[INFO] fetching crate snoot 0.1.2...
[INFO] checking snoot-0.1.2 against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] extracting crate snoot 0.1.2 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate snoot 0.1.2 on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate snoot 0.1.2
[INFO] finished tweaking crates.io crate snoot 0.1.2
[INFO] tweaked toml for crates.io crate snoot 0.1.2 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0cb0462b47baf2c923d07c9f4273e9ee669bd140aaadcd54f43cb0525d37a476
[INFO] running `"docker" "start" "-a" "0cb0462b47baf2c923d07c9f4273e9ee669bd140aaadcd54f43cb0525d37a476"`
[INFO] [stderr]     Checking snoot v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr] warning: the item `Ord` is imported redundantly
[INFO] [stderr]   --> src/diagnostic/diagnostic_bag.rs:37:13
[INFO] [stderr]    |
[INFO] [stderr] 37 |         use std::cmp::Ord;
[INFO] [stderr]    |             ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Ord` is imported redundantly
[INFO] [stderr]   --> src/diagnostic/diagnostic_bag.rs:37:13
[INFO] [stderr]    |
[INFO] [stderr] 37 |         use std::cmp::Ord;
[INFO] [stderr]    |             ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/serde_serialization/mod.rs:300:29
[INFO] [stderr]     |
[INFO] [stderr] 300 |     fn deserialize_tuple<V>(mut self, len: usize, visitor: V) -> Result<V::Value, Self::Error>
[INFO] [stderr]     |                             ----^^^^
[INFO] [stderr]     |                             |
[INFO] [stderr]     |                             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/serde_serialization/mod.rs:310:36
[INFO] [stderr]     |
[INFO] [stderr] 310 |     fn deserialize_tuple_struct<V>(mut self,
[INFO] [stderr]     |                                    ----^^^^
[INFO] [stderr]     |                                    |
[INFO] [stderr]     |                                    help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/serde_serialization/mod.rs:357:30
[INFO] [stderr]     |
[INFO] [stderr] 357 |     fn deserialize_struct<V>(mut self,
[INFO] [stderr]     |                              ----^^^^
[INFO] [stderr]     |                              |
[INFO] [stderr]     |                              help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/serde_serialization/mod.rs:300:29
[INFO] [stderr]     |
[INFO] [stderr] 300 |     fn deserialize_tuple<V>(mut self, len: usize, visitor: V) -> Result<V::Value, Self::Error>
[INFO] [stderr]     |                             ----^^^^
[INFO] [stderr]     |                             |
[INFO] [stderr]     |                             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/serde_serialization/mod.rs:310:36
[INFO] [stderr]     |
[INFO] [stderr] 310 |     fn deserialize_tuple_struct<V>(mut self,
[INFO] [stderr]     |                                    ----^^^^
[INFO] [stderr]     |                                    |
[INFO] [stderr]     |                                    help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/serde_serialization/mod.rs:357:30
[INFO] [stderr]     |
[INFO] [stderr] 357 |     fn deserialize_struct<V>(mut self,
[INFO] [stderr]     |                              ----^^^^
[INFO] [stderr]     |                              |
[INFO] [stderr]     |                              help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.88s
[INFO] running `"docker" "inspect" "0cb0462b47baf2c923d07c9f4273e9ee669bd140aaadcd54f43cb0525d37a476"`
[INFO] running `"docker" "rm" "-f" "0cb0462b47baf2c923d07c9f4273e9ee669bd140aaadcd54f43cb0525d37a476"`
[INFO] [stdout] 0cb0462b47baf2c923d07c9f4273e9ee669bd140aaadcd54f43cb0525d37a476