crate or module `fmt`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this module
[INFO] [stdout]     |
[INFO] [stdout] 1   + use std::fmt;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `fmt`
[INFO] [stdout]    --> tests/inc/./to_string_with_fallback_test.rs:119:53
[INFO] [stdout]     |
[INFO] [stdout] 119 |     fn fmt( &self, f : &mut fmt::Formatter<'_> ) -> fmt::Result
[INFO] [stdout]     |                                                     ^^^ use of undeclared crate or module `fmt`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this module
[INFO] [stdout]     |
[INFO] [stdout] 1   + use std::fmt;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `fmt`
[INFO] [stdout]    --> tests/inc/./to_string_with_fallback_test.rs:149:8
[INFO] [stdout]     |
[INFO] [stdout] 149 |   impl fmt::Debug for OnlyDebug
[INFO] [stdout]     |        ^^^ use of undeclared crate or module `fmt`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this module
[INFO] [stdout]     |
[INFO] [stdout] 1   + use std::fmt;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `fmt`
[INFO] [stdout]    --> tests/inc/./to_string_with_fallback_test.rs:151:29
[INFO] [stdout]     |
[INFO] [stdout] 151 |     fn fmt( &self, f : &mut fmt::Formatter<'_> ) -> fmt::Result
[INFO] [stdout]     |                             ^^^ use of undeclared crate or module `fmt`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this module
[INFO] [stdout]     |
[INFO] [stdout] 1   + use std::fmt;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `fmt`
[INFO] [stdout]    --> tests/inc/./to_string_with_fallback_test.rs:151:53
[INFO] [stdout]     |
[INFO] [stdout] 151 |     fn fmt( &self, f : &mut fmt::Formatter<'_> ) -> fmt::Result
[INFO] [stdout]     |                                                     ^^^ use of undeclared crate or module `fmt`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this module
[INFO] [stdout]     |
[INFO] [stdout] 1   + use std::fmt;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `fmt`
[INFO] [stdout]    --> tests/inc/./to_string_with_fallback_test.rs:171:8
[INFO] [stdout]     |
[INFO] [stdout] 171 |   impl fmt::Debug for Both
[INFO] [stdout]     |        ^^^ use of undeclared crate or module `fmt`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this module
[INFO] [stdout]     |
[INFO] [stdout] 1   + use std::fmt;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `fmt`
[INFO] [stdout]    --> tests/inc/./to_string_with_fallback_test.rs:173:29
[INFO] [stdout]     |
[INFO] [stdout] 173 |     fn fmt( &self, f : &mut fmt::Formatter<'_> ) -> fmt::Result
[INFO] [stdout]     |                             ^^^ use of undeclared crate or module `fmt`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this module
[INFO] [stdout]     |
[INFO] [stdout] 1   + use std::fmt;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `fmt`
[INFO] [stdout]    --> tests/inc/./to_string_with_fallback_test.rs:173:53
[INFO] [stdout]     |
[INFO] [stdout] 173 |     fn fmt( &self, f : &mut fmt::Formatter<'_> ) -> fmt::Result
[INFO] [stdout]     |                                                     ^^^ use of undeclared crate or module `fmt`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this module
[INFO] [stdout]     |
[INFO] [stdout] 1   + use std::fmt;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `fmt`
[INFO] [stdout]    --> tests/inc/./to_string_with_fallback_test.rs:179:8
[INFO] [stdout]     |
[INFO] [stdout] 179 |   impl fmt::Display for Both
[INFO] [stdout]     |        ^^^ use of undeclared crate or module `fmt`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this module
[INFO] [stdout]     |
[INFO] [stdout] 1   + use std::fmt;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `fmt`
[INFO] [stdout]    --> tests/inc/./to_string_with_fallback_test.rs:181:29
[INFO] [stdout]     |
[INFO] [stdout] 181 |     fn fmt( &self, f : &mut fmt::Formatter<'_> ) -> fmt::Result
[INFO] [stdout]     |                             ^^^ use of undeclared crate or module `fmt`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this module
[INFO] [stdout]     |
[INFO] [stdout] 1   + use std::fmt;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `fmt`
[INFO] [stdout]    --> tests/inc/./to_string_with_fallback_test.rs:181:53
[INFO] [stdout]     |
[INFO] [stdout] 181 |     fn fmt( &self, f : &mut fmt::Formatter<'_> ) -> fmt::Result
[INFO] [stdout]     |                                                     ^^^ use of undeclared crate or module `fmt`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this module
[INFO] [stdout]     |
[INFO] [stdout] 1   + use std::fmt;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `format_tools` (test "tests") due to 21 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "8e8393dde53b5ef800ba2bb2123501a1cb106bef024c71520a60dc1e4b0e477d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e8393dde53b5ef800ba2bb2123501a1cb106bef024c71520a60dc1e4b0e477d", kill_on_drop: false }`
[INFO] [stdout] 8e8393dde53b5ef800ba2bb2123501a1cb106bef024c71520a60dc1e4b0e477d
