[INFO] fetching crate tfmt-macros 0.4.0...
[INFO] checking tfmt-macros-0.4.0 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate tfmt-macros 0.4.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate tfmt-macros 0.4.0
[INFO] finished tweaking crates.io crate tfmt-macros 0.4.0
[INFO] tweaked toml for crates.io crate tfmt-macros 0.4.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate tfmt-macros 0.4.0 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "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: v2.0.104)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c812e9d99211a59439ed89324ee063b1828a0931da0cef09a6b46bc6bbe65122
[INFO] running `Command { std: "docker" "start" "-a" "c812e9d99211a59439ed89324ee063b1828a0931da0cef09a6b46bc6bbe65122", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c812e9d99211a59439ed89324ee063b1828a0931da0cef09a6b46bc6bbe65122", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c812e9d99211a59439ed89324ee063b1828a0931da0cef09a6b46bc6bbe65122", kill_on_drop: false }`
[INFO] [stdout] c812e9d99211a59439ed89324ee063b1828a0931da0cef09a6b46bc6bbe65122
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0f46e8b3162c245c0ebc5adc685c3faf2c25152be51428b326970d73cf9dc0d6
[INFO] running `Command { std: "docker" "start" "-a" "0f46e8b3162c245c0ebc5adc685c3faf2c25152be51428b326970d73cf9dc0d6", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking tfmt-macros v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/parser.rs:59:26
[INFO] [stdout]    |
[INFO] [stdout] 59 | fn unescape(mut literal: &str, span: Span) -> syn::parse::Result<Cow<str>> {
[INFO] [stdout]    |                          ^^^^ this lifetime flows to the output  -------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 59 | fn unescape(mut literal: &str, span: Span) -> syn::parse::Result<Cow<'_, str>> {
[INFO] [stdout]    |                                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/parser.rs:95:27
[INFO] [stdout]    |
[INFO] [stdout] 95 | pub fn parse(mut literal: &str, span: Span) -> syn::parse::Result<Vec<Piece>> {
[INFO] [stdout]    |                           ^^^^ this lifetime flows to the output      ----- the lifetime gets resolved as `'_`
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 95 | pub fn parse(mut literal: &str, span: Span) -> syn::parse::Result<Vec<Piece<'_>>> {
[INFO] [stdout]    |                                                                            ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/parser.rs:155:24
[INFO] [stdout]     |
[INFO] [stdout] 155 | fn parse_colon(format: &str, span: Span) -> syn::parse::Result<(Piece, &str)> {
[INFO] [stdout]     |                        ^^^^                                     -----  ---- the lifetimes get resolved as `'_`
[INFO] [stdout]     |                        |                                        |
[INFO] [stdout]     |                        this lifetime flows to the output        the lifetimes get resolved as `'_`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 155 | fn parse_colon(format: &str, span: Span) -> syn::parse::Result<(Piece<'_>, &str)> {
[INFO] [stdout]     |                                                                      ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/parser.rs:59:26
[INFO] [stdout]    |
[INFO] [stdout] 59 | fn unescape(mut literal: &str, span: Span) -> syn::parse::Result<Cow<str>> {
[INFO] [stdout]    |                          ^^^^ this lifetime flows to the output  -------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 59 | fn unescape(mut literal: &str, span: Span) -> syn::parse::Result<Cow<'_, str>> {
[INFO] [stdout]    |                                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/parser.rs:95:27
[INFO] [stdout]    |
[INFO] [stdout] 95 | pub fn parse(mut literal: &str, span: Span) -> syn::parse::Result<Vec<Piece>> {
[INFO] [stdout]    |                           ^^^^ this lifetime flows to the output      ----- the lifetime gets resolved as `'_`
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 95 | pub fn parse(mut literal: &str, span: Span) -> syn::parse::Result<Vec<Piece<'_>>> {
[INFO] [stdout]    |                                                                            ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/parser.rs:155:24
[INFO] [stdout]     |
[INFO] [stdout] 155 | fn parse_colon(format: &str, span: Span) -> syn::parse::Result<(Piece, &str)> {
[INFO] [stdout]     |                        ^^^^                                     -----  ---- the lifetimes get resolved as `'_`
[INFO] [stdout]     |                        |                                        |
[INFO] [stdout]     |                        this lifetime flows to the output        the lifetimes get resolved as `'_`
[INFO] [stdout]     |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 155 | fn parse_colon(format: &str, span: Span) -> syn::parse::Result<(Piece<'_>, &str)> {
[INFO] [stdout]     |                                                                      ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.83s
[INFO] running `Command { std: "docker" "inspect" "0f46e8b3162c245c0ebc5adc685c3faf2c25152be51428b326970d73cf9dc0d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f46e8b3162c245c0ebc5adc685c3faf2c25152be51428b326970d73cf9dc0d6", kill_on_drop: false }`
[INFO] [stdout] 0f46e8b3162c245c0ebc5adc685c3faf2c25152be51428b326970d73cf9dc0d6