[INFO] fetching crate adarank 0.1.0...
[INFO] checking adarank-0.1.0 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate adarank 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate adarank 0.1.0
[INFO] finished tweaking crates.io crate adarank 0.1.0
[INFO] tweaked toml for crates.io crate adarank 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate adarank 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 75 packages to latest compatible versions
[INFO] [stderr]       Adding colored v2.2.0 (available: v3.0.0)
[INFO] [stderr]       Adding encode_unicode v0.3.6 (available: v1.0.0)
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.1)
[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] 0a4e8af0808445e58de8440d039e0ba1cd1e10c63daee713d57f60a97d31198e
[INFO] running `Command { std: "docker" "start" "-a" "0a4e8af0808445e58de8440d039e0ba1cd1e10c63daee713d57f60a97d31198e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0a4e8af0808445e58de8440d039e0ba1cd1e10c63daee713d57f60a97d31198e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a4e8af0808445e58de8440d039e0ba1cd1e10c63daee713d57f60a97d31198e", kill_on_drop: false }`
[INFO] [stdout] 0a4e8af0808445e58de8440d039e0ba1cd1e10c63daee713d57f60a97d31198e
[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] 95c685c6bb4416f00f32b12f719e49e4a46f58f01a7aa3f6b4d958b54481b42f
[INFO] running `Command { std: "docker" "start" "-a" "95c685c6bb4416f00f32b12f719e49e4a46f58f01a7aa3f6b4d958b54481b42f", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking tracing-core v0.1.34
[INFO] [stderr]     Checking lazy_static v1.5.0
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]     Checking getrandom v0.2.16
[INFO] [stderr]     Checking iana-time-zone v0.1.63
[INFO] [stderr]     Checking log v0.4.27
[INFO] [stderr]     Checking colored v2.2.0
[INFO] [stderr]     Checking sharded-slab v0.1.7
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking thread_local v1.1.9
[INFO] [stderr]     Checking encode_unicode v0.3.6
[INFO] [stderr]     Checking smallvec v1.15.1
[INFO] [stderr]     Checking tracing-log v0.2.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking tracing-subscriber v0.3.19
[INFO] [stderr]     Checking chrono v0.4.41
[INFO] [stderr]     Checking approx v0.5.1
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling tracing-attributes v0.1.30
[INFO] [stderr]     Checking tracing v0.1.41
[INFO] [stderr]     Checking serde_json v1.0.140
[INFO] [stderr]     Checking adarank v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/ranklist.rs:60:16
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub fn get(&self, index: usize) -> Result<Ref<DataPoint>, LtrError> {
[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] 60 |     pub fn get(&self, index: usize) -> Result<Ref<'_, DataPoint>, LtrError> {
[INFO] [stdout]    |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/ranklist.rs:60:16
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub fn get(&self, index: usize) -> Result<Ref<DataPoint>, LtrError> {
[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] 60 |     pub fn get(&self, index: usize) -> Result<Ref<'_, DataPoint>, LtrError> {
[INFO] [stdout]    |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.99s
[INFO] running `Command { std: "docker" "inspect" "95c685c6bb4416f00f32b12f719e49e4a46f58f01a7aa3f6b4d958b54481b42f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95c685c6bb4416f00f32b12f719e49e4a46f58f01a7aa3f6b4d958b54481b42f", kill_on_drop: false }`
[INFO] [stdout] 95c685c6bb4416f00f32b12f719e49e4a46f58f01a7aa3f6b4d958b54481b42f