[INFO] crate shardio 0.5.4 is already in cache
[INFO] extracting crate shardio 0.5.4 into work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/reg/shardio/0.5.4
[INFO] extracting crate shardio 0.5.4 into work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/reg/shardio/0.5.4
[INFO] validating manifest of shardio-0.5.4 on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of shardio-0.5.4 on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing shardio-0.5.4
[INFO] finished frobbing shardio-0.5.4
[INFO] frobbed toml for shardio-0.5.4 written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/reg/shardio/0.5.4/Cargo.toml
[INFO] started frobbing shardio-0.5.4
[INFO] finished frobbing shardio-0.5.4
[INFO] frobbed toml for shardio-0.5.4 written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/reg/shardio/0.5.4/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking shardio-0.5.4 against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-1/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/reg/shardio/0.5.4:/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" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] dcc382779690be0be9b32068aefc639460ec2640ccce539c8880ba564bb1ea7d
[INFO] running `"docker" "start" "-a" "dcc382779690be0be9b32068aefc639460ec2640ccce539c8880ba564bb1ea7d"`
[INFO] [stderr]     Checking min-max-heap v1.2.2
[INFO] [stderr]     Checking is_sorted v0.1.1
[INFO] [stderr]    Compiling lz4-sys v1.8.3
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling lz4 v1.23.1
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]     Checking crossbeam-deque v0.6.3
[INFO] [stderr]     Checking rayon-core v1.5.0
[INFO] [stderr]     Checking rayon v1.1.0
[INFO] [stderr]     Checking criterion v0.2.11
[INFO] [stderr]     Checking shardio v0.5.4 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> benches/my_bench.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `check_round_trip`
[INFO] [stderr]    --> benches/my_bench.rs:62:5
[INFO] [stderr]     |
[INFO] [stderr] 62  | /     fn check_round_trip(
[INFO] [stderr] 63  | |         disk_chunk_size: usize,
[INFO] [stderr] 64  | |         producer_chunk_size: usize,
[INFO] [stderr] 65  | |         buffer_size: usize,
[INFO] [stderr] ...   |
[INFO] [stderr] 111 | |         Ok(())
[INFO] [stderr] 112 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_shard_round_trip_big`
[INFO] [stderr]    --> benches/my_bench.rs:114:5
[INFO] [stderr]     |
[INFO] [stderr] 114 |     fn test_shard_round_trip_big() {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `benchmark_roundtrip`
[INFO] [stderr]    --> benches/my_bench.rs:118:5
[INFO] [stderr]     |
[INFO] [stderr] 118 |     fn benchmark_roundtrip(c: &mut Criterion) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> benches/my_bench.rs:91:21
[INFO] [stderr]    |
[INFO] [stderr] 91 |                     sender.send(tt);
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> benches/my_bench.rs:103:9
[INFO] [stderr]     |
[INFO] [stderr] 103 |         reader.read_range(&Range::all(), &mut all_items);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> benches/my_bench.rs:115:9
[INFO] [stderr]     |
[INFO] [stderr] 115 |         check_round_trip(256, 32, 1 << 12, 1 << 14);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `v` should have an upper case name
[INFO] [stderr]    --> benches/my_bench.rs:167:12
[INFO] [stderr]     |
[INFO] [stderr] 167 |     static v: [usize; 4] = [256 * KB, 512 * KB, 1024 * KB, 2048 * KB];
[INFO] [stderr]     |            ^ help: convert the identifier to upper case: `V`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.95s
[INFO] running `"docker" "inspect" "dcc382779690be0be9b32068aefc639460ec2640ccce539c8880ba564bb1ea7d"`
[INFO] running `"docker" "rm" "-f" "dcc382779690be0be9b32068aefc639460ec2640ccce539c8880ba564bb1ea7d"`
[INFO] [stdout] dcc382779690be0be9b32068aefc639460ec2640ccce539c8880ba564bb1ea7d