[INFO] fetching crate wide-str-impl 0.1.0...
[INFO] checking wide-str-impl-0.1.0 against master#b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18 for pr-79470
[INFO] extracting crate wide-str-impl 0.1.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate wide-str-impl 0.1.0 on toolchain b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2abcebca5fb27aa3667bf868bc92fa1811f1201e5f6cba329d47090ff7ea16eb
[INFO] running `Command { std: "docker" "start" "-a" "2abcebca5fb27aa3667bf868bc92fa1811f1201e5f6cba329d47090ff7ea16eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2abcebca5fb27aa3667bf868bc92fa1811f1201e5f6cba329d47090ff7ea16eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2abcebca5fb27aa3667bf868bc92fa1811f1201e5f6cba329d47090ff7ea16eb", kill_on_drop: false }`
[INFO] [stdout] 2abcebca5fb27aa3667bf868bc92fa1811f1201e5f6cba329d47090ff7ea16eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a89c8f673aecbaff6dd3ed07111c5c9a7973681a52f778ec1a181be97ac195a8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a89c8f673aecbaff6dd3ed07111c5c9a7973681a52f778ec1a181be97ac195a8", kill_on_drop: false }`
[INFO] [stderr]     Checking 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: `#[warn(panic_fmt)]` on by default
[INFO] [stdout]    = note: this message is not used as a format string, but will be in a future Rust edition
[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: `#[warn(panic_fmt)]` on by default
[INFO] [stdout]    = note: this message is not used as a format string, but will be in a future Rust edition
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `Command { std: "docker" "inspect" "a89c8f673aecbaff6dd3ed07111c5c9a7973681a52f778ec1a181be97ac195a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a89c8f673aecbaff6dd3ed07111c5c9a7973681a52f778ec1a181be97ac195a8", kill_on_drop: false }`
[INFO] [stdout] a89c8f673aecbaff6dd3ed07111c5c9a7973681a52f778ec1a181be97ac195a8