[INFO] updating cached repository anderejd/rollcache
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/anderejd/rollcache
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/anderejd/rollcache" "work/ex/pr-57617/sources/master#e2f221c75932de7a29845c8d6f1f73536ad00c41/gh/anderejd/rollcache"`
[INFO] [stderr] Cloning into 'work/ex/pr-57617/sources/master#e2f221c75932de7a29845c8d6f1f73536ad00c41/gh/anderejd/rollcache'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/anderejd/rollcache" "work/ex/pr-57617/sources/try#0bfb90d213a93e466b33d078a5b535a2a6f9c5ff/gh/anderejd/rollcache"`
[INFO] [stderr] Cloning into 'work/ex/pr-57617/sources/try#0bfb90d213a93e466b33d078a5b535a2a6f9c5ff/gh/anderejd/rollcache'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1707f8fdd8addcc313c9fcf8b9b71959a6ea57ed
[INFO] sha for GitHub repo anderejd/rollcache: 1707f8fdd8addcc313c9fcf8b9b71959a6ea57ed
[INFO] validating manifest of anderejd/rollcache on toolchain master#e2f221c75932de7a29845c8d6f1f73536ad00c41
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e2f221c75932de7a29845c8d6f1f73536ad00c41-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of anderejd/rollcache on toolchain try#0bfb90d213a93e466b33d078a5b535a2a6f9c5ff
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0bfb90d213a93e466b33d078a5b535a2a6f9c5ff-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing anderejd/rollcache
[INFO] finished frobbing anderejd/rollcache
[INFO] frobbed toml for anderejd/rollcache written to work/ex/pr-57617/sources/master#e2f221c75932de7a29845c8d6f1f73536ad00c41/gh/anderejd/rollcache/Cargo.toml
[INFO] started frobbing anderejd/rollcache
[INFO] finished frobbing anderejd/rollcache
[INFO] frobbed toml for anderejd/rollcache written to work/ex/pr-57617/sources/try#0bfb90d213a93e466b33d078a5b535a2a6f9c5ff/gh/anderejd/rollcache/Cargo.toml
[INFO] crate anderejd/rollcache has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e2f221c75932de7a29845c8d6f1f73536ad00c41-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0bfb90d213a93e466b33d078a5b535a2a6f9c5ff-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking anderejd/rollcache against master#e2f221c75932de7a29845c8d6f1f73536ad00c41 for pr-57617
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57617/worker-1/master#e2f221c75932de7a29845c8d6f1f73536ad00c41:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57617/sources/master#e2f221c75932de7a29845c8d6f1f73536ad00c41/gh/anderejd/rollcache:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+e2f221c75932de7a29845c8d6f1f73536ad00c41-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] a7723f192e0a2c3d87e58eea157856255ae9c8abdd098e2206d876a2bd0e327d
[INFO] running `"docker" "start" "-a" "a7723f192e0a2c3d87e58eea157856255ae9c8abdd098e2206d876a2bd0e327d"`
[INFO] [stderr]     Checking rollcache v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::time::Instant`
[INFO] [stderr]  --> src/version_2/mod.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::time::Instant;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::time::Instant`
[INFO] [stderr]  --> src/version_2/mod.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::time::Instant;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `InsertionWithRelocation`
[INFO] [stderr]   --> src/version_2/ringlist.rs:34:1
[INFO] [stderr]    |
[INFO] [stderr] 34 | pub struct InsertionWithRelocation {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get`
[INFO] [stderr]    --> src/version_2/ringlist.rs:222:5
[INFO] [stderr]     |
[INFO] [stderr] 222 |     pub fn get(&self, i: Id) -> Option<&T> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `InsertionWithRelocation`
[INFO] [stderr]   --> src/version_2/ringlist.rs:34:1
[INFO] [stderr]    |
[INFO] [stderr] 34 | pub struct InsertionWithRelocation {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get`
[INFO] [stderr]    --> src/version_2/ringlist.rs:222:5
[INFO] [stderr]     |
[INFO] [stderr] 222 |     pub fn get(&self, i: Id) -> Option<&T> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.00s
[INFO] running `"docker" "inspect" "a7723f192e0a2c3d87e58eea157856255ae9c8abdd098e2206d876a2bd0e327d"`
[INFO] running `"docker" "rm" "-f" "a7723f192e0a2c3d87e58eea157856255ae9c8abdd098e2206d876a2bd0e327d"`
[INFO] [stdout] a7723f192e0a2c3d87e58eea157856255ae9c8abdd098e2206d876a2bd0e327d