[INFO] fetching crate cvmath 0.0.2...
[INFO] checking cvmath-0.0.2 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate cvmath 0.0.2 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate cvmath 0.0.2
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate cvmath 0.0.2
[INFO] tweaked toml for crates.io crate cvmath 0.0.2 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate cvmath 0.0.2 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate cvmath 0.0.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c917d67f658d0d7b9a77d195db80957cecef354760c2509d988a21e7fb926470
[INFO] running `Command { std: "docker" "start" "-a" "c917d67f658d0d7b9a77d195db80957cecef354760c2509d988a21e7fb926470", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c917d67f658d0d7b9a77d195db80957cecef354760c2509d988a21e7fb926470", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c917d67f658d0d7b9a77d195db80957cecef354760c2509d988a21e7fb926470", kill_on_drop: false }`
[INFO] [stdout] c917d67f658d0d7b9a77d195db80957cecef354760c2509d988a21e7fb926470
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1ef0e60f188c3f2671d5fe862ccaa5bac33a664d2afb3fc0f5398e6f5ae31a44
[INFO] running `Command { std: "docker" "start" "-a" "1ef0e60f188c3f2671d5fe862ccaa5bac33a664d2afb3fc0f5398e6f5ae31a44", kill_on_drop: false }`
[INFO] [stderr]     Checking cvmath v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> examples/svg/mod.rs:17:16
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn circle(&mut self, center: Point2<f32>, radius: f32) -> Attributes<&'static 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] 17 |     pub fn circle(&mut self, center: Point2<f32>, radius: f32) -> Attributes<'_, &'static str> {
[INFO] [stdout]    |                                                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> examples/svg/mod.rs:21:14
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn line(&mut self, start: Point2<f32>, end: Point2<f32>) -> Attributes<&'static str> {
[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] 21 |     pub fn line(&mut self, start: Point2<f32>, end: Point2<f32>) -> Attributes<'_, &'static str> {
[INFO] [stdout]    |                                                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> examples/svg/mod.rs:25:15
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn arrow(&mut self, start: Point2<f32>, end: Point2<f32>, arrowsize: f32) -> Attributes<&'static str> {
[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] 25 |     pub fn arrow(&mut self, start: Point2<f32>, end: Point2<f32>, arrowsize: f32) -> Attributes<'_, &'static str> {
[INFO] [stdout]    |                                                                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> examples/svg/mod.rs:33:13
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn arc(&mut self, start: Point2<f32>, end: Point2<f32>, radius: f32) -> Attributes<&'static str> {
[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] 33 |     pub fn arc(&mut self, start: Point2<f32>, end: Point2<f32>, radius: f32) -> Attributes<'_, &'static str> {
[INFO] [stdout]    |                                                                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> examples/svg/mod.rs:38:14
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn text(&mut self, p: Point2<f32>, text: &str) -> Attributes<String> {
[INFO] [stdout]    |                 ^^^^^^^^^                                 ------------------ the lifetime gets resolved as `'_`
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 this lifetime flows to the output
[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] 38 |     pub fn text(&mut self, p: Point2<f32>, text: &str) -> Attributes<'_, String> {
[INFO] [stdout]    |                                                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.82s
[INFO] running `Command { std: "docker" "inspect" "1ef0e60f188c3f2671d5fe862ccaa5bac33a664d2afb3fc0f5398e6f5ae31a44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ef0e60f188c3f2671d5fe862ccaa5bac33a664d2afb3fc0f5398e6f5ae31a44", kill_on_drop: false }`
[INFO] [stdout] 1ef0e60f188c3f2671d5fe862ccaa5bac33a664d2afb3fc0f5398e6f5ae31a44