[INFO] crate criterion 0.2.11 is already in cache
[INFO] extracting crate criterion 0.2.11 into work/ex/pr-60261/sources/master#1891bfa80364eead426517c68de6947b7692e2de/reg/criterion/0.2.11
[INFO] extracting crate criterion 0.2.11 into work/ex/pr-60261/sources/try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a/reg/criterion/0.2.11
[INFO] validating manifest of criterion-0.2.11 on toolchain master#1891bfa80364eead426517c68de6947b7692e2de
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1891bfa80364eead426517c68de6947b7692e2de-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of criterion-0.2.11 on toolchain try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bfdcf6db3afcce5fe4013023cfa8ba359c5d527a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing criterion-0.2.11
[INFO] finished frobbing criterion-0.2.11
[INFO] frobbed toml for criterion-0.2.11 written to work/ex/pr-60261/sources/master#1891bfa80364eead426517c68de6947b7692e2de/reg/criterion/0.2.11/Cargo.toml
[INFO] started frobbing criterion-0.2.11
[INFO] finished frobbing criterion-0.2.11
[INFO] frobbed toml for criterion-0.2.11 written to work/ex/pr-60261/sources/try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a/reg/criterion/0.2.11/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1891bfa80364eead426517c68de6947b7692e2de-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bfdcf6db3afcce5fe4013023cfa8ba359c5d527a-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1891bfa80364eead426517c68de6947b7692e2de-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bfdcf6db3afcce5fe4013023cfa8ba359c5d527a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking criterion-0.2.11 against try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a for pr-60261
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60261/worker-7/try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60261/sources/try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a/reg/criterion/0.2.11:/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" "+bfdcf6db3afcce5fe4013023cfa8ba359c5d527a-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 26f806c8466270168d050462a765651b13dbb46690be5d531e801e374088d3ea
[INFO] running `"docker" "start" "-a" "26f806c8466270168d050462a765651b13dbb46690be5d531e801e374088d3ea"`
[INFO] [stderr]     Checking criterion v0.2.11 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `self`
[INFO] [stderr]  --> src/stats/test.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | use rand::{self, FromEntropy, Rng};
[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/lib.rs:464:21
[INFO] [stderr]     |
[INFO] [stderr] 464 |                 let mut input = black_box(setup());
[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/lib.rs:464:21
[INFO] [stderr]     |
[INFO] [stderr] 464 |                 let mut input = black_box(setup());
[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: the item `ParameterizedBenchmark` is imported redundantly
[INFO] [stderr]   --> benches/benchmarks/compare_functions.rs:51:9
[INFO] [stderr]    |
[INFO] [stderr] 3  | use criterion::ParameterizedBenchmark;
[INFO] [stderr]    |     --------------------------------- the item `ParameterizedBenchmark` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 51 |     use criterion::ParameterizedBenchmark;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'criterion::Benchmark::with_program': External program benchmarks were rarely used and are awkward to maintain, so they are scheduled for deletion in 0.3.0
[INFO] [stderr]    --> tests/criterion_tests.rs:332:31
[INFO] [stderr]     |
[INFO] [stderr] 332 |         benchmark = benchmark.with_program("external", create_command(10));
[INFO] [stderr]     |                               ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'criterion::ParameterizedBenchmark::<T>::with_program': External program benchmarks were rarely used and are awkward to maintain, so they are scheduled for deletion in 0.3.0
[INFO] [stderr]    --> tests/criterion_tests.rs:349:31
[INFO] [stderr]     |
[INFO] [stderr] 349 |         benchmark = benchmark.with_program("external", |i| create_command(*i));
[INFO] [stderr]     |                               ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.21s
[INFO] running `"docker" "inspect" "26f806c8466270168d050462a765651b13dbb46690be5d531e801e374088d3ea"`
[INFO] running `"docker" "rm" "-f" "26f806c8466270168d050462a765651b13dbb46690be5d531e801e374088d3ea"`
[INFO] [stdout] 26f806c8466270168d050462a765651b13dbb46690be5d531e801e374088d3ea