[INFO] fetching crate wavelet-matrix 0.4.7...
[INFO] checking wavelet-matrix-0.4.7 against master#3aedcf06b73fc36feeebca3d579e1d2a6c40acc5 for pr-65819
[INFO] extracting crate wavelet-matrix 0.4.7 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate wavelet-matrix 0.4.7 on toolchain 3aedcf06b73fc36feeebca3d579e1d2a6c40acc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "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-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 763e9ffff7d9ee7f597109ac251f7b6cf390b568eec4c9e8a7c6832a04dce14c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "763e9ffff7d9ee7f597109ac251f7b6cf390b568eec4c9e8a7c6832a04dce14c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "763e9ffff7d9ee7f597109ac251f7b6cf390b568eec4c9e8a7c6832a04dce14c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "763e9ffff7d9ee7f597109ac251f7b6cf390b568eec4c9e8a7c6832a04dce14c", kill_on_drop: false }`
[INFO] [stdout] 763e9ffff7d9ee7f597109ac251f7b6cf390b568eec4c9e8a7c6832a04dce14c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] da6aa86b71b840fd11cd1d30a24b03d042a8782552be93d7e7f8bb67836d1fc9
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "da6aa86b71b840fd11cd1d30a24b03d042a8782552be93d7e7f8bb67836d1fc9", kill_on_drop: false }`
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking easybench v0.1.4
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking succinct v0.4.4
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking num-bigint 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: 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]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[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: function is never used: `statstical_helper`
[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 is never used: `sum_uniform_find_sufficient_k`
[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 is never used: `average`
[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 is never used: `error_pct`
[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 is never used: `statistical_performance`
[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 is never used: `statistical_sufficient_k`
[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 [unoptimized + debuginfo] target(s) in 10.15s
[INFO] running `Command { std: "docker" "inspect" "da6aa86b71b840fd11cd1d30a24b03d042a8782552be93d7e7f8bb67836d1fc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da6aa86b71b840fd11cd1d30a24b03d042a8782552be93d7e7f8bb67836d1fc9", kill_on_drop: false }`
[INFO] [stdout] da6aa86b71b840fd11cd1d30a24b03d042a8782552be93d7e7f8bb67836d1fc9