[INFO] fetching crate wavelet-matrix 0.4.7...
[INFO] checking wavelet-matrix-0.4.7 against master#158f00a1c5175648af6f6099b075f78d1d014a28 for pr-121251
[INFO] extracting crate wavelet-matrix 0.4.7 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate wavelet-matrix 0.4.7 on toolchain 158f00a1c5175648af6f6099b075f78d1d014a28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+158f00a1c5175648af6f6099b075f78d1d014a28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate wavelet-matrix 0.4.7
[INFO] finished tweaking crates.io crate wavelet-matrix 0.4.7
[INFO] tweaked toml for crates.io crate wavelet-matrix 0.4.7 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+158f00a1c5175648af6f6099b075f78d1d014a28" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+158f00a1c5175648af6f6099b075f78d1d014a28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded easybench v0.1.4
[INFO] [stderr]   Downloaded succinct v0.4.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+158f00a1c5175648af6f6099b075f78d1d014a28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ce40978a450344dc370382bbd7e183995ee0e408e7b57658b8ff6cdfd122ff56
[INFO] running `Command { std: "docker" "start" "-a" "ce40978a450344dc370382bbd7e183995ee0e408e7b57658b8ff6cdfd122ff56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ce40978a450344dc370382bbd7e183995ee0e408e7b57658b8ff6cdfd122ff56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce40978a450344dc370382bbd7e183995ee0e408e7b57658b8ff6cdfd122ff56", kill_on_drop: false }`
[INFO] [stdout] ce40978a450344dc370382bbd7e183995ee0e408e7b57658b8ff6cdfd122ff56
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+158f00a1c5175648af6f6099b075f78d1d014a28" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e283781a60b96025d5e82c5e410d940011586818080d2d692be7df679d1a73f8
[INFO] running `Command { std: "docker" "start" "-a" "e283781a60b96025d5e82c5e410d940011586818080d2d692be7df679d1a73f8", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]     Checking rustc-serialize v0.3.25
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking easybench v0.1.4
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking succinct v0.4.4
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking num-iter v0.1.44
[INFO] [stderr]     Checking wavelet-matrix v0.4.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> benches/easybench.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 49 |         let mut rng = rand::weak_rng();
[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: unused variable: `limit_secs`
[INFO] [stdout]   --> benches/easybench.rs:57:55
[INFO] [stdout]    |
[INFO] [stdout] 57 | fn overall_helper(num: usize, desc: &str, upper: u64, limit_secs: u64) {
[INFO] [stdout]    |                                                       ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_limit_secs`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `errorpct` is never read
[INFO] [stdout]    --> benches/easybench.rs:332:13
[INFO] [stdout]     |
[INFO] [stdout] 332 |     let mut errorpct = 0.0;
[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: function `statstical_helper` is never used
[INFO] [stdout]    --> benches/easybench.rs:264:4
[INFO] [stdout]     |
[INFO] [stdout] 264 | fn statstical_helper(num: usize, lower: u64, upper: u64, k: usize) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sum_uniform_find_sufficient_k` is never used
[INFO] [stdout]    --> benches/easybench.rs:330:4
[INFO] [stdout]     |
[INFO] [stdout] 330 | fn sum_uniform_find_sufficient_k(num: usize, lower: u64, upper: u64, accuracy_pct: f64) -> usize {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `average` is never used
[INFO] [stdout]    --> benches/easybench.rs:373:4
[INFO] [stdout]     |
[INFO] [stdout] 373 | fn average(r: &std::ops::Range<u64>) -> u64 {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `error_pct` is never used
[INFO] [stdout]    --> benches/easybench.rs:377:4
[INFO] [stdout]     |
[INFO] [stdout] 377 | fn error_pct(computed: u64, actual: u64) -> f64 {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `statistical_performance` is never used
[INFO] [stdout]    --> benches/easybench.rs:392:4
[INFO] [stdout]     |
[INFO] [stdout] 392 | fn statistical_performance() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `statistical_sufficient_k` is never used
[INFO] [stdout]    --> benches/easybench.rs:421:4
[INFO] [stdout]     |
[INFO] [stdout] 421 | fn statistical_sufficient_k() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.40s
[INFO] running `Command { std: "docker" "inspect" "e283781a60b96025d5e82c5e410d940011586818080d2d692be7df679d1a73f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e283781a60b96025d5e82c5e410d940011586818080d2d692be7df679d1a73f8", kill_on_drop: false }`
[INFO] [stdout] e283781a60b96025d5e82c5e410d940011586818080d2d692be7df679d1a73f8
