[INFO] fetching crate fusioncache-rs 0.1.4...
[INFO] checking fusioncache-rs-0.1.4 against master#61cc47e367d7be91e13bcd01e4e96e0e233d4f6d for pr-133502-18
[INFO] extracting crate fusioncache-rs 0.1.4 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate fusioncache-rs 0.1.4
[INFO] finished tweaking crates.io crate fusioncache-rs 0.1.4
[INFO] tweaked toml for crates.io crate fusioncache-rs 0.1.4 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate fusioncache-rs 0.1.4 on toolchain 61cc47e367d7be91e13bcd01e4e96e0e233d4f6d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+61cc47e367d7be91e13bcd01e4e96e0e233d4f6d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate fusioncache-rs 0.1.4 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" "+61cc47e367d7be91e13bcd01e4e96e0e233d4f6d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
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[INFO] [stdout] 5e7f8f8438d60bc6c66e9b031f9ab666f5170118e5e029109f27cb7146d2f285
[INFO] running `Command { std: "docker" "start" "-a" "5e7f8f8438d60bc6c66e9b031f9ab666f5170118e5e029109f27cb7146d2f285", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5e7f8f8438d60bc6c66e9b031f9ab666f5170118e5e029109f27cb7146d2f285", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e7f8f8438d60bc6c66e9b031f9ab666f5170118e5e029109f27cb7146d2f285", kill_on_drop: false }`
[INFO] [stdout] 5e7f8f8438d60bc6c66e9b031f9ab666f5170118e5e029109f27cb7146d2f285
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+61cc47e367d7be91e13bcd01e4e96e0e233d4f6d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6f0a248000fc2ee2121fb1d23953671919a0bbc7769241015569513c75046b8f
[INFO] running `Command { std: "docker" "start" "-a" "6f0a248000fc2ee2121fb1d23953671919a0bbc7769241015569513c75046b8f", kill_on_drop: false }`
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[INFO] [stderr]     Checking fusioncache-rs v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `info`
[INFO] [stdout]   --> src/distributed_cache.rs:16:29
[INFO] [stdout]    |
[INFO] [stdout] 16 | use tracing::{debug, error, info};
[INFO] [stdout]    |                             ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::fmt`
[INFO] [stdout]     --> src/lib.rs:1162:9
[INFO] [stdout]      |
[INFO] [stdout] 1162 |     use core::fmt;
[INFO] [stdout]      |         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `info`
[INFO] [stdout]   --> src/distributed_cache.rs:16:29
[INFO] [stdout]    |
[INFO] [stdout] 16 | use tracing::{debug, error, info};
[INFO] [stdout]    |                             ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]    --> src/distributed_cache.rs:364:9
[INFO] [stdout]     |
[INFO] [stdout] 364 |     use std::time::Duration;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]    --> src/distributed_cache.rs:366:9
[INFO] [stdout]     |
[INFO] [stdout] 366 |     use super::*;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/failsafe.rs:107:25
[INFO] [stdout]     |
[INFO] [stdout] 107 |                     let mut errors = self.errors.lock().await;
[INFO] [stdout]     |                         ----^^^^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/failsafe.rs:107:25
[INFO] [stdout]     |
[INFO] [stdout] 107 |                     let mut errors = self.errors.lock().await;
[INFO] [stdout]     |                         ----^^^^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `error_message`
[INFO] [stdout]    --> src/lib.rs:990:51
[INFO] [stdout]     |
[INFO] [stdout] 990 |                     FailSafeResult::TooManyCycles(error_message) => {
[INFO] [stdout]     |                                                   ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_error_message`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `break_connection` and `restore_connection` are never used
[INFO] [stdout]    --> src/distributed_cache.rs:354:19
[INFO] [stdout]     |
[INFO] [stdout] 162 | / impl<
[INFO] [stdout] 163 | |     TKey: Eq + Send + Sync + Clone + Serialize + DeserializeOwned + Debug + 'static,
[INFO] [stdout] 164 | |     TValue: Clone + Send + Sync + Serialize + DeserializeOwned + Debug + 'static,
[INFO] [stdout] 165 | | > DistributedCache<TKey, TValue>
[INFO] [stdout]     | |________________________________- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 354 |       pub(crate) fn break_connection(&mut self) {
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 358 |       pub(crate) fn restore_connection(&mut self) {
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `error_message`
[INFO] [stdout]    --> src/lib.rs:990:51
[INFO] [stdout]     |
[INFO] [stdout] 990 |                     FailSafeResult::TooManyCycles(error_message) => {
[INFO] [stdout]     |                                                   ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_error_message`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TraceIdWrapper` is never constructed
[INFO] [stdout]     --> src/lib.rs:1782:12
[INFO] [stdout]      |
[INFO] [stdout] 1782 |     struct TraceIdWrapper<F> {
[INFO] [stdout]      |            ^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 01s
[INFO] running `Command { std: "docker" "inspect" "6f0a248000fc2ee2121fb1d23953671919a0bbc7769241015569513c75046b8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f0a248000fc2ee2121fb1d23953671919a0bbc7769241015569513c75046b8f", kill_on_drop: false }`
[INFO] [stdout] 6f0a248000fc2ee2121fb1d23953671919a0bbc7769241015569513c75046b8f
