[INFO] fetching crate sylt-common 0.1.0...
[INFO] checking sylt-common-0.1.0 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate sylt-common 0.1.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate sylt-common 0.1.0
[INFO] finished tweaking crates.io crate sylt-common 0.1.0
[INFO] tweaked toml for crates.io crate sylt-common 0.1.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate sylt-common 0.1.0 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 17 packages to latest compatible versions
[INFO] [stderr]       Adding owo-colors v2.1.0 (available: v4.2.2)
[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 sylt-tokenizer v0.1.0
[INFO] [stderr]   Downloaded sungod v0.3.1
[INFO] [stderr]   Downloaded sylt-macro v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 08fbfd3d773323093f09c8f11edec442d1d569dc4646fb8b84475244851c7d54
[INFO] running `Command { std: "docker" "start" "-a" "08fbfd3d773323093f09c8f11edec442d1d569dc4646fb8b84475244851c7d54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "08fbfd3d773323093f09c8f11edec442d1d569dc4646fb8b84475244851c7d54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08fbfd3d773323093f09c8f11edec442d1d569dc4646fb8b84475244851c7d54", kill_on_drop: false }`
[INFO] [stdout] 08fbfd3d773323093f09c8f11edec442d1d569dc4646fb8b84475244851c7d54
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 659188ecf23a6555d025709215783c6c9d29d31b8ebe9450abc4528f1fd0d575
[INFO] running `Command { std: "docker" "start" "-a" "659188ecf23a6555d025709215783c6c9d29d31b8ebe9450abc4528f1fd0d575", kill_on_drop: false }`
[INFO] [stderr]    Compiling beef v0.5.2
[INFO] [stderr]    Compiling regex-syntax v0.6.29
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]     Checking owo-colors v2.1.0
[INFO] [stderr]     Checking sungod v0.3.1
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling logos-derive v0.12.1
[INFO] [stderr]    Compiling sylt-macro v0.1.0
[INFO] [stderr]     Checking logos v0.12.1
[INFO] [stderr]     Checking sylt-tokenizer v0.1.0
[INFO] [stderr]     Checking sylt-common v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/lib.rs:37:24
[INFO] [stdout]    |
[INFO] [stdout] 37 |     fn stack_from_base(&self, base: usize) -> Cow<[Value]>;
[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] 37 |     fn stack_from_base(&self, base: usize) -> Cow<'_, [Value]>;
[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:37:24
[INFO] [stdout]    |
[INFO] [stdout] 37 |     fn stack_from_base(&self, base: usize) -> Cow<[Value]>;
[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] 37 |     fn stack_from_base(&self, base: usize) -> Cow<'_, [Value]>;
[INFO] [stdout]    |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.72s
[INFO] running `Command { std: "docker" "inspect" "659188ecf23a6555d025709215783c6c9d29d31b8ebe9450abc4528f1fd0d575", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "659188ecf23a6555d025709215783c6c9d29d31b8ebe9450abc4528f1fd0d575", kill_on_drop: false }`
[INFO] [stdout] 659188ecf23a6555d025709215783c6c9d29d31b8ebe9450abc4528f1fd0d575