[INFO] updating cached repository souvik1997/fsbench
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/souvik1997/fsbench
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/souvik1997/fsbench" "work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/souvik1997/fsbench"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/souvik1997/fsbench'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/souvik1997/fsbench" "work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/souvik1997/fsbench"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/souvik1997/fsbench'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 77cc337e9e88a07ae9381abb4710f4c1b4ae2423
[INFO] sha for GitHub repo souvik1997/fsbench: 77cc337e9e88a07ae9381abb4710f4c1b4ae2423
[INFO] validating manifest of souvik1997/fsbench on toolchain master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of souvik1997/fsbench on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing souvik1997/fsbench
[INFO] finished frobbing souvik1997/fsbench
[INFO] frobbed toml for souvik1997/fsbench written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/souvik1997/fsbench/Cargo.toml
[INFO] started frobbing souvik1997/fsbench
[INFO] finished frobbing souvik1997/fsbench
[INFO] frobbed toml for souvik1997/fsbench written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/souvik1997/fsbench/Cargo.toml
[INFO] crate souvik1997/fsbench has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing souvik1997/fsbench against master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-0/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/souvik1997/fsbench:/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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "build" "--frozen"`
[INFO] [stdout] 4ce3b47340336706bc7ae2f3e18974e5e519a363d08ce9b47ea734cc465486bd
[INFO] running `"docker" "start" "-a" "4ce3b47340336706bc7ae2f3e18974e5e519a363d08ce9b47ea734cc465486bd"`
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling log v0.4.1
[INFO] [stderr]    Compiling serde_json v1.0.11
[INFO] [stderr]    Compiling num-bigint v0.1.43
[INFO] [stderr]    Compiling num-derive v0.2.0
[INFO] [stderr]    Compiling tempdir v0.3.6
[INFO] [stderr]    Compiling rayon v1.0.0
[INFO] [stderr]    Compiling bytes v0.4.6
[INFO] [stderr]    Compiling fern v0.5.2
[INFO] [stderr]    Compiling nix v0.10.0
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling chrono v0.4.0
[INFO] [stderr]    Compiling fsbench v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::process::Command`
[INFO] [stderr]    --> src/fsbench/blktrace/trace.rs:173:13
[INFO] [stderr]     |
[INFO] [stderr] 173 |         use std::process::Command;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `split_string`
[INFO] [stderr]   --> src/fsbench/operation.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let split_string = vec![String::new()];
[INFO] [stderr]    |         ^^^^^^^^^^^^ help: consider prefixing with an underscore: `_split_string`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `bytes` is assigned to, but never used
[INFO] [stderr]    --> src/fsbench/operation.rs:304:17
[INFO] [stderr]     |
[INFO] [stderr] 304 |         let mut bytes = 0;
[INFO] [stderr]     |                 ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: consider using `_bytes` instead
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `SECTOR_SIZE`
[INFO] [stderr]  --> src/fsbench/blktrace/trace.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub const SECTOR_SIZE: usize = 512;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `elapsed`
[INFO] [stderr]    --> src/fsbench/blktrace/trace.rs:147:5
[INFO] [stderr]     |
[INFO] [stderr] 147 |     elapsed: Duration,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `total_duration`
[INFO] [stderr]    --> src/fsbench/blktrace/trace.rs:243:5
[INFO] [stderr]     |
[INFO] [stderr] 243 |     pub fn total_duration(&self) -> Duration {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Read`
[INFO] [stderr]    --> src/fsbench/operation.rs:160:1
[INFO] [stderr]     |
[INFO] [stderr] 160 | pub struct Read {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/fsbench/operation.rs:165:5
[INFO] [stderr]     |
[INFO] [stderr] 165 |     pub fn new() -> Read {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `run`
[INFO] [stderr]    --> src/fsbench/operation.rs:171:5
[INFO] [stderr]     |
[INFO] [stderr] 171 |     pub fn run(&mut self, fd: RawFd, buf: &mut [u8]) -> nix::Result<usize> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Write`
[INFO] [stderr]    --> src/fsbench/operation.rs:192:1
[INFO] [stderr]     |
[INFO] [stderr] 192 | pub struct Write {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/fsbench/operation.rs:197:5
[INFO] [stderr]     |
[INFO] [stderr] 197 |     pub fn new() -> Write {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `run`
[INFO] [stderr]    --> src/fsbench/operation.rs:203:5
[INFO] [stderr]     |
[INFO] [stderr] 203 |     pub fn run(&mut self, fd: RawFd, buf: &[u8]) -> nix::Result<usize> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `ops_per_second`
[INFO] [stderr]   --> src/fsbench/statistics.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |     pub fn ops_per_second(&self) -> f64 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `duration_extras` has been stable since 1.27.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(duration_extras)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(stable_features)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.16s
[INFO] running `"docker" "inspect" "4ce3b47340336706bc7ae2f3e18974e5e519a363d08ce9b47ea734cc465486bd"`
[INFO] running `"docker" "rm" "-f" "4ce3b47340336706bc7ae2f3e18974e5e519a363d08ce9b47ea734cc465486bd"`
[INFO] [stdout] 4ce3b47340336706bc7ae2f3e18974e5e519a363d08ce9b47ea734cc465486bd
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-0/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/souvik1997/fsbench:/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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] f3155de83b0090dd8a94a468003fb8fd690ced140c5db22b83a4128d3df7d42d
[INFO] running `"docker" "start" "-a" "f3155de83b0090dd8a94a468003fb8fd690ced140c5db22b83a4128d3df7d42d"`
[INFO] [stderr]    Compiling fsbench v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::process::Command`
[INFO] [stderr]    --> src/fsbench/blktrace/trace.rs:173:13
[INFO] [stderr]     |
[INFO] [stderr] 173 |         use std::process::Command;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `split_string`
[INFO] [stderr]   --> src/fsbench/operation.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let split_string = vec![String::new()];
[INFO] [stderr]    |         ^^^^^^^^^^^^ help: consider prefixing with an underscore: `_split_string`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `bytes` is assigned to, but never used
[INFO] [stderr]    --> src/fsbench/operation.rs:304:17
[INFO] [stderr]     |
[INFO] [stderr] 304 |         let mut bytes = 0;
[INFO] [stderr]     |                 ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: consider using `_bytes` instead
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `SECTOR_SIZE`
[INFO] [stderr]  --> src/fsbench/blktrace/trace.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub const SECTOR_SIZE: usize = 512;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `elapsed`
[INFO] [stderr]    --> src/fsbench/blktrace/trace.rs:147:5
[INFO] [stderr]     |
[INFO] [stderr] 147 |     elapsed: Duration,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `total_duration`
[INFO] [stderr]    --> src/fsbench/blktrace/trace.rs:243:5
[INFO] [stderr]     |
[INFO] [stderr] 243 |     pub fn total_duration(&self) -> Duration {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Read`
[INFO] [stderr]    --> src/fsbench/operation.rs:160:1
[INFO] [stderr]     |
[INFO] [stderr] 160 | pub struct Read {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/fsbench/operation.rs:165:5
[INFO] [stderr]     |
[INFO] [stderr] 165 |     pub fn new() -> Read {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `run`
[INFO] [stderr]    --> src/fsbench/operation.rs:171:5
[INFO] [stderr]     |
[INFO] [stderr] 171 |     pub fn run(&mut self, fd: RawFd, buf: &mut [u8]) -> nix::Result<usize> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Write`
[INFO] [stderr]    --> src/fsbench/operation.rs:192:1
[INFO] [stderr]     |
[INFO] [stderr] 192 | pub struct Write {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/fsbench/operation.rs:197:5
[INFO] [stderr]     |
[INFO] [stderr] 197 |     pub fn new() -> Write {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `run`
[INFO] [stderr]    --> src/fsbench/operation.rs:203:5
[INFO] [stderr]     |
[INFO] [stderr] 203 |     pub fn run(&mut self, fd: RawFd, buf: &[u8]) -> nix::Result<usize> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `ops_per_second`
[INFO] [stderr]   --> src/fsbench/statistics.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |     pub fn ops_per_second(&self) -> f64 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `duration_extras` has been stable since 1.27.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(duration_extras)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(stable_features)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.48s
[INFO] running `"docker" "inspect" "f3155de83b0090dd8a94a468003fb8fd690ced140c5db22b83a4128d3df7d42d"`
[INFO] running `"docker" "rm" "-f" "f3155de83b0090dd8a94a468003fb8fd690ced140c5db22b83a4128d3df7d42d"`
[INFO] [stdout] f3155de83b0090dd8a94a468003fb8fd690ced140c5db22b83a4128d3df7d42d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-0/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/souvik1997/fsbench:/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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "test" "--frozen"`
[INFO] [stdout] 5831e6932059f604a33ddf197798e01a1c1e7f921940c0a511602ab67cbfcb65
[INFO] running `"docker" "start" "-a" "5831e6932059f604a33ddf197798e01a1c1e7f921940c0a511602ab67cbfcb65"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.20s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/fsbench-ea27abbb26b0c653
[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
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "5831e6932059f604a33ddf197798e01a1c1e7f921940c0a511602ab67cbfcb65"`
[INFO] running `"docker" "rm" "-f" "5831e6932059f604a33ddf197798e01a1c1e7f921940c0a511602ab67cbfcb65"`
[INFO] [stdout] 5831e6932059f604a33ddf197798e01a1c1e7f921940c0a511602ab67cbfcb65