Nov 30 09:27:50.325 INFO checking Noah-Kennedy/rust_ack against try#32252761328f59ccfadb1bafb8148c685bc830b3 for pr-56323
Nov 30 09:27:50.325 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56323/worker-4/try#32252761328f59ccfadb1bafb8148c685bc830b3:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56323/try#32252761328f59ccfadb1bafb8148c685bc830b3:/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 +32252761328f59ccfadb1bafb8148c685bc830b3-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"`
Nov 30 09:27:50.785 INFO [stdout] 0a2a4fa0a221fb58eb4d1288446a795895d6013303321c5579e42cb932432cd6
Nov 30 09:27:50.787 INFO running `"docker" "start" "-a" "0a2a4fa0a221fb58eb4d1288446a795895d6013303321c5579e42cb932432cd6"`
Nov 30 09:27:52.020 INFO [stderr] usermod: no changes
Nov 30 09:27:52.092 INFO [stderr]     Checking rust_ack v0.1.0 (/source)
Nov 30 09:27:52.489 INFO [stderr] warning: unused import: `std::time::Instant`
Nov 30 09:27:52.489 INFO [stderr]  --> src/main.rs:1:5
Nov 30 09:27:52.489 INFO [stderr]   |
Nov 30 09:27:52.489 INFO [stderr] 1 | use std::time::Instant;
Nov 30 09:27:52.489 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Nov 30 09:27:52.489 INFO [stderr]   |
Nov 30 09:27:52.489 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 30 09:27:52.489 INFO [stderr] 
Nov 30 09:27:52.489 INFO [stderr] warning: unused import: `std::collections::HashMap`
Nov 30 09:27:52.489 INFO [stderr]  --> src/main.rs:2:5
Nov 30 09:27:52.489 INFO [stderr]   |
Nov 30 09:27:52.489 INFO [stderr] 2 | use std::collections::HashMap;
Nov 30 09:27:52.489 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 09:27:52.489 INFO [stderr] 
Nov 30 09:27:52.528 INFO [stderr] warning: unused variable: `i`
Nov 30 09:27:52.528 INFO [stderr]  --> src/ackermann_implementations/hyper_ack.rs:9:17
Nov 30 09:27:52.528 INFO [stderr]   |
Nov 30 09:27:52.528 INFO [stderr] 9 |             for i in 1..b {
Nov 30 09:27:52.528 INFO [stderr]   |                 ^ help: consider using `_i` instead
Nov 30 09:27:52.528 INFO [stderr]   |
Nov 30 09:27:52.528 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Nov 30 09:27:52.528 INFO [stderr] 
Nov 30 09:27:52.528 INFO [stderr] warning: unused variable: `sample_size`
Nov 30 09:27:52.528 INFO [stderr]  --> src/main.rs:8:9
Nov 30 09:27:52.528 INFO [stderr]   |
Nov 30 09:27:52.528 INFO [stderr] 8 |     let sample_size = 1000;
Nov 30 09:27:52.528 INFO [stderr]   |         ^^^^^^^^^^^ help: consider using `_sample_size` instead
Nov 30 09:27:52.528 INFO [stderr] 
Nov 30 09:27:52.528 INFO [stderr] warning: unused variable: `m`
Nov 30 09:27:52.528 INFO [stderr]  --> src/main.rs:9:9
Nov 30 09:27:52.528 INFO [stderr]   |
Nov 30 09:27:52.528 INFO [stderr] 9 |     let m = 3;
Nov 30 09:27:52.528 INFO [stderr]   |         ^ help: consider using `_m` instead
Nov 30 09:27:52.528 INFO [stderr] 
Nov 30 09:27:52.528 INFO [stderr] warning: unused variable: `n`
Nov 30 09:27:52.528 INFO [stderr]   --> src/main.rs:10:9
Nov 30 09:27:52.528 INFO [stderr]    |
Nov 30 09:27:52.528 INFO [stderr] 10 |     let n = 8;
Nov 30 09:27:52.528 INFO [stderr]    |         ^ help: consider using `_n` instead
Nov 30 09:27:52.528 INFO [stderr] 
Nov 30 09:27:52.532 INFO [stderr] warning: unused variable: `printing`
Nov 30 09:27:52.532 INFO [stderr]   --> src/main.rs:11:9
Nov 30 09:27:52.532 INFO [stderr]    |
Nov 30 09:27:52.532 INFO [stderr] 11 |     let printing = false;
Nov 30 09:27:52.532 INFO [stderr]    |         ^^^^^^^^ help: consider using `_printing` instead
Nov 30 09:27:52.532 INFO [stderr] 
Nov 30 09:27:52.539 INFO [stderr] warning: function is never used: `benchmark_ack`
Nov 30 09:27:52.539 INFO [stderr]   --> src/benchmarking/mod.rs:3:1
Nov 30 09:27:52.540 INFO [stderr]    |
Nov 30 09:27:52.540 INFO [stderr] 3  | / pub fn benchmark_ack(fun: fn(u64, u64) -> u64, name: &str, sample_size: u64, m: u64, n: u64,
Nov 30 09:27:52.540 INFO [stderr] 4  | |                  printing: bool) {
Nov 30 09:27:52.540 INFO [stderr] 5  | |     let mut total: f64 = 0.0;
Nov 30 09:27:52.540 INFO [stderr] 6  | |     for i in 0..sample_size {
Nov 30 09:27:52.540 INFO [stderr] ...  |
Nov 30 09:27:52.540 INFO [stderr] 29 | |     println!("{}({}, {}):\nSample Size:\t{}\nAverage Time:\t{}", name, m, n, sample_size, average);
Nov 30 09:27:52.540 INFO [stderr] 30 | | }
Nov 30 09:27:52.540 INFO [stderr]    | |_^
Nov 30 09:27:52.540 INFO [stderr]    |
Nov 30 09:27:52.540 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 30 09:27:52.540 INFO [stderr] 
Nov 30 09:27:52.541 INFO [stderr] warning: function is never used: `basic_ack`
Nov 30 09:27:52.541 INFO [stderr]  --> src/ackermann_implementations/basic_ack.rs:1:1
Nov 30 09:27:52.541 INFO [stderr]   |
Nov 30 09:27:52.541 INFO [stderr] 1 | pub fn basic_ack(m: u64, n: u64) -> u64 {
Nov 30 09:27:52.541 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 09:27:52.541 INFO [stderr] 
Nov 30 09:27:52.782 INFO [stderr] warning: unused import: `std::time::Instant`
Nov 30 09:27:52.782 INFO [stderr]  --> src/main.rs:1:5
Nov 30 09:27:52.782 INFO [stderr]   |
Nov 30 09:27:52.782 INFO [stderr] 1 | use std::time::Instant;
Nov 30 09:27:52.782 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Nov 30 09:27:52.782 INFO [stderr]   |
Nov 30 09:27:52.782 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 30 09:27:52.782 INFO [stderr] 
Nov 30 09:27:52.782 INFO [stderr] warning: unused import: `std::collections::HashMap`
Nov 30 09:27:52.782 INFO [stderr]  --> src/main.rs:2:5
Nov 30 09:27:52.782 INFO [stderr]   |
Nov 30 09:27:52.782 INFO [stderr] 2 | use std::collections::HashMap;
Nov 30 09:27:52.782 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 09:27:52.782 INFO [stderr] 
Nov 30 09:27:52.902 INFO [stderr] warning: unused variable: `i`
Nov 30 09:27:52.902 INFO [stderr]  --> src/ackermann_implementations/hyper_ack.rs:9:17
Nov 30 09:27:52.902 INFO [stderr]   |
Nov 30 09:27:52.902 INFO [stderr] 9 |             for i in 1..b {
Nov 30 09:27:52.902 INFO [stderr]   |                 ^ help: consider using `_i` instead
Nov 30 09:27:52.902 INFO [stderr]   |
Nov 30 09:27:52.902 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Nov 30 09:27:52.902 INFO [stderr] 
Nov 30 09:27:52.902 INFO [stderr] warning: unused variable: `sample_size`
Nov 30 09:27:52.902 INFO [stderr]  --> src/main.rs:8:9
Nov 30 09:27:52.902 INFO [stderr]   |
Nov 30 09:27:52.902 INFO [stderr] 8 |     let sample_size = 1000;
Nov 30 09:27:52.902 INFO [stderr]   |         ^^^^^^^^^^^ help: consider using `_sample_size` instead
Nov 30 09:27:52.902 INFO [stderr] 
Nov 30 09:27:52.902 INFO [stderr] warning: unused variable: `m`
Nov 30 09:27:52.902 INFO [stderr]  --> src/main.rs:9:9
Nov 30 09:27:52.902 INFO [stderr]   |
Nov 30 09:27:52.902 INFO [stderr] 9 |     let m = 3;
Nov 30 09:27:52.902 INFO [stderr]   |         ^ help: consider using `_m` instead
Nov 30 09:27:52.902 INFO [stderr] 
Nov 30 09:27:52.902 INFO [stderr] warning: unused variable: `n`
Nov 30 09:27:52.902 INFO [stderr]   --> src/main.rs:10:9
Nov 30 09:27:52.902 INFO [stderr]    |
Nov 30 09:27:52.902 INFO [stderr] 10 |     let n = 8;
Nov 30 09:27:52.902 INFO [stderr]    |         ^ help: consider using `_n` instead
Nov 30 09:27:52.902 INFO [stderr] 
Nov 30 09:27:52.903 INFO [stderr] warning: unused variable: `printing`
Nov 30 09:27:52.903 INFO [stderr]   --> src/main.rs:11:9
Nov 30 09:27:52.903 INFO [stderr]    |
Nov 30 09:27:52.903 INFO [stderr] 11 |     let printing = false;
Nov 30 09:27:52.903 INFO [stderr]    |         ^^^^^^^^ help: consider using `_printing` instead
Nov 30 09:27:52.903 INFO [stderr] 
Nov 30 09:27:52.945 INFO [stderr] warning: function is never used: `benchmark_ack`
Nov 30 09:27:52.946 INFO [stderr]   --> src/benchmarking/mod.rs:3:1
Nov 30 09:27:52.946 INFO [stderr]    |
Nov 30 09:27:52.946 INFO [stderr] 3  | / pub fn benchmark_ack(fun: fn(u64, u64) -> u64, name: &str, sample_size: u64, m: u64, n: u64,
Nov 30 09:27:52.946 INFO [stderr] 4  | |                  printing: bool) {
Nov 30 09:27:52.946 INFO [stderr] 5  | |     let mut total: f64 = 0.0;
Nov 30 09:27:52.946 INFO [stderr] 6  | |     for i in 0..sample_size {
Nov 30 09:27:52.946 INFO [stderr] ...  |
Nov 30 09:27:52.946 INFO [stderr] 29 | |     println!("{}({}, {}):\nSample Size:\t{}\nAverage Time:\t{}", name, m, n, sample_size, average);
Nov 30 09:27:52.947 INFO [stderr] 30 | | }
Nov 30 09:27:52.947 INFO [stderr]    | |_^
Nov 30 09:27:52.947 INFO [stderr]    |
Nov 30 09:27:52.947 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 30 09:27:52.947 INFO [stderr] 
Nov 30 09:27:52.947 INFO [stderr] warning: function is never used: `basic_ack`
Nov 30 09:27:52.947 INFO [stderr]  --> src/ackermann_implementations/basic_ack.rs:1:1
Nov 30 09:27:52.947 INFO [stderr]   |
Nov 30 09:27:52.947 INFO [stderr] 1 | pub fn basic_ack(m: u64, n: u64) -> u64 {
Nov 30 09:27:52.947 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 09:27:52.947 INFO [stderr] 
Nov 30 09:27:52.963 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.90s
Nov 30 09:27:52.972 INFO [stderr] su: No module specific data is present
Nov 30 09:27:53.412 INFO running `"docker" "inspect" "0a2a4fa0a221fb58eb4d1288446a795895d6013303321c5579e42cb932432cd6"`
Nov 30 09:27:53.546 INFO running `"docker" "rm" "-f" "0a2a4fa0a221fb58eb4d1288446a795895d6013303321c5579e42cb932432cd6"`
Nov 30 09:27:53.719 INFO [stdout] 0a2a4fa0a221fb58eb4d1288446a795895d6013303321c5579e42cb932432cd6