[INFO] updating cached repository https://github.com/souvik1997/fsbench
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 77cc337e9e88a07ae9381abb4710f4c1b4ae2423
[INFO] checking souvik1997/fsbench against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsouvik1997%2Ffsbench" "/workspace/builds/worker-12/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/souvik1997/fsbench on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/souvik1997/fsbench
[INFO] finished tweaking git repo https://github.com/souvik1997/fsbench
[INFO] tweaked toml for git repo https://github.com/souvik1997/fsbench written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/souvik1997/fsbench already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6005679b0b287164550323519ba893c89b82453197d9868fdfa482e2dbe5e997
[INFO] running `"docker" "start" "-a" "6005679b0b287164550323519ba893c89b82453197d9868fdfa482e2dbe5e997"`
[INFO] [stderr]     Checking num-traits v0.2.2
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking winapi v0.2.8
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[INFO] [stderr]    Compiling serde_derive_internals v0.20.0
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[INFO] [stderr]    Compiling serde_derive v1.0.29
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[INFO] [stderr]     Checking serde_json v1.0.11
[INFO] [stderr]     Checking fsbench v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/fsbench/blktrace/trace.rs:33:1
[INFO] [stderr]    |
[INFO] [stderr] 33 | / bitflags! {
[INFO] [stderr] 34 | |     pub struct Category: u16 {
[INFO] [stderr] 35 | |         const READ    = 1 << 0;    /* reads */
[INFO] [stderr] 36 | |         const WRITE    = 1 << 1;    /* writes */
[INFO] [stderr] ...  |
[INFO] [stderr] 53 | |     }
[INFO] [stderr] 54 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/fsbench/blktrace/trace.rs:33:1
[INFO] [stderr]    |
[INFO] [stderr] 33 | / bitflags! {
[INFO] [stderr] 34 | |     pub struct Category: u16 {
[INFO] [stderr] 35 | |         const READ    = 1 << 0;    /* reads */
[INFO] [stderr] 36 | |         const WRITE    = 1 << 1;    /* writes */
[INFO] [stderr] ...  |
[INFO] [stderr] 53 | |     }
[INFO] [stderr] 54 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/fsbench/blktrace/trace.rs:33:1
[INFO] [stderr]    |
[INFO] [stderr] 33 | / bitflags! {
[INFO] [stderr] 34 | |     pub struct Category: u16 {
[INFO] [stderr] 35 | |         const READ    = 1 << 0;    /* reads */
[INFO] [stderr] 36 | |         const WRITE    = 1 << 1;    /* writes */
[INFO] [stderr] ...  |
[INFO] [stderr] 53 | |     }
[INFO] [stderr] 54 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/benchmarks/create.rs:22:62
[INFO] [stderr]    |
[INFO] [stderr] 22 |     pub fn load<P: AsRef<Path>>(path: P) -> Result<Self, Box<Error>> {
[INFO] [stderr]    |                                                              ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/benchmarks/create.rs:63:62
[INFO] [stderr]    |
[INFO] [stderr] 63 |     pub fn load<P: AsRef<Path>>(path: P) -> Result<Self, Box<Error>> {
[INFO] [stderr]    |                                                              ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/benchmarks/create.rs:94:62
[INFO] [stderr]    |
[INFO] [stderr] 94 |     pub fn load<P: AsRef<Path>>(path: P) -> Result<Self, Box<Error>> {
[INFO] [stderr]    |                                                              ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: the item `rand` is imported redundantly
[INFO] [stderr]    --> src/benchmarks/create.rs:255:13
[INFO] [stderr]     |
[INFO] [stderr] 255 |         use super::rand;
[INFO] [stderr]     |             ^^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/main.rs:9:1
[INFO] [stderr]     |
[INFO] [stderr] 9   | extern crate rand;
[INFO] [stderr]     | ------------------ the item `rand` is already imported here
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/benchmarks/delete.rs:33:62
[INFO] [stderr]    |
[INFO] [stderr] 33 |     pub fn load<P: AsRef<Path>>(path: P) -> Result<Self, Box<Error>> {
[INFO] [stderr]    |                                                              ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: the item `serde_json` is imported redundantly
[INFO] [stderr]   --> src/benchmarks/delete.rs:34:13
[INFO] [stderr]    |
[INFO] [stderr] 10 | use super::serde_json;
[INFO] [stderr]    |     ----------------- the item `serde_json` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 34 |         use super::serde_json;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `rand` is imported redundantly
[INFO] [stderr]   --> src/benchmarks/delete.rs:55:13
[INFO] [stderr]    |
[INFO] [stderr] 55 |         use super::rand;
[INFO] [stderr]    |             ^^^^^^^^^^^
[INFO] [stderr]    | 
[INFO] [stderr]   ::: src/main.rs:9:1
[INFO] [stderr]    |
[INFO] [stderr] 9  | extern crate rand;
[INFO] [stderr]    | ------------------ the item `rand` is already imported here
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/benchmarks/rename.rs:34:62
[INFO] [stderr]    |
[INFO] [stderr] 34 |     pub fn load<P: AsRef<Path>>(path: P) -> Result<Self, Box<Error>> {
[INFO] [stderr]    |                                                              ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: the item `serde_json` is imported redundantly
[INFO] [stderr]   --> src/benchmarks/rename.rs:35:13
[INFO] [stderr]    |
[INFO] [stderr] 11 | use super::serde_json;
[INFO] [stderr]    |     ----------------- the item `serde_json` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 35 |         use super::serde_json;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/benchmarks/listdir.rs:34:62
[INFO] [stderr]    |
[INFO] [stderr] 34 |     pub fn load<P: AsRef<Path>>(path: P) -> Result<Self, Box<Error>> {
[INFO] [stderr]    |                                                              ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: the item `serde_json` is imported redundantly
[INFO] [stderr]   --> src/benchmarks/listdir.rs:35:13
[INFO] [stderr]    |
[INFO] [stderr] 11 | use super::serde_json;
[INFO] [stderr]    |     ----------------- the item `serde_json` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 35 |         use super::serde_json;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `num` is imported redundantly
[INFO] [stderr]   --> src/fsbench/blktrace/trace.rs:78:13
[INFO] [stderr]    |
[INFO] [stderr] 78 |         use num;
[INFO] [stderr]    |             ^^^
[INFO] [stderr]    | 
[INFO] [stderr]   ::: src/main.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | extern crate num;
[INFO] [stderr]    | ----------------- the item `num` is already imported here
[INFO] [stderr] 
[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] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/fsbench/blktrace/trace.rs:33:1
[INFO] [stderr]    |
[INFO] [stderr] 33 | / bitflags! {
[INFO] [stderr] 34 | |     pub struct Category: u16 {
[INFO] [stderr] 35 | |         const READ    = 1 << 0;    /* reads */
[INFO] [stderr] 36 | |         const WRITE    = 1 << 1;    /* writes */
[INFO] [stderr] ...  |
[INFO] [stderr] 53 | |     }
[INFO] [stderr] 54 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/fsbench/blktrace/trace.rs:33:1
[INFO] [stderr]    |
[INFO] [stderr] 33 | / bitflags! {
[INFO] [stderr] 34 | |     pub struct Category: u16 {
[INFO] [stderr] 35 | |         const READ    = 1 << 0;    /* reads */
[INFO] [stderr] 36 | |         const WRITE    = 1 << 1;    /* writes */
[INFO] [stderr] ...  |
[INFO] [stderr] 53 | |     }
[INFO] [stderr] 54 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/fsbench/blktrace/trace.rs:33:1
[INFO] [stderr]    |
[INFO] [stderr] 33 | / bitflags! {
[INFO] [stderr] 34 | |     pub struct Category: u16 {
[INFO] [stderr] 35 | |         const READ    = 1 << 0;    /* reads */
[INFO] [stderr] 36 | |         const WRITE    = 1 << 1;    /* writes */
[INFO] [stderr] ...  |
[INFO] [stderr] 53 | |     }
[INFO] [stderr] 54 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/benchmarks/create.rs:22:62
[INFO] [stderr]    |
[INFO] [stderr] 22 |     pub fn load<P: AsRef<Path>>(path: P) -> Result<Self, Box<Error>> {
[INFO] [stderr]    |                                                              ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/benchmarks/create.rs:63:62
[INFO] [stderr]    |
[INFO] [stderr] 63 |     pub fn load<P: AsRef<Path>>(path: P) -> Result<Self, Box<Error>> {
[INFO] [stderr]    |                                                              ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/benchmarks/create.rs:94:62
[INFO] [stderr]    |
[INFO] [stderr] 94 |     pub fn load<P: AsRef<Path>>(path: P) -> Result<Self, Box<Error>> {
[INFO] [stderr]    |                                                              ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: the item `rand` is imported redundantly
[INFO] [stderr]    --> src/benchmarks/create.rs:255:13
[INFO] [stderr]     |
[INFO] [stderr] 255 |         use super::rand;
[INFO] [stderr]     |             ^^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/main.rs:9:1
[INFO] [stderr]     |
[INFO] [stderr] 9   | extern crate rand;
[INFO] [stderr]     | ------------------ the item `rand` is already imported here
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/benchmarks/delete.rs:33:62
[INFO] [stderr]    |
[INFO] [stderr] 33 |     pub fn load<P: AsRef<Path>>(path: P) -> Result<Self, Box<Error>> {
[INFO] [stderr]    |                                                              ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: the item `serde_json` is imported redundantly
[INFO] [stderr]   --> src/benchmarks/delete.rs:34:13
[INFO] [stderr]    |
[INFO] [stderr] 10 | use super::serde_json;
[INFO] [stderr]    |     ----------------- the item `serde_json` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 34 |         use super::serde_json;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `rand` is imported redundantly
[INFO] [stderr]   --> src/benchmarks/delete.rs:55:13
[INFO] [stderr]    |
[INFO] [stderr] 55 |         use super::rand;
[INFO] [stderr]    |             ^^^^^^^^^^^
[INFO] [stderr]    | 
[INFO] [stderr]   ::: src/main.rs:9:1
[INFO] [stderr]    |
[INFO] [stderr] 9  | extern crate rand;
[INFO] [stderr]    | ------------------ the item `rand` is already imported here
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/benchmarks/rename.rs:34:62
[INFO] [stderr]    |
[INFO] [stderr] 34 |     pub fn load<P: AsRef<Path>>(path: P) -> Result<Self, Box<Error>> {
[INFO] [stderr]    |                                                              ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: the item `serde_json` is imported redundantly
[INFO] [stderr]   --> src/benchmarks/rename.rs:35:13
[INFO] [stderr]    |
[INFO] [stderr] 11 | use super::serde_json;
[INFO] [stderr]    |     ----------------- the item `serde_json` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 35 |         use super::serde_json;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/benchmarks/listdir.rs:34:62
[INFO] [stderr]    |
[INFO] [stderr] 34 |     pub fn load<P: AsRef<Path>>(path: P) -> Result<Self, Box<Error>> {
[INFO] [stderr]    |                                                              ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: the item `serde_json` is imported redundantly
[INFO] [stderr]   --> src/benchmarks/listdir.rs:35:13
[INFO] [stderr]    |
[INFO] [stderr] 11 | use super::serde_json;
[INFO] [stderr]    |     ----------------- the item `serde_json` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 35 |         use super::serde_json;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `num` is imported redundantly
[INFO] [stderr]   --> src/fsbench/blktrace/trace.rs:78:13
[INFO] [stderr]    |
[INFO] [stderr] 78 |         use num;
[INFO] [stderr]    |             ^^^
[INFO] [stderr]    | 
[INFO] [stderr]   ::: src/main.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | extern crate num;
[INFO] [stderr]    | ----------------- the item `num` is already imported here
[INFO] [stderr] 
[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] 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: 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: 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: 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] 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: 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: 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 55.40s
[INFO] running `"docker" "inspect" "6005679b0b287164550323519ba893c89b82453197d9868fdfa482e2dbe5e997"`
[INFO] running `"docker" "rm" "-f" "6005679b0b287164550323519ba893c89b82453197d9868fdfa482e2dbe5e997"`
[INFO] [stdout] 6005679b0b287164550323519ba893c89b82453197d9868fdfa482e2dbe5e997