[INFO] fetching crate ufmt-macros 0.3.0...
[INFO] building ufmt-macros-0.3.0 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate ufmt-macros 0.3.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate ufmt-macros 0.3.0
[INFO] finished tweaking crates.io crate ufmt-macros 0.3.0
[INFO] tweaked toml for crates.io crate ufmt-macros 0.3.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ufmt-macros 0.3.0 on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 4 packages to latest compatible versions
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.106)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 069958205b9e3adcf57d6227d5edbaad6398df8b88073d8a2ea95c50169c155d
[INFO] running `Command { std: "docker" "start" "-a" "069958205b9e3adcf57d6227d5edbaad6398df8b88073d8a2ea95c50169c155d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "069958205b9e3adcf57d6227d5edbaad6398df8b88073d8a2ea95c50169c155d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "069958205b9e3adcf57d6227d5edbaad6398df8b88073d8a2ea95c50169c155d", kill_on_drop: false }`
[INFO] [stdout] 069958205b9e3adcf57d6227d5edbaad6398df8b88073d8a2ea95c50169c155d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7c00c85e04acb9d001ec12dfb80635c163bdfde4602d917c7b7da16937a44710
[INFO] running `Command { std: "docker" "start" "-a" "7c00c85e04acb9d001ec12dfb80635c163bdfde4602d917c7b7da16937a44710", kill_on_drop: false }`
[INFO] [stderr]    Compiling ufmt-macros v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:343:26
[INFO] [stdout]     |
[INFO] [stdout] 343 | fn unescape(mut literal: &str, span: Span) -> parse::Result<Cow<str>> {
[INFO] [stdout]     |                          ^^^^ the lifetime is elided here   ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:3:9
[INFO] [stdout]     |
[INFO] [stdout]   3 | #![deny(warnings)]
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     = note: `#[deny(mismatched_lifetime_syntaxes)]` implied by `#[deny(warnings)]`
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 343 | fn unescape(mut literal: &str, span: Span) -> parse::Result<Cow<'_, str>> {
[INFO] [stdout]     |                                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:377:23
[INFO] [stdout]     |
[INFO] [stdout] 377 | fn parse(mut literal: &str, span: Span) -> parse::Result<Vec<Piece>> {
[INFO] [stdout]     |                       ^^^^ the lifetime is elided here       ^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 377 | fn parse(mut literal: &str, span: Span) -> parse::Result<Vec<Piece<'_>>> {
[INFO] [stdout]     |                                                                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:479:24
[INFO] [stdout]     |
[INFO] [stdout] 479 | fn parse_colon(format: &str, span: Span) -> parse::Result<(Piece, &str)> {
[INFO] [stdout]     |                        ^^^^                                ^^^^^  ^^^^ the same lifetime is elided here
[INFO] [stdout]     |                        |                                   |
[INFO] [stdout]     |                        the lifetime is elided here         the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 479 | fn parse_colon(format: &str, span: Span) -> parse::Result<(Piece<'_>, &str)> {
[INFO] [stdout]     |                                                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ufmt-macros` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "7c00c85e04acb9d001ec12dfb80635c163bdfde4602d917c7b7da16937a44710", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c00c85e04acb9d001ec12dfb80635c163bdfde4602d917c7b7da16937a44710", kill_on_drop: false }`
[INFO] [stdout] 7c00c85e04acb9d001ec12dfb80635c163bdfde4602d917c7b7da16937a44710