Dec 12 01:11:08.467 INFO checking Noah-Kennedy/rust_ack against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 01:11:08.467 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-5/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +3a75e80557a103497cffbcab395a2f37061a77ea-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 12 01:11:08.712 INFO [stdout] 52e6775eae71d54f2dc1c1f4d093c4cd23d022b4adb20f66f16422346e3cc71e
Dec 12 01:11:08.718 INFO running `"docker" "start" "-a" "52e6775eae71d54f2dc1c1f4d093c4cd23d022b4adb20f66f16422346e3cc71e"`
Dec 12 01:11:09.512 INFO [stderr] usermod: no changes
Dec 12 01:11:09.564 INFO [stderr]     Checking rust_ack v0.1.0 (/source)
Dec 12 01:11:10.233 INFO [stderr] warning: unused import: `std::time::Instant`
Dec 12 01:11:10.233 INFO [stderr]  --> src/main.rs:1:5
Dec 12 01:11:10.233 INFO [stderr]   |
Dec 12 01:11:10.233 INFO [stderr] 1 | use std::time::Instant;
Dec 12 01:11:10.233 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Dec 12 01:11:10.233 INFO [stderr]   |
Dec 12 01:11:10.233 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 01:11:10.233 INFO [stderr] 
Dec 12 01:11:10.233 INFO [stderr] warning: unused import: `std::collections::HashMap`
Dec 12 01:11:10.234 INFO [stderr]  --> src/main.rs:2:5
Dec 12 01:11:10.234 INFO [stderr]   |
Dec 12 01:11:10.234 INFO [stderr] 2 | use std::collections::HashMap;
Dec 12 01:11:10.234 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 01:11:10.234 INFO [stderr] 
Dec 12 01:11:10.256 INFO [stderr] warning: unused import: `std::time::Instant`
Dec 12 01:11:10.256 INFO [stderr]  --> src/main.rs:1:5
Dec 12 01:11:10.256 INFO [stderr]   |
Dec 12 01:11:10.256 INFO [stderr] 1 | use std::time::Instant;
Dec 12 01:11:10.256 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Dec 12 01:11:10.256 INFO [stderr]   |
Dec 12 01:11:10.256 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 01:11:10.256 INFO [stderr] 
Dec 12 01:11:10.256 INFO [stderr] warning: unused import: `std::collections::HashMap`
Dec 12 01:11:10.256 INFO [stderr]  --> src/main.rs:2:5
Dec 12 01:11:10.256 INFO [stderr]   |
Dec 12 01:11:10.256 INFO [stderr] 2 | use std::collections::HashMap;
Dec 12 01:11:10.256 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 01:11:10.256 INFO [stderr] 
Dec 12 01:11:10.276 INFO [stderr] warning: unused variable: `i`
Dec 12 01:11:10.276 INFO [stderr]  --> src/ackermann_implementations/hyper_ack.rs:9:17
Dec 12 01:11:10.276 INFO [stderr]   |
Dec 12 01:11:10.276 INFO [stderr] 9 |             for i in 1..b {
Dec 12 01:11:10.276 INFO [stderr]   |                 ^ help: consider using `_i` instead
Dec 12 01:11:10.276 INFO [stderr]   |
Dec 12 01:11:10.276 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 12 01:11:10.276 INFO [stderr] 
Dec 12 01:11:10.277 INFO [stderr] warning: unused variable: `sample_size`
Dec 12 01:11:10.277 INFO [stderr]  --> src/main.rs:8:9
Dec 12 01:11:10.277 INFO [stderr]   |
Dec 12 01:11:10.277 INFO [stderr] 8 |     let sample_size = 1000;
Dec 12 01:11:10.277 INFO [stderr]   |         ^^^^^^^^^^^ help: consider using `_sample_size` instead
Dec 12 01:11:10.277 INFO [stderr] 
Dec 12 01:11:10.277 INFO [stderr] warning: unused variable: `m`
Dec 12 01:11:10.277 INFO [stderr]  --> src/main.rs:9:9
Dec 12 01:11:10.277 INFO [stderr]   |
Dec 12 01:11:10.277 INFO [stderr] 9 |     let m = 3;
Dec 12 01:11:10.277 INFO [stderr]   |         ^ help: consider using `_m` instead
Dec 12 01:11:10.277 INFO [stderr] 
Dec 12 01:11:10.277 INFO [stderr] warning: unused variable: `n`
Dec 12 01:11:10.277 INFO [stderr]   --> src/main.rs:10:9
Dec 12 01:11:10.277 INFO [stderr]    |
Dec 12 01:11:10.277 INFO [stderr] 10 |     let n = 8;
Dec 12 01:11:10.277 INFO [stderr]    |         ^ help: consider using `_n` instead
Dec 12 01:11:10.277 INFO [stderr] 
Dec 12 01:11:10.277 INFO [stderr] warning: unused variable: `printing`
Dec 12 01:11:10.277 INFO [stderr]   --> src/main.rs:11:9
Dec 12 01:11:10.277 INFO [stderr]    |
Dec 12 01:11:10.277 INFO [stderr] 11 |     let printing = false;
Dec 12 01:11:10.277 INFO [stderr]    |         ^^^^^^^^ help: consider using `_printing` instead
Dec 12 01:11:10.277 INFO [stderr] 
Dec 12 01:11:10.280 INFO [stderr] warning: function is never used: `benchmark_ack`
Dec 12 01:11:10.280 INFO [stderr]   --> src/benchmarking/mod.rs:3:1
Dec 12 01:11:10.280 INFO [stderr]    |
Dec 12 01:11:10.280 INFO [stderr] 3  | / pub fn benchmark_ack(fun: fn(u64, u64) -> u64, name: &str, sample_size: u64, m: u64, n: u64,
Dec 12 01:11:10.280 INFO [stderr] 4  | |                  printing: bool) {
Dec 12 01:11:10.280 INFO [stderr] 5  | |     let mut total: f64 = 0.0;
Dec 12 01:11:10.280 INFO [stderr] 6  | |     for i in 0..sample_size {
Dec 12 01:11:10.280 INFO [stderr] ...  |
Dec 12 01:11:10.280 INFO [stderr] 29 | |     println!("{}({}, {}):\nSample Size:\t{}\nAverage Time:\t{}", name, m, n, sample_size, average);
Dec 12 01:11:10.280 INFO [stderr] 30 | | }
Dec 12 01:11:10.280 INFO [stderr]    | |_^
Dec 12 01:11:10.280 INFO [stderr]    |
Dec 12 01:11:10.280 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 12 01:11:10.280 INFO [stderr] 
Dec 12 01:11:10.280 INFO [stderr] warning: function is never used: `basic_ack`
Dec 12 01:11:10.280 INFO [stderr]  --> src/ackermann_implementations/basic_ack.rs:1:1
Dec 12 01:11:10.280 INFO [stderr]   |
Dec 12 01:11:10.280 INFO [stderr] 1 | pub fn basic_ack(m: u64, n: u64) -> u64 {
Dec 12 01:11:10.280 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 01:11:10.280 INFO [stderr] 
Dec 12 01:11:10.384 INFO [stderr] warning: unused variable: `i`
Dec 12 01:11:10.384 INFO [stderr]  --> src/ackermann_implementations/hyper_ack.rs:9:17
Dec 12 01:11:10.384 INFO [stderr]   |
Dec 12 01:11:10.384 INFO [stderr] 9 |             for i in 1..b {
Dec 12 01:11:10.384 INFO [stderr]   |                 ^ help: consider using `_i` instead
Dec 12 01:11:10.384 INFO [stderr]   |
Dec 12 01:11:10.384 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 12 01:11:10.384 INFO [stderr] 
Dec 12 01:11:10.388 INFO [stderr] warning: unused variable: `sample_size`
Dec 12 01:11:10.388 INFO [stderr]  --> src/main.rs:8:9
Dec 12 01:11:10.388 INFO [stderr]   |
Dec 12 01:11:10.388 INFO [stderr] 8 |     let sample_size = 1000;
Dec 12 01:11:10.388 INFO [stderr]   |         ^^^^^^^^^^^ help: consider using `_sample_size` instead
Dec 12 01:11:10.388 INFO [stderr] 
Dec 12 01:11:10.388 INFO [stderr] warning: unused variable: `m`
Dec 12 01:11:10.388 INFO [stderr]  --> src/main.rs:9:9
Dec 12 01:11:10.388 INFO [stderr]   |
Dec 12 01:11:10.388 INFO [stderr] 9 |     let m = 3;
Dec 12 01:11:10.388 INFO [stderr]   |         ^ help: consider using `_m` instead
Dec 12 01:11:10.388 INFO [stderr] 
Dec 12 01:11:10.388 INFO [stderr] warning: unused variable: `n`
Dec 12 01:11:10.388 INFO [stderr]   --> src/main.rs:10:9
Dec 12 01:11:10.388 INFO [stderr]    |
Dec 12 01:11:10.388 INFO [stderr] 10 |     let n = 8;
Dec 12 01:11:10.388 INFO [stderr]    |         ^ help: consider using `_n` instead
Dec 12 01:11:10.389 INFO [stderr] 
Dec 12 01:11:10.389 INFO [stderr] warning: unused variable: `printing`
Dec 12 01:11:10.389 INFO [stderr]   --> src/main.rs:11:9
Dec 12 01:11:10.389 INFO [stderr]    |
Dec 12 01:11:10.389 INFO [stderr] 11 |     let printing = false;
Dec 12 01:11:10.389 INFO [stderr]    |         ^^^^^^^^ help: consider using `_printing` instead
Dec 12 01:11:10.389 INFO [stderr] 
Dec 12 01:11:10.429 INFO [stderr] warning: function is never used: `benchmark_ack`
Dec 12 01:11:10.429 INFO [stderr]   --> src/benchmarking/mod.rs:3:1
Dec 12 01:11:10.429 INFO [stderr]    |
Dec 12 01:11:10.429 INFO [stderr] 3  | / pub fn benchmark_ack(fun: fn(u64, u64) -> u64, name: &str, sample_size: u64, m: u64, n: u64,
Dec 12 01:11:10.429 INFO [stderr] 4  | |                  printing: bool) {
Dec 12 01:11:10.429 INFO [stderr] 5  | |     let mut total: f64 = 0.0;
Dec 12 01:11:10.429 INFO [stderr] 6  | |     for i in 0..sample_size {
Dec 12 01:11:10.429 INFO [stderr] ...  |
Dec 12 01:11:10.429 INFO [stderr] 29 | |     println!("{}({}, {}):\nSample Size:\t{}\nAverage Time:\t{}", name, m, n, sample_size, average);
Dec 12 01:11:10.429 INFO [stderr] 30 | | }
Dec 12 01:11:10.429 INFO [stderr]    | |_^
Dec 12 01:11:10.429 INFO [stderr]    |
Dec 12 01:11:10.429 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 12 01:11:10.429 INFO [stderr] 
Dec 12 01:11:10.429 INFO [stderr] warning: function is never used: `basic_ack`
Dec 12 01:11:10.429 INFO [stderr]  --> src/ackermann_implementations/basic_ack.rs:1:1
Dec 12 01:11:10.429 INFO [stderr]   |
Dec 12 01:11:10.429 INFO [stderr] 1 | pub fn basic_ack(m: u64, n: u64) -> u64 {
Dec 12 01:11:10.429 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 01:11:10.429 INFO [stderr] 
Dec 12 01:11:10.448 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.90s
Dec 12 01:11:10.450 INFO [stderr] su: No module specific data is present
Dec 12 01:11:10.964 INFO running `"docker" "inspect" "52e6775eae71d54f2dc1c1f4d093c4cd23d022b4adb20f66f16422346e3cc71e"`
Dec 12 01:11:11.166 INFO running `"docker" "rm" "-f" "52e6775eae71d54f2dc1c1f4d093c4cd23d022b4adb20f66f16422346e3cc71e"`
Dec 12 01:11:11.283 INFO [stdout] 52e6775eae71d54f2dc1c1f4d093c4cd23d022b4adb20f66f16422346e3cc71e