[INFO] fetching crate find_empty_block 0.1.0...
[INFO] testing find_empty_block-0.1.0 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate find_empty_block 0.1.0 into /workspace/builds/worker-28/source
[INFO] validating manifest of crates.io crate find_empty_block 0.1.0 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate find_empty_block 0.1.0
[INFO] finished tweaking crates.io crate find_empty_block 0.1.0
[INFO] tweaked toml for crates.io crate find_empty_block 0.1.0 written to /workspace/builds/worker-28/source/Cargo.toml
[INFO] crate crates.io crate find_empty_block 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded positioned-io v0.2.2
[INFO] [stderr]   Downloaded byteorder v0.5.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3e10d1d7c5b7fc64a42965d214e91ecd7a69acd14ec82477dbc3ac81a5bcb889
[INFO] running `Command { std: "docker" "start" "-a" "3e10d1d7c5b7fc64a42965d214e91ecd7a69acd14ec82477dbc3ac81a5bcb889", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3e10d1d7c5b7fc64a42965d214e91ecd7a69acd14ec82477dbc3ac81a5bcb889", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e10d1d7c5b7fc64a42965d214e91ecd7a69acd14ec82477dbc3ac81a5bcb889", kill_on_drop: false }`
[INFO] [stdout] 3e10d1d7c5b7fc64a42965d214e91ecd7a69acd14ec82477dbc3ac81a5bcb889
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1ec5722ae15e4c367749cd7f38ea38f5587be4586ac18a15f6eae54d57ef79dc
[INFO] running `Command { std: "docker" "start" "-a" "1ec5722ae15e4c367749cd7f38ea38f5587be4586ac18a15f6eae54d57ef79dc", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling byteorder v0.5.3
[INFO] [stderr]    Compiling crossbeam-deque v0.8.0
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling positioned-io v0.2.2
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling find_empty_block v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `rayon::prelude`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rayon::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes_read`
[INFO] [stdout]   --> src/main.rs:59:21
[INFO] [stdout]    |
[INFO] [stdout] 59 |                 let bytes_read = thread_file.read_at(thread_start_clone, &mut buf).unwrap();
[INFO] [stdout]    |                     ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes_read`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let mut last_window_size = SIZE % PARALLEL;
[INFO] [stdout]    |         ----^^^^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `DATA_PATH` should have a snake case name
[INFO] [stdout]  --> src/main.rs:9:13
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let mut DATA_PATH: String = String::new();
[INFO] [stdout]   |             ^^^^^^^^^ help: convert the identifier to snake case: `data_path`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `OFFSET` should have a snake case name
[INFO] [stdout]   --> src/main.rs:10:13
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let mut OFFSET: u64 = 0;
[INFO] [stdout]    |             ^^^^^^ help: convert the identifier to snake case: `offset`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `SIZE` should have a snake case name
[INFO] [stdout]   --> src/main.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut SIZE: u64 = 0;
[INFO] [stdout]    |             ^^^^ help: convert the identifier to snake case: `size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `PARALLEL` should have a snake case name
[INFO] [stdout]   --> src/main.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let mut PARALLEL: u64 = 2;
[INFO] [stdout]    |             ^^^^^^^^ help: convert the identifier to snake case: `parallel`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.58s
[INFO] running `Command { std: "docker" "inspect" "1ec5722ae15e4c367749cd7f38ea38f5587be4586ac18a15f6eae54d57ef79dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ec5722ae15e4c367749cd7f38ea38f5587be4586ac18a15f6eae54d57ef79dc", kill_on_drop: false }`
[INFO] [stdout] 1ec5722ae15e4c367749cd7f38ea38f5587be4586ac18a15f6eae54d57ef79dc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] da001a6b1d3fd35cc56926556602af3dac16a43b3bb8e14571d3bb12f9b411a3
[INFO] running `Command { std: "docker" "start" "-a" "da001a6b1d3fd35cc56926556602af3dac16a43b3bb8e14571d3bb12f9b411a3", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling find_empty_block v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `rayon::prelude`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rayon::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes_read`
[INFO] [stdout]   --> src/main.rs:59:21
[INFO] [stdout]    |
[INFO] [stdout] 59 |                 let bytes_read = thread_file.read_at(thread_start_clone, &mut buf).unwrap();
[INFO] [stdout]    |                     ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes_read`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let mut last_window_size = SIZE % PARALLEL;
[INFO] [stdout]    |         ----^^^^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `DATA_PATH` should have a snake case name
[INFO] [stdout]  --> src/main.rs:9:13
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let mut DATA_PATH: String = String::new();
[INFO] [stdout]   |             ^^^^^^^^^ help: convert the identifier to snake case: `data_path`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `OFFSET` should have a snake case name
[INFO] [stdout]   --> src/main.rs:10:13
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let mut OFFSET: u64 = 0;
[INFO] [stdout]    |             ^^^^^^ help: convert the identifier to snake case: `offset`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `SIZE` should have a snake case name
[INFO] [stdout]   --> src/main.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut SIZE: u64 = 0;
[INFO] [stdout]    |             ^^^^ help: convert the identifier to snake case: `size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `PARALLEL` should have a snake case name
[INFO] [stdout]   --> src/main.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let mut PARALLEL: u64 = 2;
[INFO] [stdout]    |             ^^^^^^^^ help: convert the identifier to snake case: `parallel`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `Command { std: "docker" "inspect" "da001a6b1d3fd35cc56926556602af3dac16a43b3bb8e14571d3bb12f9b411a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da001a6b1d3fd35cc56926556602af3dac16a43b3bb8e14571d3bb12f9b411a3", kill_on_drop: false }`
[INFO] [stdout] da001a6b1d3fd35cc56926556602af3dac16a43b3bb8e14571d3bb12f9b411a3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1ca9b3fb3086c4426e1b238940287ccc43a318a37b15d64ead03ffe6b43b0a2b
[INFO] running `Command { std: "docker" "start" "-a" "1ca9b3fb3086c4426e1b238940287ccc43a318a37b15d64ead03ffe6b43b0a2b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused import: `rayon::prelude`
[INFO] [stderr]  --> src/main.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use rayon::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `bytes_read`
[INFO] [stderr]   --> src/main.rs:59:21
[INFO] [stderr]    |
[INFO] [stderr] 59 |                 let bytes_read = thread_file.read_at(thread_start_clone, &mut buf).unwrap();
[INFO] [stderr]    |                     ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes_read`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:36:9
[INFO] [stderr]    |
[INFO] [stderr] 36 |     let mut last_window_size = SIZE % PARALLEL;
[INFO] [stderr]    |         ----^^^^^^^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `DATA_PATH` should have a snake case name
[INFO] [stderr]  --> src/main.rs:9:13
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let mut DATA_PATH: String = String::new();
[INFO] [stderr]   |             ^^^^^^^^^ help: convert the identifier to snake case: `data_path`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `OFFSET` should have a snake case name
[INFO] [stderr]   --> src/main.rs:10:13
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let mut OFFSET: u64 = 0;
[INFO] [stderr]    |             ^^^^^^ help: convert the identifier to snake case: `offset`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `SIZE` should have a snake case name
[INFO] [stderr]   --> src/main.rs:11:13
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let mut SIZE: u64 = 0;
[INFO] [stderr]    |             ^^^^ help: convert the identifier to snake case: `size`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `PARALLEL` should have a snake case name
[INFO] [stderr]   --> src/main.rs:12:13
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let mut PARALLEL: u64 = 2;
[INFO] [stderr]    |             ^^^^^^^^ help: convert the identifier to snake case: `parallel`
[INFO] [stderr] 
[INFO] [stderr] warning: `find_empty_block` (bin "find_empty_block" test) generated 7 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.49s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/find_empty_block-f12301ba16555eec)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1ca9b3fb3086c4426e1b238940287ccc43a318a37b15d64ead03ffe6b43b0a2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ca9b3fb3086c4426e1b238940287ccc43a318a37b15d64ead03ffe6b43b0a2b", kill_on_drop: false }`
[INFO] [stdout] 1ca9b3fb3086c4426e1b238940287ccc43a318a37b15d64ead03ffe6b43b0a2b
