[INFO] fetching crate bench_timer 0.1.1...
[INFO] testing bench_timer-0.1.1 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate bench_timer 0.1.1 into /workspace/builds/worker-29/source
[INFO] validating manifest of crates.io crate bench_timer 0.1.1 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bench_timer 0.1.1
[INFO] finished tweaking crates.io crate bench_timer 0.1.1
[INFO] tweaked toml for crates.io crate bench_timer 0.1.1 written to /workspace/builds/worker-29/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 92791915029bdee12ddceaafda17d1bf5f95af94f2b394c3234cf92632d23e16
[INFO] running `Command { std: "docker" "start" "-a" "92791915029bdee12ddceaafda17d1bf5f95af94f2b394c3234cf92632d23e16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "92791915029bdee12ddceaafda17d1bf5f95af94f2b394c3234cf92632d23e16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92791915029bdee12ddceaafda17d1bf5f95af94f2b394c3234cf92632d23e16", kill_on_drop: false }`
[INFO] [stdout] 92791915029bdee12ddceaafda17d1bf5f95af94f2b394c3234cf92632d23e16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d938a2856e506e7530f9e49bbb1f5247074f474b2a3ad712c8691a7308cb6c62
[INFO] running `Command { std: "docker" "start" "-a" "d938a2856e506e7530f9e49bbb1f5247074f474b2a3ad712c8691a7308cb6c62", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling lazy_static v0.2.11
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling stderr v0.8.0
[INFO] [stderr]    Compiling bench_timer v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.36s
[INFO] running `Command { std: "docker" "inspect" "d938a2856e506e7530f9e49bbb1f5247074f474b2a3ad712c8691a7308cb6c62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d938a2856e506e7530f9e49bbb1f5247074f474b2a3ad712c8691a7308cb6c62", kill_on_drop: false }`
[INFO] [stdout] d938a2856e506e7530f9e49bbb1f5247074f474b2a3ad712c8691a7308cb6c62
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 27b66e8ac547357041e2d8b6d789c14562208c03511027f8f7adef50b349f369
[INFO] running `Command { std: "docker" "start" "-a" "27b66e8ac547357041e2d8b6d789c14562208c03511027f8f7adef50b349f369", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling bench_timer v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> tests/test_s.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 |     dbln!("{}", s);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `db` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> examples/s.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     dbln!("{}", s);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `db` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> examples/s.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 |     dbln!("{}", s);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `db` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> examples/s.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     dbln!("{}", s);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `db` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> examples/s.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     dbln!("{}", s);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `db` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> examples/s.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 51 |     dbln!("{}", s);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `db` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> tests/test_s.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 |     dbln!("{}", s);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `db` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> tests/test_s.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 51 |     dbln!("{}", s);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `db` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> tests/test_s.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 56 |     dbln!("{}", s);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `db` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> tests/test_s.rs:62:5
[INFO] [stdout]    |
[INFO] [stdout] 62 |     dbln!("{}", s);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `db` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> tests/test_s.rs:68:5
[INFO] [stdout]    |
[INFO] [stdout] 68 |     dbln!("{}", s);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `db` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> tests/test_s.rs:74:5
[INFO] [stdout]    |
[INFO] [stdout] 74 |     dbln!("{}", s);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `db` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> tests/test_s.rs:81:5
[INFO] [stdout]    |
[INFO] [stdout] 81 |     dbln!("{}", s);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `db` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> tests/test_s.rs:86:5
[INFO] [stdout]    |
[INFO] [stdout] 86 |     dbln!("{}", s);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `db` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> tests/test_s.rs:92:5
[INFO] [stdout]    |
[INFO] [stdout] 92 |     dbln!("{}", s);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `db` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> examples/s.rs:57:5
[INFO] [stdout]    |
[INFO] [stdout] 57 |     dbln!("{}", s);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `db` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> examples/s.rs:63:5
[INFO] [stdout]    |
[INFO] [stdout] 63 |     dbln!("{}", s);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `db` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> examples/s.rs:70:5
[INFO] [stdout]    |
[INFO] [stdout] 70 |     dbln!("{}", s);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `db` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> examples/s.rs:75:5
[INFO] [stdout]    |
[INFO] [stdout] 75 |     dbln!("{}", s);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `db` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> examples/s.rs:81:5
[INFO] [stdout]    |
[INFO] [stdout] 81 |     dbln!("{}", s);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `db` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 5.14s
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "27b66e8ac547357041e2d8b6d789c14562208c03511027f8f7adef50b349f369", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27b66e8ac547357041e2d8b6d789c14562208c03511027f8f7adef50b349f369", kill_on_drop: false }`
[INFO] [stdout] 27b66e8ac547357041e2d8b6d789c14562208c03511027f8f7adef50b349f369
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6c1a3339761a1611064e2faf3959893476e46b644219262a70a9c7ba78508383
[INFO] running `Command { std: "docker" "start" "-a" "6c1a3339761a1611064e2faf3959893476e46b644219262a70a9c7ba78508383", kill_on_drop: false }`
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]   --> examples/s.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     dbln!("{}", s);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this warning originates in the macro `db` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]   --> examples/s.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     dbln!("{}", s);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `db` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]   --> examples/s.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     dbln!("{}", s);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `db` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]   --> examples/s.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 |     dbln!("{}", s);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `db` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]   --> examples/s.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |     dbln!("{}", s);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `db` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]   --> examples/s.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 |     dbln!("{}", s);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `db` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]   --> examples/s.rs:63:5
[INFO] [stderr]    |
[INFO] [stderr] 63 |     dbln!("{}", s);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `db` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]   --> examples/s.rs:70:5
[INFO] [stderr]    |
[INFO] [stderr] 70 |     dbln!("{}", s);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `db` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]   --> examples/s.rs:75:5
[INFO] [stderr]    |
[INFO] [stderr] 75 |     dbln!("{}", s);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `db` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]   --> examples/s.rs:81:5
[INFO] [stderr]    |
[INFO] [stderr] 81 |     dbln!("{}", s);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `db` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]   --> tests/test_s.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 |     dbln!("{}", s);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this warning originates in the macro `db` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]   --> tests/test_s.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     dbln!("{}", s);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `db` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]   --> tests/test_s.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |     dbln!("{}", s);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `db` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]   --> tests/test_s.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 |     dbln!("{}", s);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `db` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]   --> tests/test_s.rs:62:5
[INFO] [stderr]    |
[INFO] [stderr] 62 |     dbln!("{}", s);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `db` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]   --> tests/test_s.rs:68:5
[INFO] [stderr]    |
[INFO] [stderr] 68 |     dbln!("{}", s);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `db` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]   --> tests/test_s.rs:74:5
[INFO] [stderr]    |
[INFO] [stderr] 74 |     dbln!("{}", s);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `db` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]   --> tests/test_s.rs:81:5
[INFO] [stderr]    |
[INFO] [stderr] 81 |     dbln!("{}", s);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `db` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]   --> tests/test_s.rs:86:5
[INFO] [stderr]    |
[INFO] [stderr] 86 |     dbln!("{}", s);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `db` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]   --> tests/test_s.rs:92:5
[INFO] [stderr]    |
[INFO] [stderr] 92 |     dbln!("{}", s);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `db` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: `bench_timer` (example "s") generated 10 warnings
[INFO] [stderr] warning: `bench_timer` (test "test_s") generated 10 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/bench_timer-96bb120441cde14d)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/test_s.rs (/opt/rustwide/target/debug/deps/test_s-c6eb75f9152ab4ac)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test main ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 5.93s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests bench_timer
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 23) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 4.52s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6c1a3339761a1611064e2faf3959893476e46b644219262a70a9c7ba78508383", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c1a3339761a1611064e2faf3959893476e46b644219262a70a9c7ba78508383", kill_on_drop: false }`
[INFO] [stdout] 6c1a3339761a1611064e2faf3959893476e46b644219262a70a9c7ba78508383