[INFO] fetching crate flatten_objects 0.2.3...
[INFO] checking flatten_objects-0.2.3 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate flatten_objects 0.2.3 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate flatten_objects 0.2.3
[INFO] finished tweaking crates.io crate flatten_objects 0.2.3
[INFO] tweaked toml for crates.io crate flatten_objects 0.2.3 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate flatten_objects 0.2.3 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] crate crates.io crate flatten_objects 0.2.3 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" "+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] 987e4a63197c7772968d6f8b4e8f6e17c7e1111b13cf2251a78b3b2caee50117
[INFO] running `Command { std: "docker" "start" "-a" "987e4a63197c7772968d6f8b4e8f6e17c7e1111b13cf2251a78b3b2caee50117", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "987e4a63197c7772968d6f8b4e8f6e17c7e1111b13cf2251a78b3b2caee50117", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "987e4a63197c7772968d6f8b4e8f6e17c7e1111b13cf2251a78b3b2caee50117", kill_on_drop: false }`
[INFO] [stdout] 987e4a63197c7772968d6f8b4e8f6e17c7e1111b13cf2251a78b3b2caee50117
[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] b5a4d1ddf1215af49f4486f06959cb60205ed940689877b8c4da7f56b8057ae2
[INFO] running `Command { std: "docker" "start" "-a" "b5a4d1ddf1215af49f4486f06959cb60205ed940689877b8c4da7f56b8057ae2", kill_on_drop: false }`
[INFO] [stderr]     Checking bitmaps v3.2.1
[INFO] [stderr]     Checking flatten_objects v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/lib.rs:344:16
[INFO] [stdout]     |
[INFO] [stdout] 344 |     pub fn ids(&self) -> Iter<CAP> {
[INFO] [stdout]     |                ^^^^^     --------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                |
[INFO] [stdout]     |                this lifetime flows to the output
[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] 344 |     pub fn ids(&self) -> Iter<'_, CAP> {
[INFO] [stdout]     |                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/lib.rs:344:16
[INFO] [stdout]     |
[INFO] [stdout] 344 |     pub fn ids(&self) -> Iter<CAP> {
[INFO] [stdout]     |                ^^^^^     --------- the lifetime gets resolved as `'_`
[INFO] [stdout]     |                |
[INFO] [stdout]     |                this lifetime flows to the output
[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] 344 |     pub fn ids(&self) -> Iter<'_, CAP> {
[INFO] [stdout]     |                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.95s
[INFO] running `Command { std: "docker" "inspect" "b5a4d1ddf1215af49f4486f06959cb60205ed940689877b8c4da7f56b8057ae2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5a4d1ddf1215af49f4486f06959cb60205ed940689877b8c4da7f56b8057ae2", kill_on_drop: false }`
[INFO] [stdout] b5a4d1ddf1215af49f4486f06959cb60205ed940689877b8c4da7f56b8057ae2