[INFO] fetching crate bigqueue 0.0.2...
[INFO] testing bigqueue-0.0.2 against 1.69.0 for beta-1.70-1
[INFO] extracting crate bigqueue 0.0.2 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate bigqueue 0.0.2 on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bigqueue 0.0.2
[INFO] finished tweaking crates.io crate bigqueue 0.0.2
[INFO] tweaked toml for crates.io crate bigqueue 0.0.2 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+1.69.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded lru v0.1.17
[INFO] [stderr]   Downloaded hashbrown v0.5.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:97d61d7686bf65f8ecb15491ab51835e82dc9176a96a831f143a431b191fc501" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cd0150730e3897b1cfe866f4923847e5c701728e9c774c44706dd7d8f33250ef
[INFO] running `Command { std: "docker" "start" "-a" "cd0150730e3897b1cfe866f4923847e5c701728e9c774c44706dd7d8f33250ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cd0150730e3897b1cfe866f4923847e5c701728e9c774c44706dd7d8f33250ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd0150730e3897b1cfe866f4923847e5c701728e9c774c44706dd7d8f33250ef", kill_on_drop: false }`
[INFO] [stdout] cd0150730e3897b1cfe866f4923847e5c701728e9c774c44706dd7d8f33250ef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTDOCFLAGS=--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@sha256:97d61d7686bf65f8ecb15491ab51835e82dc9176a96a831f143a431b191fc501" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dcccdeba3999f5debda034159f80d283b6d362b067a25751dc85f2fa6e018dbd
[INFO] running `Command { std: "docker" "start" "-a" "dcccdeba3999f5debda034159f80d283b6d362b067a25751dc85f2fa6e018dbd", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling libc v0.2.142
[INFO] [stderr]    Compiling cc v1.0.79
[INFO] [stderr]    Compiling gimli v0.27.2
[INFO] [stderr]    Compiling unicode-xid v0.2.4
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling miniz_oxide v0.6.2
[INFO] [stderr]    Compiling rustc-demangle v0.1.23
[INFO] [stderr]    Compiling object v0.30.3
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling hashbrown v0.5.0
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling backtrace v0.3.67
[INFO] [stderr]    Compiling lru v0.1.17
[INFO] [stderr]    Compiling memmap v0.7.0
[INFO] [stderr]    Compiling addr2line v0.19.0
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling bigqueue v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/bigqueue.rs:234:26
[INFO] [stdout]     |
[INFO] [stdout] 234 |         let m = unsafe { (&mut (*self.q_head.get()).mmap) };
[INFO] [stdout]     |                          ^                              ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 234 -         let m = unsafe { (&mut (*self.q_head.get()).mmap) };
[INFO] [stdout] 234 +         let m = unsafe { &mut (*self.q_head.get()).mmap };
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/bigqueue.rs:239:26
[INFO] [stdout]     |
[INFO] [stdout] 239 |         let m = unsafe { (&mut (*self.q_tail.get())) };
[INFO] [stdout]     |                          ^                         ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 239 -         let m = unsafe { (&mut (*self.q_tail.get())) };
[INFO] [stdout] 239 +         let m = unsafe { &mut (*self.q_tail.get()) };
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/bigqueue.rs:357:41
[INFO] [stdout]     |
[INFO] [stdout] 357 |     fn read_length(&mut self) -> Option<(usize)> {
[INFO] [stdout]     |                                         ^     ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 357 -     fn read_length(&mut self) -> Option<(usize)> {
[INFO] [stdout] 357 +     fn read_length(&mut self) -> Option<usize> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num_arenas`
[INFO] [stdout]   --> src/bigqueue.rs:53:13
[INFO] [stdout]    |
[INFO] [stdout] 53 |         let num_arenas = t_aid + 1 - h_aid;
[INFO] [stdout]    |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_arenas`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `tail` is never read
[INFO] [stdout]   --> src/bigqueue.rs:59:17
[INFO] [stdout]    |
[INFO] [stdout] 59 |         let mut tail: Option<Rc<UnsafeCell<Arena>>> = None;
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `head` is never read
[INFO] [stdout]   --> src/bigqueue.rs:60:17
[INFO] [stdout]    |
[INFO] [stdout] 60 |         let mut head: Option<Rc<UnsafeCell<Arena>>> = None;
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_bytes` is never used
[INFO] [stdout]    --> src/lib.rs:212:4
[INFO] [stdout]     |
[INFO] [stdout] 212 | fn read_bytes(mmap: &MmapMut, offset: usize, length: u64) -> Option<Vec<u8>> {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `file` is never read
[INFO] [stdout]    --> src/bigqueue.rs:431:5
[INFO] [stdout]     |
[INFO] [stdout] 430 | pub struct Index {
[INFO] [stdout]     |            ----- field in this struct
[INFO] [stdout] 431 |     file: String,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `delete_arena_backed_file` is never used
[INFO] [stdout]    --> src/bigqueue.rs:302:8
[INFO] [stdout]     |
[INFO] [stdout] 302 |     fn delete_arena_backed_file(&self, aid: usize) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `flush` is never used
[INFO] [stdout]    --> src/bigqueue.rs:518:12
[INFO] [stdout]     |
[INFO] [stdout] 518 |     pub fn flush(&mut self) -> Result<()> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/bigqueue.rs:147:9
[INFO] [stdout]     |
[INFO] [stdout] 147 |         self.write_bytes(n_offset, bytes);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/bigqueue.rs:162:17
[INFO] [stdout]     |
[INFO] [stdout] 162 |                 self.flip_head_page_to(head_aid);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/bigqueue.rs:222:9
[INFO] [stdout]     |
[INFO] [stdout] 222 |         self.index.set_head(aid, offset);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/bigqueue.rs:228:9
[INFO] [stdout]     |
[INFO] [stdout] 228 |         self.index.set_tail(aid, offset);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/bigqueue.rs:317:9
[INFO] [stdout]     |
[INFO] [stdout] 317 |         self.get_tail().write_u64_at(i_offset, length);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/bigqueue.rs:361:13
[INFO] [stdout]     |
[INFO] [stdout] 361 |             self.flip_head_page_to(self.head_aid + 1);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/bigqueue.rs:367:17
[INFO] [stdout]     |
[INFO] [stdout] 367 |                 self.flip_head_page_to(self.head_aid + 1);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/bigqueue.rs:391:21
[INFO] [stdout]     |
[INFO] [stdout] 391 |                     self.flip_head_page_to(self.head_aid + 1);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/bigqueue.rs:400:25
[INFO] [stdout]     |
[INFO] [stdout] 400 |                         self.flip_head_page_to(self.head_aid + 1);
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.77s
[INFO] running `Command { std: "docker" "inspect" "dcccdeba3999f5debda034159f80d283b6d362b067a25751dc85f2fa6e018dbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcccdeba3999f5debda034159f80d283b6d362b067a25751dc85f2fa6e018dbd", kill_on_drop: false }`
[INFO] [stdout] dcccdeba3999f5debda034159f80d283b6d362b067a25751dc85f2fa6e018dbd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTDOCFLAGS=--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@sha256:97d61d7686bf65f8ecb15491ab51835e82dc9176a96a831f143a431b191fc501" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e5f8ac11cea6b0baf711240b6a2c5b23702d2c7a56e0f1119ba16ab22727527e
[INFO] running `Command { std: "docker" "start" "-a" "e5f8ac11cea6b0baf711240b6a2c5b23702d2c7a56e0f1119ba16ab22727527e", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.15
[INFO] [stderr]    Compiling semver v1.0.17
[INFO] [stderr]    Compiling serde v1.0.160
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling either v1.8.1
[INFO] [stderr]    Compiling serde_json v1.0.96
[INFO] [stderr]    Compiling rayon-core v1.11.0
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling itoa v1.0.6
[INFO] [stderr]    Compiling ryu v1.0.13
[INFO] [stderr]    Compiling num_cpus v1.15.0
[INFO] [stderr]    Compiling unicode-width v0.1.10
[INFO] [stderr]    Compiling memoffset v0.8.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.14
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling serde_derive v1.0.160
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling crossbeam-channel v0.5.8
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling syn v2.0.15
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]    Compiling crossbeam-deque v0.8.3
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling criterion-plot v0.3.1
[INFO] [stderr]    Compiling walkdir v2.3.3
[INFO] [stderr]    Compiling rand_xoshiro v0.1.0
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling rayon v1.7.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/bigqueue.rs:234:26
[INFO] [stdout]     |
[INFO] [stdout] 234 |         let m = unsafe { (&mut (*self.q_head.get()).mmap) };
[INFO] [stdout]     |                          ^                              ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 234 -         let m = unsafe { (&mut (*self.q_head.get()).mmap) };
[INFO] [stdout] 234 +         let m = unsafe { &mut (*self.q_head.get()).mmap };
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/bigqueue.rs:239:26
[INFO] [stdout]     |
[INFO] [stdout] 239 |         let m = unsafe { (&mut (*self.q_tail.get())) };
[INFO] [stdout]     |                          ^                         ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 239 -         let m = unsafe { (&mut (*self.q_tail.get())) };
[INFO] [stdout] 239 +         let m = unsafe { &mut (*self.q_tail.get()) };
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/bigqueue.rs:357:41
[INFO] [stdout]     |
[INFO] [stdout] 357 |     fn read_length(&mut self) -> Option<(usize)> {
[INFO] [stdout]     |                                         ^     ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 357 -     fn read_length(&mut self) -> Option<(usize)> {
[INFO] [stdout] 357 +     fn read_length(&mut self) -> Option<usize> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num_arenas`
[INFO] [stdout]   --> src/bigqueue.rs:53:13
[INFO] [stdout]    |
[INFO] [stdout] 53 |         let num_arenas = t_aid + 1 - h_aid;
[INFO] [stdout]    |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_arenas`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `tail` is never read
[INFO] [stdout]   --> src/bigqueue.rs:59:17
[INFO] [stdout]    |
[INFO] [stdout] 59 |         let mut tail: Option<Rc<UnsafeCell<Arena>>> = None;
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `head` is never read
[INFO] [stdout]   --> src/bigqueue.rs:60:17
[INFO] [stdout]    |
[INFO] [stdout] 60 |         let mut head: Option<Rc<UnsafeCell<Arena>>> = None;
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_bytes` is never used
[INFO] [stdout]    --> src/lib.rs:212:4
[INFO] [stdout]     |
[INFO] [stdout] 212 | fn read_bytes(mmap: &MmapMut, offset: usize, length: u64) -> Option<Vec<u8>> {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `file` is never read
[INFO] [stdout]    --> src/bigqueue.rs:431:5
[INFO] [stdout]     |
[INFO] [stdout] 430 | pub struct Index {
[INFO] [stdout]     |            ----- field in this struct
[INFO] [stdout] 431 |     file: String,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `delete_arena_backed_file` is never used
[INFO] [stdout]    --> src/bigqueue.rs:302:8
[INFO] [stdout]     |
[INFO] [stdout] 302 |     fn delete_arena_backed_file(&self, aid: usize) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `flush` is never used
[INFO] [stdout]    --> src/bigqueue.rs:518:12
[INFO] [stdout]     |
[INFO] [stdout] 518 |     pub fn flush(&mut self) -> Result<()> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/bigqueue.rs:147:9
[INFO] [stdout]     |
[INFO] [stdout] 147 |         self.write_bytes(n_offset, bytes);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/bigqueue.rs:162:17
[INFO] [stdout]     |
[INFO] [stdout] 162 |                 self.flip_head_page_to(head_aid);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/bigqueue.rs:222:9
[INFO] [stdout]     |
[INFO] [stdout] 222 |         self.index.set_head(aid, offset);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/bigqueue.rs:228:9
[INFO] [stdout]     |
[INFO] [stdout] 228 |         self.index.set_tail(aid, offset);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/bigqueue.rs:317:9
[INFO] [stdout]     |
[INFO] [stdout] 317 |         self.get_tail().write_u64_at(i_offset, length);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/bigqueue.rs:361:13
[INFO] [stdout]     |
[INFO] [stdout] 361 |             self.flip_head_page_to(self.head_aid + 1);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/bigqueue.rs:367:17
[INFO] [stdout]     |
[INFO] [stdout] 367 |                 self.flip_head_page_to(self.head_aid + 1);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/bigqueue.rs:391:21
[INFO] [stdout]     |
[INFO] [stdout] 391 |                     self.flip_head_page_to(self.head_aid + 1);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/bigqueue.rs:400:25
[INFO] [stdout]     |
[INFO] [stdout] 400 |                         self.flip_head_page_to(self.head_aid + 1);
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling csv v1.2.1
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling criterion v0.2.11
[INFO] [stderr]    Compiling bigqueue v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/bigqueue.rs:234:26
[INFO] [stdout]     |
[INFO] [stdout] 234 |         let m = unsafe { (&mut (*self.q_head.get()).mmap) };
[INFO] [stdout]     |                          ^                              ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 234 -         let m = unsafe { (&mut (*self.q_head.get()).mmap) };
[INFO] [stdout] 234 +         let m = unsafe { &mut (*self.q_head.get()).mmap };
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/bigqueue.rs:239:26
[INFO] [stdout]     |
[INFO] [stdout] 239 |         let m = unsafe { (&mut (*self.q_tail.get())) };
[INFO] [stdout]     |                          ^                         ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 239 -         let m = unsafe { (&mut (*self.q_tail.get())) };
[INFO] [stdout] 239 +         let m = unsafe { &mut (*self.q_tail.get()) };
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/bigqueue.rs:357:41
[INFO] [stdout]     |
[INFO] [stdout] 357 |     fn read_length(&mut self) -> Option<(usize)> {
[INFO] [stdout]     |                                         ^     ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 357 -     fn read_length(&mut self) -> Option<(usize)> {
[INFO] [stdout] 357 +     fn read_length(&mut self) -> Option<usize> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num_arenas`
[INFO] [stdout]   --> src/bigqueue.rs:53:13
[INFO] [stdout]    |
[INFO] [stdout] 53 |         let num_arenas = t_aid + 1 - h_aid;
[INFO] [stdout]    |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_arenas`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `tail` is never read
[INFO] [stdout]   --> src/bigqueue.rs:59:17
[INFO] [stdout]    |
[INFO] [stdout] 59 |         let mut tail: Option<Rc<UnsafeCell<Arena>>> = None;
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `head` is never read
[INFO] [stdout]   --> src/bigqueue.rs:60:17
[INFO] [stdout]    |
[INFO] [stdout] 60 |         let mut head: Option<Rc<UnsafeCell<Arena>>> = None;
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_bytes` is never used
[INFO] [stdout]    --> src/lib.rs:212:4
[INFO] [stdout]     |
[INFO] [stdout] 212 | fn read_bytes(mmap: &MmapMut, offset: usize, length: u64) -> Option<Vec<u8>> {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `file` is never read
[INFO] [stdout]    --> src/bigqueue.rs:431:5
[INFO] [stdout]     |
[INFO] [stdout] 430 | pub struct Index {
[INFO] [stdout]     |            ----- field in this struct
[INFO] [stdout] 431 |     file: String,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `delete_arena_backed_file` is never used
[INFO] [stdout]    --> src/bigqueue.rs:302:8
[INFO] [stdout]     |
[INFO] [stdout] 302 |     fn delete_arena_backed_file(&self, aid: usize) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/bigqueue.rs:147:9
[INFO] [stdout]     |
[INFO] [stdout] 147 |         self.write_bytes(n_offset, bytes);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/bigqueue.rs:162:17
[INFO] [stdout]     |
[INFO] [stdout] 162 |                 self.flip_head_page_to(head_aid);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/bigqueue.rs:222:9
[INFO] [stdout]     |
[INFO] [stdout] 222 |         self.index.set_head(aid, offset);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/bigqueue.rs:228:9
[INFO] [stdout]     |
[INFO] [stdout] 228 |         self.index.set_tail(aid, offset);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/bigqueue.rs:317:9
[INFO] [stdout]     |
[INFO] [stdout] 317 |         self.get_tail().write_u64_at(i_offset, length);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/bigqueue.rs:361:13
[INFO] [stdout]     |
[INFO] [stdout] 361 |             self.flip_head_page_to(self.head_aid + 1);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/bigqueue.rs:367:17
[INFO] [stdout]     |
[INFO] [stdout] 367 |                 self.flip_head_page_to(self.head_aid + 1);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/bigqueue.rs:391:21
[INFO] [stdout]     |
[INFO] [stdout] 391 |                     self.flip_head_page_to(self.head_aid + 1);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/bigqueue.rs:400:25
[INFO] [stdout]     |
[INFO] [stdout] 400 |                         self.flip_head_page_to(self.head_aid + 1);
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/bigqueue.rs:547:9
[INFO] [stdout]     |
[INFO] [stdout] 547 |         qi.set_head(1, 3);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/bigqueue.rs:548:9
[INFO] [stdout]     |
[INFO] [stdout] 548 |         qi.set_tail(1, 4);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/bigqueue.rs:569:9
[INFO] [stdout]     |
[INFO] [stdout] 569 |         t.write_u64_at(0, 100u64);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/bigqueue.rs:570:9
[INFO] [stdout]     |
[INFO] [stdout] 570 |         t.write_u64_at(8, 10u64);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 22 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 40.67s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.2.11
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "e5f8ac11cea6b0baf711240b6a2c5b23702d2c7a56e0f1119ba16ab22727527e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5f8ac11cea6b0baf711240b6a2c5b23702d2c7a56e0f1119ba16ab22727527e", kill_on_drop: false }`
[INFO] [stdout] e5f8ac11cea6b0baf711240b6a2c5b23702d2c7a56e0f1119ba16ab22727527e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTDOCFLAGS=--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@sha256:97d61d7686bf65f8ecb15491ab51835e82dc9176a96a831f143a431b191fc501" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e3af1af65b9a6238476925fae0f62623649a5067ec1dab520678e9e6b24ba7a1
[INFO] running `Command { std: "docker" "start" "-a" "e3af1af65b9a6238476925fae0f62623649a5067ec1dab520678e9e6b24ba7a1", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/bigqueue.rs:234:26
[INFO] [stderr]     |
[INFO] [stderr] 234 |         let m = unsafe { (&mut (*self.q_head.get()).mmap) };
[INFO] [stderr]     |                          ^                              ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 234 -         let m = unsafe { (&mut (*self.q_head.get()).mmap) };
[INFO] [stderr] 234 +         let m = unsafe { &mut (*self.q_head.get()).mmap };
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/bigqueue.rs:239:26
[INFO] [stderr]     |
[INFO] [stderr] 239 |         let m = unsafe { (&mut (*self.q_tail.get())) };
[INFO] [stderr]     |                          ^                         ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 239 -         let m = unsafe { (&mut (*self.q_tail.get())) };
[INFO] [stderr] 239 +         let m = unsafe { &mut (*self.q_tail.get()) };
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/bigqueue.rs:357:41
[INFO] [stderr]     |
[INFO] [stderr] 357 |     fn read_length(&mut self) -> Option<(usize)> {
[INFO] [stderr]     |                                         ^     ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 357 -     fn read_length(&mut self) -> Option<(usize)> {
[INFO] [stderr] 357 +     fn read_length(&mut self) -> Option<usize> {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `num_arenas`
[INFO] [stderr]   --> src/bigqueue.rs:53:13
[INFO] [stderr]    |
[INFO] [stderr] 53 |         let num_arenas = t_aid + 1 - h_aid;
[INFO] [stderr]    |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_arenas`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `tail` is never read
[INFO] [stderr]   --> src/bigqueue.rs:59:17
[INFO] [stderr]    |
[INFO] [stderr] 59 |         let mut tail: Option<Rc<UnsafeCell<Arena>>> = None;
[INFO] [stderr]    |                 ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `head` is never read
[INFO] [stderr]   --> src/bigqueue.rs:60:17
[INFO] [stderr]    |
[INFO] [stderr] 60 |         let mut head: Option<Rc<UnsafeCell<Arena>>> = None;
[INFO] [stderr]    |                 ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: function `read_bytes` is never used
[INFO] [stderr]    --> src/lib.rs:212:4
[INFO] [stderr]     |
[INFO] [stderr] 212 | fn read_bytes(mmap: &MmapMut, offset: usize, length: u64) -> Option<Vec<u8>> {
[INFO] [stderr]     |    ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `file` is never read
[INFO] [stderr]    --> src/bigqueue.rs:431:5
[INFO] [stderr]     |
[INFO] [stderr] 430 | pub struct Index {
[INFO] [stderr]     |            ----- field in this struct
[INFO] [stderr] 431 |     file: String,
[INFO] [stderr]     |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `delete_arena_backed_file` is never used
[INFO] [stderr]    --> src/bigqueue.rs:302:8
[INFO] [stderr]     |
[INFO] [stderr] 302 |     fn delete_arena_backed_file(&self, aid: usize) -> bool {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `flush` is never used
[INFO] [stderr]    --> src/bigqueue.rs:518:12
[INFO] [stderr]     |
[INFO] [stderr] 518 |     pub fn flush(&mut self) -> Result<()> {
[INFO] [stderr]     |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/bigqueue.rs:147:9
[INFO] [stderr]     |
[INFO] [stderr] 147 |         self.write_bytes(n_offset, bytes);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/bigqueue.rs:162:17
[INFO] [stderr]     |
[INFO] [stderr] 162 |                 self.flip_head_page_to(head_aid);
[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]    --> src/bigqueue.rs:222:9
[INFO] [stderr]     |
[INFO] [stderr] 222 |         self.index.set_head(aid, offset);
[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]    --> src/bigqueue.rs:228:9
[INFO] [stderr]     |
[INFO] [stderr] 228 |         self.index.set_tail(aid, offset);
[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]    --> src/bigqueue.rs:317:9
[INFO] [stderr]     |
[INFO] [stderr] 317 |         self.get_tail().write_u64_at(i_offset, length);
[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]    --> src/bigqueue.rs:361:13
[INFO] [stderr]     |
[INFO] [stderr] 361 |             self.flip_head_page_to(self.head_aid + 1);
[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]    --> src/bigqueue.rs:367:17
[INFO] [stderr]     |
[INFO] [stderr] 367 |                 self.flip_head_page_to(self.head_aid + 1);
[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]    --> src/bigqueue.rs:391:21
[INFO] [stderr]     |
[INFO] [stderr] 391 |                     self.flip_head_page_to(self.head_aid + 1);
[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]    --> src/bigqueue.rs:400:25
[INFO] [stderr]     |
[INFO] [stderr] 400 |                         self.flip_head_page_to(self.head_aid + 1);
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: `bigqueue` (lib) generated 19 warnings (run `cargo fix --lib -p bigqueue` to apply 4 suggestions)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/bigqueue.rs:547:9
[INFO] [stderr]     |
[INFO] [stderr] 547 |         qi.set_head(1, 3);
[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]    --> src/bigqueue.rs:548:9
[INFO] [stderr]     |
[INFO] [stderr] 548 |         qi.set_tail(1, 4);
[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]    --> src/bigqueue.rs:569:9
[INFO] [stderr]     |
[INFO] [stderr] 569 |         t.write_u64_at(0, 100u64);
[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]    --> src/bigqueue.rs:570:9
[INFO] [stderr]     |
[INFO] [stderr] 570 |         t.write_u64_at(8, 10u64);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: `bigqueue` (lib test) generated 22 warnings (18 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.2.11
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/bigqueue-3fb18fe740aea221)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test bigqueue::tests::test_arena ... ok
[INFO] [stdout] test bigqueue::tests::test_index ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests bigqueue
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> /opt/rustwide/workdir/src/bigqueue.rs:234:26
[INFO] [stderr]     |
[INFO] [stderr] 234 |         let m = unsafe { (&mut (*self.q_head.get()).mmap) };
[INFO] [stderr]     |                          ^                              ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 234 -         let m = unsafe { (&mut (*self.q_head.get()).mmap) };
[INFO] [stderr] 234 +         let m = unsafe { &mut (*self.q_head.get()).mmap };
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> /opt/rustwide/workdir/src/bigqueue.rs:239:26
[INFO] [stderr]     |
[INFO] [stderr] 239 |         let m = unsafe { (&mut (*self.q_tail.get())) };
[INFO] [stderr]     |                          ^                         ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 239 -         let m = unsafe { (&mut (*self.q_tail.get())) };
[INFO] [stderr] 239 +         let m = unsafe { &mut (*self.q_tail.get()) };
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> /opt/rustwide/workdir/src/bigqueue.rs:357:41
[INFO] [stderr]     |
[INFO] [stderr] 357 |     fn read_length(&mut self) -> Option<(usize)> {
[INFO] [stderr]     |                                         ^     ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 357 -     fn read_length(&mut self) -> Option<(usize)> {
[INFO] [stderr] 357 +     fn read_length(&mut self) -> Option<usize> {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - (line 10) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 35) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 10) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `BigQueue`
[INFO] [stdout]  --> src/lib.rs:12:13
[INFO] [stdout]   |
[INFO] [stdout] 5 | let mut q = BigQueue::new(&"/tmp/bigqueue", true).unwrap();
[INFO] [stdout]   |             ^^^^^^^^ use of undeclared type `BigQueue`
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]   |
[INFO] [stdout] 3 | use bigqueue::BigQueue;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - (line 35) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `PathBuf`
[INFO] [stdout]  --> src/lib.rs:36:20
[INFO] [stdout]   |
[INFO] [stdout] 4 | fs::create_dir_all(PathBuf::from("/tmp/spsc")).expect("create dir error");
[INFO] [stdout]   |                    ^^^^^^^ use of undeclared type `PathBuf`
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::path::PathBuf;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Duration`
[INFO] [stdout]   --> src/lib.rs:46:19
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let two_sec = Duration::from_secs(2);
[INFO] [stdout]    |                   ^^^^^^^^ use of undeclared type `Duration`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout] 2  | use core::time::Duration;
[INFO] [stdout]    |
[INFO] [stdout] 2  | use std::time::Duration;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `fs`
[INFO] [stdout]  --> src/lib.rs:36:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | fs::create_dir_all(PathBuf::from("/tmp/spsc")).expect("create dir error");
[INFO] [stdout]   | ^^ use of undeclared crate or module `fs`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `thread`
[INFO] [stdout]  --> src/lib.rs:40:13
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let t = thread::spawn(move|| {
[INFO] [stdout]   |             ^^^^^^ use of undeclared crate or module `thread`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `thread`
[INFO] [stdout]   --> src/lib.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     thread::sleep(two_sec);
[INFO] [stdout]    |     ^^^^^^ use of undeclared crate or module `thread`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `PreciseTime`
[INFO] [stdout]   --> src/lib.rs:49:17
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let start = PreciseTime::now();
[INFO] [stdout]    |                 ^^^^^^^^^^^ use of undeclared type `PreciseTime`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `PreciseTime`
[INFO] [stdout]   --> src/lib.rs:62:15
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let end = PreciseTime::now();
[INFO] [stdout]    |               ^^^^^^^^^^^ use of undeclared type `PreciseTime`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 7 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 10)
[INFO] [stdout]     src/lib.rs - (line 35)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.20s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "e3af1af65b9a6238476925fae0f62623649a5067ec1dab520678e9e6b24ba7a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3af1af65b9a6238476925fae0f62623649a5067ec1dab520678e9e6b24ba7a1", kill_on_drop: false }`
[INFO] [stdout] e3af1af65b9a6238476925fae0f62623649a5067ec1dab520678e9e6b24ba7a1
