[INFO] fetching crate fehler-macros 1.0.0...
[INFO] testing fehler-macros-1.0.0 against 1.54.0 for beta-1.55-1
[INFO] extracting crate fehler-macros 1.0.0 into /workspace/builds/worker-55/source
[INFO] validating manifest of crates.io crate fehler-macros 1.0.0 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fehler-macros 1.0.0
[INFO] finished tweaking crates.io crate fehler-macros 1.0.0
[INFO] tweaked toml for crates.io crate fehler-macros 1.0.0 written to /workspace/builds/worker-55/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 74d00046c49b7365d8e6a44be1f636caca2825fe02018906ce9dff412b960321
[INFO] running `Command { std: "docker" "start" "-a" "74d00046c49b7365d8e6a44be1f636caca2825fe02018906ce9dff412b960321", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "74d00046c49b7365d8e6a44be1f636caca2825fe02018906ce9dff412b960321", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74d00046c49b7365d8e6a44be1f636caca2825fe02018906ce9dff412b960321", kill_on_drop: false }`
[INFO] [stdout] 74d00046c49b7365d8e6a44be1f636caca2825fe02018906ce9dff412b960321
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1ffc64930dd2a995fe2d55851d114ec24ad8afef58a315d73ded0d2da23a0849
[INFO] running `Command { std: "docker" "start" "-a" "1ffc64930dd2a995fe2d55851d114ec24ad8afef58a315d73ded0d2da23a0849", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling fehler-macros v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/args.rs:45:31
[INFO] [stdout]    |
[INFO] [stdout] 45 |                 _   => panic!(WRAPPER_MUST_BE_PATH)
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]    |
[INFO] [stdout] 45 |                 _   => panic!("{}", WRAPPER_MUST_BE_PATH)
[INFO] [stdout]    |                               ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 45 |                 _   => std::panic::panic_any(WRAPPER_MUST_BE_PATH)
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/args.rs:49:25
[INFO] [stdout]    |
[INFO] [stdout] 49 |         } else { panic!(WRAPPER_MUST_BE_PATH) }
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]    |
[INFO] [stdout] 49 |         } else { panic!("{}", WRAPPER_MUST_BE_PATH) }
[INFO] [stdout]    |                         ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 49 |         } else { std::panic::panic_any(WRAPPER_MUST_BE_PATH) }
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/args.rs:95:55
[INFO] [stdout]    |
[INFO] [stdout] 95 |         _                                   => panic!(WRAPPER_MUST_BE_PATH)
[INFO] [stdout]    |                                                       ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]    |
[INFO] [stdout] 95 |         _                                   => panic!("{}", WRAPPER_MUST_BE_PATH)
[INFO] [stdout]    |                                                       ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 95 |         _                                   => std::panic::panic_any(WRAPPER_MUST_BE_PATH)
[INFO] [stdout]    |                                                ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.26s
[INFO] running `Command { std: "docker" "inspect" "1ffc64930dd2a995fe2d55851d114ec24ad8afef58a315d73ded0d2da23a0849", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ffc64930dd2a995fe2d55851d114ec24ad8afef58a315d73ded0d2da23a0849", kill_on_drop: false }`
[INFO] [stdout] 1ffc64930dd2a995fe2d55851d114ec24ad8afef58a315d73ded0d2da23a0849
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f07d30667b1ecbed291e54badecf1364532cd039474c775874a7cefeb796723c
[INFO] running `Command { std: "docker" "start" "-a" "f07d30667b1ecbed291e54badecf1364532cd039474c775874a7cefeb796723c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling fehler-macros v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/args.rs:45:31
[INFO] [stdout]    |
[INFO] [stdout] 45 |                 _   => panic!(WRAPPER_MUST_BE_PATH)
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]    |
[INFO] [stdout] 45 |                 _   => panic!("{}", WRAPPER_MUST_BE_PATH)
[INFO] [stdout]    |                               ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 45 |                 _   => std::panic::panic_any(WRAPPER_MUST_BE_PATH)
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/args.rs:49:25
[INFO] [stdout]    |
[INFO] [stdout] 49 |         } else { panic!(WRAPPER_MUST_BE_PATH) }
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]    |
[INFO] [stdout] 49 |         } else { panic!("{}", WRAPPER_MUST_BE_PATH) }
[INFO] [stdout]    |                         ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 49 |         } else { std::panic::panic_any(WRAPPER_MUST_BE_PATH) }
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/args.rs:95:55
[INFO] [stdout]    |
[INFO] [stdout] 95 |         _                                   => panic!(WRAPPER_MUST_BE_PATH)
[INFO] [stdout]    |                                                       ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]    |
[INFO] [stdout] 95 |         _                                   => panic!("{}", WRAPPER_MUST_BE_PATH)
[INFO] [stdout]    |                                                       ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 95 |         _                                   => std::panic::panic_any(WRAPPER_MUST_BE_PATH)
[INFO] [stdout]    |                                                ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/args.rs:45:31
[INFO] [stdout]    |
[INFO] [stdout] 45 |                 _   => panic!(WRAPPER_MUST_BE_PATH)
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]    |
[INFO] [stdout] 45 |                 _   => panic!("{}", WRAPPER_MUST_BE_PATH)
[INFO] [stdout]    |                               ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 45 |                 _   => std::panic::panic_any(WRAPPER_MUST_BE_PATH)
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/args.rs:49:25
[INFO] [stdout]    |
[INFO] [stdout] 49 |         } else { panic!(WRAPPER_MUST_BE_PATH) }
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]    |
[INFO] [stdout] 49 |         } else { panic!("{}", WRAPPER_MUST_BE_PATH) }
[INFO] [stdout]    |                         ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 49 |         } else { std::panic::panic_any(WRAPPER_MUST_BE_PATH) }
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/args.rs:95:55
[INFO] [stdout]    |
[INFO] [stdout] 95 |         _                                   => panic!(WRAPPER_MUST_BE_PATH)
[INFO] [stdout]    |                                                       ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]    |
[INFO] [stdout] 95 |         _                                   => panic!("{}", WRAPPER_MUST_BE_PATH)
[INFO] [stdout]    |                                                       ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 95 |         _                                   => std::panic::panic_any(WRAPPER_MUST_BE_PATH)
[INFO] [stdout]    |                                                ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.58s
[INFO] running `Command { std: "docker" "inspect" "f07d30667b1ecbed291e54badecf1364532cd039474c775874a7cefeb796723c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f07d30667b1ecbed291e54badecf1364532cd039474c775874a7cefeb796723c", kill_on_drop: false }`
[INFO] [stdout] f07d30667b1ecbed291e54badecf1364532cd039474c775874a7cefeb796723c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-55/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 270a5a0aad9c251e93ddf67626e40ca599dc38059dd1774184d73c447c6193e6
[INFO] running `Command { std: "docker" "start" "-a" "270a5a0aad9c251e93ddf67626e40ca599dc38059dd1774184d73c447c6193e6", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]   --> src/args.rs:45:31
[INFO] [stderr]    |
[INFO] [stderr] 45 |                 _   => panic!(WRAPPER_MUST_BE_PATH)
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stderr]    = note: this is no longer accepted in Rust 2021
[INFO] [stderr] help: add a "{}" format string to Display the message
[INFO] [stderr]    |
[INFO] [stderr] 45 |                 _   => panic!("{}", WRAPPER_MUST_BE_PATH)
[INFO] [stderr]    |                               ^^^^^
[INFO] [stderr] help: or use std::panic::panic_any instead
[INFO] [stderr]    |
[INFO] [stderr] 45 |                 _   => std::panic::panic_any(WRAPPER_MUST_BE_PATH)
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]   --> src/args.rs:49:25
[INFO] [stderr]    |
[INFO] [stderr] 49 |         } else { panic!(WRAPPER_MUST_BE_PATH) }
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this is no longer accepted in Rust 2021
[INFO] [stderr] help: add a "{}" format string to Display the message
[INFO] [stderr]    |
[INFO] [stderr] 49 |         } else { panic!("{}", WRAPPER_MUST_BE_PATH) }
[INFO] [stderr]    |                         ^^^^^
[INFO] [stderr] help: or use std::panic::panic_any instead
[INFO] [stderr]    |
[INFO] [stderr] 49 |         } else { std::panic::panic_any(WRAPPER_MUST_BE_PATH) }
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]   --> src/args.rs:95:55
[INFO] [stderr]    |
[INFO] [stderr] 95 |         _                                   => panic!(WRAPPER_MUST_BE_PATH)
[INFO] [stderr]    |                                                       ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this is no longer accepted in Rust 2021
[INFO] [stderr] help: add a "{}" format string to Display the message
[INFO] [stderr]    |
[INFO] [stderr] 95 |         _                                   => panic!("{}", WRAPPER_MUST_BE_PATH)
[INFO] [stderr]    |                                                       ^^^^^
[INFO] [stderr] help: or use std::panic::panic_any instead
[INFO] [stderr]    |
[INFO] [stderr] 95 |         _                                   => std::panic::panic_any(WRAPPER_MUST_BE_PATH)
[INFO] [stderr]    |                                                ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]   --> src/args.rs:45:31
[INFO] [stderr]    |
[INFO] [stderr] 45 |                 _   => panic!(WRAPPER_MUST_BE_PATH)
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stderr]    = note: this is no longer accepted in Rust 2021
[INFO] [stderr] help: add a "{}" format string to Display the message
[INFO] [stderr]    |
[INFO] [stderr] 45 |                 _   => panic!("{}", WRAPPER_MUST_BE_PATH)
[INFO] [stderr]    |                               ^^^^^
[INFO] [stderr] help: or use std::panic::panic_any instead
[INFO] [stderr]    |
[INFO] [stderr] 45 |                 _   => std::panic::panic_any(WRAPPER_MUST_BE_PATH)
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]   --> src/args.rs:49:25
[INFO] [stderr]    |
[INFO] [stderr] 49 |         } else { panic!(WRAPPER_MUST_BE_PATH) }
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this is no longer accepted in Rust 2021
[INFO] [stderr] help: add a "{}" format string to Display the message
[INFO] [stderr]    |
[INFO] [stderr] 49 |         } else { panic!("{}", WRAPPER_MUST_BE_PATH) }
[INFO] [stderr]    |                         ^^^^^
[INFO] [stderr] help: or use std::panic::panic_any instead
[INFO] [stderr]    |
[INFO] [stderr] 49 |         } else { std::panic::panic_any(WRAPPER_MUST_BE_PATH) }
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]   --> src/args.rs:95:55
[INFO] [stderr]    |
[INFO] [stderr] 95 |         _                                   => panic!(WRAPPER_MUST_BE_PATH)
[INFO] [stderr]    |                                                       ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this is no longer accepted in Rust 2021
[INFO] [stderr] help: add a "{}" format string to Display the message
[INFO] [stderr]    |
[INFO] [stderr] 95 |         _                                   => panic!("{}", WRAPPER_MUST_BE_PATH)
[INFO] [stderr]    |                                                       ^^^^^
[INFO] [stderr] help: or use std::panic::panic_any instead
[INFO] [stderr]    |
[INFO] [stderr] 95 |         _                                   => std::panic::panic_any(WRAPPER_MUST_BE_PATH)
[INFO] [stderr]    |                                                ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.67s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/fehler_macros-6457dd814245a7fe)
[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 fehler-macros
[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] running `Command { std: "docker" "inspect" "270a5a0aad9c251e93ddf67626e40ca599dc38059dd1774184d73c447c6193e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "270a5a0aad9c251e93ddf67626e40ca599dc38059dd1774184d73c447c6193e6", kill_on_drop: false }`
[INFO] [stdout] 270a5a0aad9c251e93ddf67626e40ca599dc38059dd1774184d73c447c6193e6
