[INFO] fetching crate parol 2.2.1...
[INFO] checking parol-2.2.1 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate parol 2.2.1 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate parol 2.2.1
[INFO] finished tweaking crates.io crate parol 2.2.1
[INFO] tweaked toml for crates.io crate parol 2.2.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate parol 2.2.1 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 parol 2.2.1 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded parol_runtime v2.2.2
[INFO] [stderr]   Downloaded petgraph v0.6.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 23217ffd219122f8127dbcb0dbff293aacd0e27afe487fc606897076f041ed89
[INFO] running `Command { std: "docker" "start" "-a" "23217ffd219122f8127dbcb0dbff293aacd0e27afe487fc606897076f041ed89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "23217ffd219122f8127dbcb0dbff293aacd0e27afe487fc606897076f041ed89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23217ffd219122f8127dbcb0dbff293aacd0e27afe487fc606897076f041ed89", kill_on_drop: false }`
[INFO] [stdout] 23217ffd219122f8127dbcb0dbff293aacd0e27afe487fc606897076f041ed89
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] cd64897a6fc7b150d988962c890b15b4eeb02f6438635d7fa4fcaadf75c9d20d
[INFO] running `Command { std: "docker" "start" "-a" "cd64897a6fc7b150d988962c890b15b4eeb02f6438635d7fa4fcaadf75c9d20d", kill_on_drop: false }`
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[INFO] [stderr]    Compiling serde_derive v1.0.217
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[INFO] [stderr]    Compiling darling_macro v0.20.10
[INFO] [stderr]     Checking ts-rs v10.1.0
[INFO] [stderr]    Compiling darling v0.20.10
[INFO] [stderr]    Compiling derive_builder_core v0.20.2
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[INFO] [stderr]     Checking parol v2.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/generators/symbol_table.rs:747:34
[INFO] [stdout]     |
[INFO] [stdout] 747 |     pub(crate) fn symbol_as_type(&self, symbol_id: SymbolId) -> impl TypeFacade {
[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] 747 |     pub(crate) fn symbol_as_type(&self, symbol_id: SymbolId) -> impl TypeFacade<'_> {
[INFO] [stdout]     |                                                                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/generators/symbol_table.rs:747:34
[INFO] [stdout]     |
[INFO] [stdout] 747 |     pub(crate) fn symbol_as_type(&self, symbol_id: SymbolId) -> impl TypeFacade {
[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] 747 |     pub(crate) fn symbol_as_type(&self, symbol_id: SymbolId) -> impl TypeFacade<'_> {
[INFO] [stdout]     |                                                                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 39.70s
[INFO] running `Command { std: "docker" "inspect" "cd64897a6fc7b150d988962c890b15b4eeb02f6438635d7fa4fcaadf75c9d20d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd64897a6fc7b150d988962c890b15b4eeb02f6438635d7fa4fcaadf75c9d20d", kill_on_drop: false }`
[INFO] [stdout] cd64897a6fc7b150d988962c890b15b4eeb02f6438635d7fa4fcaadf75c9d20d