Dec 18 06:12:38.642 INFO checking Noah-Kennedy/rust_ack against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 06:12:38.642 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-4/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/Noah-Kennedy/rust_ack:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 06:12:39.121 INFO [stdout] c14d8aff83ed8c4c43fd9c26ef74aa30d3c8f0bf9b4ca854febc0f563dbf61dd
Dec 18 06:12:39.128 INFO running `"docker" "start" "-a" "c14d8aff83ed8c4c43fd9c26ef74aa30d3c8f0bf9b4ca854febc0f563dbf61dd"`
Dec 18 06:12:40.669 INFO [stderr]     Checking rust_ack v0.1.0 (/opt/crater/workdir)
Dec 18 06:12:41.051 INFO [stderr] warning: unused import: `std::time::Instant`
Dec 18 06:12:41.051 INFO [stderr]  --> src/main.rs:1:5
Dec 18 06:12:41.051 INFO [stderr]   |
Dec 18 06:12:41.051 INFO [stderr] 1 | use std::time::Instant;
Dec 18 06:12:41.051 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Dec 18 06:12:41.051 INFO [stderr]   |
Dec 18 06:12:41.051 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 06:12:41.051 INFO [stderr] 
Dec 18 06:12:41.051 INFO [stderr] warning: unused import: `std::collections::HashMap`
Dec 18 06:12:41.051 INFO [stderr]  --> src/main.rs:2:5
Dec 18 06:12:41.051 INFO [stderr]   |
Dec 18 06:12:41.051 INFO [stderr] 2 | use std::collections::HashMap;
Dec 18 06:12:41.051 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:12:41.051 INFO [stderr] 
Dec 18 06:12:41.080 INFO [stderr] warning: unused import: `std::time::Instant`
Dec 18 06:12:41.080 INFO [stderr]  --> src/main.rs:1:5
Dec 18 06:12:41.080 INFO [stderr]   |
Dec 18 06:12:41.080 INFO [stderr] 1 | use std::time::Instant;
Dec 18 06:12:41.080 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Dec 18 06:12:41.080 INFO [stderr]   |
Dec 18 06:12:41.080 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 06:12:41.080 INFO [stderr] 
Dec 18 06:12:41.080 INFO [stderr] warning: unused import: `std::collections::HashMap`
Dec 18 06:12:41.080 INFO [stderr]  --> src/main.rs:2:5
Dec 18 06:12:41.080 INFO [stderr]   |
Dec 18 06:12:41.080 INFO [stderr] 2 | use std::collections::HashMap;
Dec 18 06:12:41.080 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:12:41.096 INFO [stderr] 
Dec 18 06:12:41.100 INFO [stderr] warning: unused variable: `i`
Dec 18 06:12:41.100 INFO [stderr]  --> src/ackermann_implementations/hyper_ack.rs:9:17
Dec 18 06:12:41.100 INFO [stderr]   |
Dec 18 06:12:41.100 INFO [stderr] 9 |             for i in 1..b {
Dec 18 06:12:41.100 INFO [stderr]   |                 ^ help: consider using `_i` instead
Dec 18 06:12:41.100 INFO [stderr]   |
Dec 18 06:12:41.100 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 18 06:12:41.100 INFO [stderr] 
Dec 18 06:12:41.100 INFO [stderr] warning: unused variable: `sample_size`
Dec 18 06:12:41.100 INFO [stderr]  --> src/main.rs:8:9
Dec 18 06:12:41.100 INFO [stderr]   |
Dec 18 06:12:41.100 INFO [stderr] 8 |     let sample_size = 1000;
Dec 18 06:12:41.100 INFO [stderr]   |         ^^^^^^^^^^^ help: consider using `_sample_size` instead
Dec 18 06:12:41.100 INFO [stderr] 
Dec 18 06:12:41.100 INFO [stderr] warning: unused variable: `m`
Dec 18 06:12:41.100 INFO [stderr]  --> src/main.rs:9:9
Dec 18 06:12:41.100 INFO [stderr]   |
Dec 18 06:12:41.100 INFO [stderr] 9 |     let m = 3;
Dec 18 06:12:41.100 INFO [stderr]   |         ^ help: consider using `_m` instead
Dec 18 06:12:41.100 INFO [stderr] 
Dec 18 06:12:41.100 INFO [stderr] warning: unused variable: `n`
Dec 18 06:12:41.100 INFO [stderr]   --> src/main.rs:10:9
Dec 18 06:12:41.100 INFO [stderr]    |
Dec 18 06:12:41.100 INFO [stderr] 10 |     let n = 8;
Dec 18 06:12:41.100 INFO [stderr]    |         ^ help: consider using `_n` instead
Dec 18 06:12:41.108 INFO [stderr] 
Dec 18 06:12:41.108 INFO [stderr] warning: unused variable: `printing`
Dec 18 06:12:41.108 INFO [stderr]   --> src/main.rs:11:9
Dec 18 06:12:41.108 INFO [stderr]    |
Dec 18 06:12:41.108 INFO [stderr] 11 |     let printing = false;
Dec 18 06:12:41.108 INFO [stderr]    |         ^^^^^^^^ help: consider using `_printing` instead
Dec 18 06:12:41.108 INFO [stderr] 
Dec 18 06:12:41.116 INFO [stderr] warning: function is never used: `benchmark_ack`
Dec 18 06:12:41.116 INFO [stderr]   --> src/benchmarking/mod.rs:3:1
Dec 18 06:12:41.116 INFO [stderr]    |
Dec 18 06:12:41.116 INFO [stderr] 3  | / pub fn benchmark_ack(fun: fn(u64, u64) -> u64, name: &str, sample_size: u64, m: u64, n: u64,
Dec 18 06:12:41.116 INFO [stderr] 4  | |                  printing: bool) {
Dec 18 06:12:41.116 INFO [stderr] 5  | |     let mut total: f64 = 0.0;
Dec 18 06:12:41.116 INFO [stderr] 6  | |     for i in 0..sample_size {
Dec 18 06:12:41.116 INFO [stderr] ...  |
Dec 18 06:12:41.116 INFO [stderr] 29 | |     println!("{}({}, {}):\nSample Size:\t{}\nAverage Time:\t{}", name, m, n, sample_size, average);
Dec 18 06:12:41.116 INFO [stderr] 30 | | }
Dec 18 06:12:41.116 INFO [stderr]    | |_^
Dec 18 06:12:41.116 INFO [stderr]    |
Dec 18 06:12:41.116 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 06:12:41.116 INFO [stderr] 
Dec 18 06:12:41.116 INFO [stderr] warning: function is never used: `basic_ack`
Dec 18 06:12:41.116 INFO [stderr]  --> src/ackermann_implementations/basic_ack.rs:1:1
Dec 18 06:12:41.116 INFO [stderr]   |
Dec 18 06:12:41.116 INFO [stderr] 1 | pub fn basic_ack(m: u64, n: u64) -> u64 {
Dec 18 06:12:41.116 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:12:41.116 INFO [stderr] 
Dec 18 06:12:41.324 INFO [stderr] warning: unused variable: `i`
Dec 18 06:12:41.324 INFO [stderr]  --> src/ackermann_implementations/hyper_ack.rs:9:17
Dec 18 06:12:41.324 INFO [stderr]   |
Dec 18 06:12:41.324 INFO [stderr] 9 |             for i in 1..b {
Dec 18 06:12:41.324 INFO [stderr]   |                 ^ help: consider using `_i` instead
Dec 18 06:12:41.324 INFO [stderr]   |
Dec 18 06:12:41.324 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 18 06:12:41.324 INFO [stderr] 
Dec 18 06:12:41.324 INFO [stderr] warning: unused variable: `sample_size`
Dec 18 06:12:41.324 INFO [stderr]  --> src/main.rs:8:9
Dec 18 06:12:41.324 INFO [stderr]   |
Dec 18 06:12:41.324 INFO [stderr] 8 |     let sample_size = 1000;
Dec 18 06:12:41.324 INFO [stderr]   |         ^^^^^^^^^^^ help: consider using `_sample_size` instead
Dec 18 06:12:41.324 INFO [stderr] 
Dec 18 06:12:41.324 INFO [stderr] warning: unused variable: `m`
Dec 18 06:12:41.324 INFO [stderr]  --> src/main.rs:9:9
Dec 18 06:12:41.324 INFO [stderr]   |
Dec 18 06:12:41.324 INFO [stderr] 9 |     let m = 3;
Dec 18 06:12:41.324 INFO [stderr]   |         ^ help: consider using `_m` instead
Dec 18 06:12:41.324 INFO [stderr] 
Dec 18 06:12:41.324 INFO [stderr] warning: unused variable: `n`
Dec 18 06:12:41.324 INFO [stderr]   --> src/main.rs:10:9
Dec 18 06:12:41.325 INFO [stderr]    |
Dec 18 06:12:41.325 INFO [stderr] 10 |     let n = 8;
Dec 18 06:12:41.325 INFO [stderr]    |         ^ help: consider using `_n` instead
Dec 18 06:12:41.325 INFO [stderr] 
Dec 18 06:12:41.325 INFO [stderr] warning: unused variable: `printing`
Dec 18 06:12:41.325 INFO [stderr]   --> src/main.rs:11:9
Dec 18 06:12:41.325 INFO [stderr]    |
Dec 18 06:12:41.325 INFO [stderr] 11 |     let printing = false;
Dec 18 06:12:41.325 INFO [stderr]    |         ^^^^^^^^ help: consider using `_printing` instead
Dec 18 06:12:41.325 INFO [stderr] 
Dec 18 06:12:41.376 INFO [stderr] warning: function is never used: `benchmark_ack`
Dec 18 06:12:41.376 INFO [stderr]   --> src/benchmarking/mod.rs:3:1
Dec 18 06:12:41.376 INFO [stderr]    |
Dec 18 06:12:41.376 INFO [stderr] 3  | / pub fn benchmark_ack(fun: fn(u64, u64) -> u64, name: &str, sample_size: u64, m: u64, n: u64,
Dec 18 06:12:41.376 INFO [stderr] 4  | |                  printing: bool) {
Dec 18 06:12:41.376 INFO [stderr] 5  | |     let mut total: f64 = 0.0;
Dec 18 06:12:41.376 INFO [stderr] 6  | |     for i in 0..sample_size {
Dec 18 06:12:41.376 INFO [stderr] ...  |
Dec 18 06:12:41.376 INFO [stderr] 29 | |     println!("{}({}, {}):\nSample Size:\t{}\nAverage Time:\t{}", name, m, n, sample_size, average);
Dec 18 06:12:41.376 INFO [stderr] 30 | | }
Dec 18 06:12:41.376 INFO [stderr]    | |_^
Dec 18 06:12:41.376 INFO [stderr]    |
Dec 18 06:12:41.376 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 06:12:41.376 INFO [stderr] 
Dec 18 06:12:41.376 INFO [stderr] warning: function is never used: `basic_ack`
Dec 18 06:12:41.376 INFO [stderr]  --> src/ackermann_implementations/basic_ack.rs:1:1
Dec 18 06:12:41.376 INFO [stderr]   |
Dec 18 06:12:41.376 INFO [stderr] 1 | pub fn basic_ack(m: u64, n: u64) -> u64 {
Dec 18 06:12:41.376 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 06:12:41.376 INFO [stderr] 
Dec 18 06:12:41.417 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.79s
Dec 18 06:12:42.503 INFO running `"docker" "inspect" "c14d8aff83ed8c4c43fd9c26ef74aa30d3c8f0bf9b4ca854febc0f563dbf61dd"`
Dec 18 06:12:42.722 INFO running `"docker" "rm" "-f" "c14d8aff83ed8c4c43fd9c26ef74aa30d3c8f0bf9b4ca854febc0f563dbf61dd"`
Dec 18 06:12:43.044 INFO [stdout] c14d8aff83ed8c4c43fd9c26ef74aa30d3c8f0bf9b4ca854febc0f563dbf61dd