[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-57745/sources/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039/gh/anderejd/rollcache"`
[INFO] [stderr] Cloning into 'work/ex/pr-57745/sources/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039/gh/anderejd/rollcache'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/anderejd/rollcache" "work/ex/pr-57745/sources/try#29640c57b5f92febba0e40c50cb863c9a7ede51d/gh/anderejd/rollcache"`
[INFO] [stderr] Cloning into 'work/ex/pr-57745/sources/try#29640c57b5f92febba0e40c50cb863c9a7ede51d/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#f613dc138b4012cf3d2eb40718fbcc7cf0a34039
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f613dc138b4012cf3d2eb40718fbcc7cf0a34039-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of anderejd/rollcache on toolchain try#29640c57b5f92febba0e40c50cb863c9a7ede51d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+29640c57b5f92febba0e40c50cb863c9a7ede51d-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-57745/sources/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039/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-57745/sources/try#29640c57b5f92febba0e40c50cb863c9a7ede51d/gh/anderejd/rollcache/Cargo.toml
[INFO] crate anderejd/rollcache has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f613dc138b4012cf3d2eb40718fbcc7cf0a34039-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+29640c57b5f92febba0e40c50cb863c9a7ede51d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking anderejd/rollcache against try#29640c57b5f92febba0e40c50cb863c9a7ede51d for pr-57745
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57745/worker-4/try#29640c57b5f92febba0e40c50cb863c9a7ede51d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57745/sources/try#29640c57b5f92febba0e40c50cb863c9a7ede51d/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" "+29640c57b5f92febba0e40c50cb863c9a7ede51d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 4ab7e8c1e82da1bf5f5f8a1813a14ca5ef65c9b173905a888be898585a990a14
[INFO] running `"docker" "start" "-a" "4ab7e8c1e82da1bf5f5f8a1813a14ca5ef65c9b173905a888be898585a990a14"`
[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 1.02s
[INFO] running `"docker" "inspect" "4ab7e8c1e82da1bf5f5f8a1813a14ca5ef65c9b173905a888be898585a990a14"`
[INFO] running `"docker" "rm" "-f" "4ab7e8c1e82da1bf5f5f8a1813a14ca5ef65c9b173905a888be898585a990a14"`
[INFO] [stdout] 4ab7e8c1e82da1bf5f5f8a1813a14ca5ef65c9b173905a888be898585a990a14