[INFO] fetching crate wide-str-impl 0.1.0...
[INFO] testing wide-str-impl-0.1.0 against master#caccb4d0368bd918ef6668af8e13834d07040417 for pr-146098-1
[INFO] extracting crate wide-str-impl 0.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate wide-str-impl 0.1.0
[INFO] finished tweaking crates.io crate wide-str-impl 0.1.0
[INFO] tweaked toml for crates.io crate wide-str-impl 0.1.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate wide-str-impl 0.1.0 on toolchain caccb4d0368bd918ef6668af8e13834d07040417
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 1 package to latest compatible version
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 43316a6dfc2acc97c5bb3a6f52b0157a09db4e08f882913d8b87b2eac08fb19c
[INFO] running `Command { std: "docker" "start" "-a" "43316a6dfc2acc97c5bb3a6f52b0157a09db4e08f882913d8b87b2eac08fb19c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "43316a6dfc2acc97c5bb3a6f52b0157a09db4e08f882913d8b87b2eac08fb19c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43316a6dfc2acc97c5bb3a6f52b0157a09db4e08f882913d8b87b2eac08fb19c", kill_on_drop: false }`
[INFO] [stdout] 43316a6dfc2acc97c5bb3a6f52b0157a09db4e08f882913d8b87b2eac08fb19c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3a6151c68068120a4c04c47c06559bf276de41710e1f01c5732897bd0149f088
[INFO] running `Command { std: "docker" "start" "-a" "3a6151c68068120a4c04c47c06559bf276de41710e1f01c5732897bd0149f088", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro-hack v0.5.20+deprecated
[INFO] [stderr]    Compiling wide-str-impl v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message contains a brace
[INFO] [stdout]   --> src/lib.rs:38:60
[INFO] [stdout]    |
[INFO] [stdout] 38 | ...                   panic!("Syntax Error: Missing `{` to begin the unicode escape");
[INFO] [stdout]    |                                                      ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]    |
[INFO] [stdout] 38 |                             panic!("{}", "Syntax Error: Missing `{` to begin the unicode escape");
[INFO] [stdout]    |                                    +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.59s
[INFO] running `Command { std: "docker" "inspect" "3a6151c68068120a4c04c47c06559bf276de41710e1f01c5732897bd0149f088", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a6151c68068120a4c04c47c06559bf276de41710e1f01c5732897bd0149f088", kill_on_drop: false }`
[INFO] [stdout] 3a6151c68068120a4c04c47c06559bf276de41710e1f01c5732897bd0149f088
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4295499c05459bc1f95e4586f1ca29f2750fa32524abf1a9a57631884d95b685
[INFO] running `Command { std: "docker" "start" "-a" "4295499c05459bc1f95e4586f1ca29f2750fa32524abf1a9a57631884d95b685", kill_on_drop: false }`
[INFO] [stderr]    Compiling wide-str-impl v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message contains a brace
[INFO] [stdout]   --> src/lib.rs:38:60
[INFO] [stdout]    |
[INFO] [stdout] 38 | ...                   panic!("Syntax Error: Missing `{` to begin the unicode escape");
[INFO] [stdout]    |                                                      ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]    |
[INFO] [stdout] 38 |                             panic!("{}", "Syntax Error: Missing `{` to begin the unicode escape");
[INFO] [stdout]    |                                    +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains a brace
[INFO] [stdout]   --> src/lib.rs:38:60
[INFO] [stdout]    |
[INFO] [stdout] 38 | ...                   panic!("Syntax Error: Missing `{` to begin the unicode escape");
[INFO] [stdout]    |                                                      ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]    |
[INFO] [stdout] 38 |                             panic!("{}", "Syntax Error: Missing `{` to begin the unicode escape");
[INFO] [stdout]    |                                    +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `Command { std: "docker" "inspect" "4295499c05459bc1f95e4586f1ca29f2750fa32524abf1a9a57631884d95b685", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4295499c05459bc1f95e4586f1ca29f2750fa32524abf1a9a57631884d95b685", kill_on_drop: false }`
[INFO] [stdout] 4295499c05459bc1f95e4586f1ca29f2750fa32524abf1a9a57631884d95b685
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b6b7859716d01055f733548b3f00b0e15d09e1d39a1384043c9cf531d8555020
[INFO] running `Command { std: "docker" "start" "-a" "b6b7859716d01055f733548b3f00b0e15d09e1d39a1384043c9cf531d8555020", kill_on_drop: false }`
[INFO] [stderr] warning: panic message contains a brace
[INFO] [stderr]   --> src/lib.rs:38:60
[INFO] [stderr]    |
[INFO] [stderr] 38 | ...                   panic!("Syntax Error: Missing `{` to begin the unicode escape");
[INFO] [stderr]    |                                                      ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stderr]    = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stderr] help: add a "{}" format string to use the message literally
[INFO] [stderr]    |
[INFO] [stderr] 38 |                             panic!("{}", "Syntax Error: Missing `{` to begin the unicode escape");
[INFO] [stderr]    |                                    +++++
[INFO] [stderr] 
[INFO] [stderr] warning: `wide-str-impl` (lib) generated 1 warning (run `cargo fix --lib -p wide-str-impl` to apply 1 suggestion)
[INFO] [stderr] warning: `wide-str-impl` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/wide_str_impl-eb8bc5129f010916)
[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 wide_str_impl
[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" "b6b7859716d01055f733548b3f00b0e15d09e1d39a1384043c9cf531d8555020", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6b7859716d01055f733548b3f00b0e15d09e1d39a1384043c9cf531d8555020", kill_on_drop: false }`
[INFO] [stdout] b6b7859716d01055f733548b3f00b0e15d09e1d39a1384043c9cf531d8555020