Dec 04 16:09:16.082 INFO checking k-masatany/rust_self_study against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 16:09:16.082 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-1/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-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 04 16:09:16.426 INFO [stdout] 6c2bfbf36919373dfebbd768f0056d6b7e5ec7aa9f840acc5cb43726d0056998
Dec 04 16:09:16.435 INFO running `"docker" "start" "-a" "6c2bfbf36919373dfebbd768f0056d6b7e5ec7aa9f840acc5cb43726d0056998"`
Dec 04 16:09:17.630 INFO [stderr] usermod: no changes
Dec 04 16:09:17.671 INFO [stderr]     Checking rust_self_study v0.1.0 (/source)
Dec 04 16:09:18.071 INFO [stderr] warning: unused variable: `n`
Dec 04 16:09:18.071 INFO [stderr]  --> src/main.rs:7:9
Dec 04 16:09:18.071 INFO [stderr]   |
Dec 04 16:09:18.071 INFO [stderr] 7 |     let n = buffer.trim().parse::<u64>().unwrap();
Dec 04 16:09:18.071 INFO [stderr]   |         ^ help: consider using `_n` instead
Dec 04 16:09:18.071 INFO [stderr]   |
Dec 04 16:09:18.071 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 04 16:09:18.071 INFO [stderr] 
Dec 04 16:09:18.083 INFO [stderr] warning: function is never used: `multiples_of_3_and_5`
Dec 04 16:09:18.083 INFO [stderr]  --> src/problems/prob1.rs:1:1
Dec 04 16:09:18.083 INFO [stderr]   |
Dec 04 16:09:18.083 INFO [stderr] 1 | pub fn multiples_of_3_and_5(n: u32) -> u64{
Dec 04 16:09:18.083 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 16:09:18.083 INFO [stderr]   |
Dec 04 16:09:18.083 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 04 16:09:18.083 INFO [stderr] 
Dec 04 16:09:18.083 INFO [stderr] warning: function is never used: `tail_multiples_of_3_and_5`
Dec 04 16:09:18.083 INFO [stderr]  --> src/problems/prob1.rs:5:1
Dec 04 16:09:18.083 INFO [stderr]   |
Dec 04 16:09:18.083 INFO [stderr] 5 | fn tail_multiples_of_3_and_5(n: u32, att: u64) -> u64 {
Dec 04 16:09:18.083 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 16:09:18.083 INFO [stderr] 
Dec 04 16:09:18.083 INFO [stderr] warning: function is never used: `even_fibonacci_numbers`
Dec 04 16:09:18.083 INFO [stderr]  --> src/problems/prob2.rs:1:1
Dec 04 16:09:18.083 INFO [stderr]   |
Dec 04 16:09:18.083 INFO [stderr] 1 | pub fn even_fibonacci_numbers(lim: u64) -> u64 {
Dec 04 16:09:18.083 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 16:09:18.083 INFO [stderr] 
Dec 04 16:09:18.083 INFO [stderr] warning: function is never used: `tail_even_fibonacci_numbers`
Dec 04 16:09:18.083 INFO [stderr]  --> src/problems/prob2.rs:5:1
Dec 04 16:09:18.083 INFO [stderr]   |
Dec 04 16:09:18.083 INFO [stderr] 5 | fn tail_even_fibonacci_numbers(lim: u64, current: u64, before: u64, att: u64) -> u64 {
Dec 04 16:09:18.083 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 16:09:18.083 INFO [stderr] 
Dec 04 16:09:18.083 INFO [stderr] warning: function is never used: `largest_prime_factor`
Dec 04 16:09:18.083 INFO [stderr]  --> src/problems/prob3.rs:1:1
Dec 04 16:09:18.083 INFO [stderr]   |
Dec 04 16:09:18.083 INFO [stderr] 1 | pub fn largest_prime_factor(n: u64) -> u64 {
Dec 04 16:09:18.083 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 16:09:18.083 INFO [stderr] 
Dec 04 16:09:18.083 INFO [stderr] warning: function is never used: `tail_largest_prime_factor`
Dec 04 16:09:18.083 INFO [stderr]  --> src/problems/prob3.rs:5:1
Dec 04 16:09:18.083 INFO [stderr]   |
Dec 04 16:09:18.083 INFO [stderr] 5 | fn tail_largest_prime_factor(n: u64, lpf: u64, att: u64) -> u64 {
Dec 04 16:09:18.083 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 16:09:18.083 INFO [stderr] 
Dec 04 16:09:18.229 INFO [stderr] warning: unused variable: `n`
Dec 04 16:09:18.229 INFO [stderr]  --> src/main.rs:7:9
Dec 04 16:09:18.229 INFO [stderr]   |
Dec 04 16:09:18.229 INFO [stderr] 7 |     let n = buffer.trim().parse::<u64>().unwrap();
Dec 04 16:09:18.229 INFO [stderr]   |         ^ help: consider using `_n` instead
Dec 04 16:09:18.229 INFO [stderr]   |
Dec 04 16:09:18.229 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 04 16:09:18.229 INFO [stderr] 
Dec 04 16:09:18.240 INFO [stderr] warning: function is never used: `multiples_of_3_and_5`
Dec 04 16:09:18.240 INFO [stderr]  --> src/problems/prob1.rs:1:1
Dec 04 16:09:18.240 INFO [stderr]   |
Dec 04 16:09:18.240 INFO [stderr] 1 | pub fn multiples_of_3_and_5(n: u32) -> u64{
Dec 04 16:09:18.240 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 16:09:18.240 INFO [stderr]   |
Dec 04 16:09:18.240 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 04 16:09:18.240 INFO [stderr] 
Dec 04 16:09:18.240 INFO [stderr] warning: function is never used: `tail_multiples_of_3_and_5`
Dec 04 16:09:18.240 INFO [stderr]  --> src/problems/prob1.rs:5:1
Dec 04 16:09:18.240 INFO [stderr]   |
Dec 04 16:09:18.240 INFO [stderr] 5 | fn tail_multiples_of_3_and_5(n: u32, att: u64) -> u64 {
Dec 04 16:09:18.240 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 16:09:18.240 INFO [stderr] 
Dec 04 16:09:18.241 INFO [stderr] warning: function is never used: `even_fibonacci_numbers`
Dec 04 16:09:18.241 INFO [stderr]  --> src/problems/prob2.rs:1:1
Dec 04 16:09:18.241 INFO [stderr]   |
Dec 04 16:09:18.241 INFO [stderr] 1 | pub fn even_fibonacci_numbers(lim: u64) -> u64 {
Dec 04 16:09:18.241 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 16:09:18.241 INFO [stderr] 
Dec 04 16:09:18.241 INFO [stderr] warning: function is never used: `tail_even_fibonacci_numbers`
Dec 04 16:09:18.241 INFO [stderr]  --> src/problems/prob2.rs:5:1
Dec 04 16:09:18.241 INFO [stderr]   |
Dec 04 16:09:18.241 INFO [stderr] 5 | fn tail_even_fibonacci_numbers(lim: u64, current: u64, before: u64, att: u64) -> u64 {
Dec 04 16:09:18.241 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 16:09:18.241 INFO [stderr] 
Dec 04 16:09:18.241 INFO [stderr] warning: function is never used: `largest_prime_factor`
Dec 04 16:09:18.241 INFO [stderr]  --> src/problems/prob3.rs:1:1
Dec 04 16:09:18.241 INFO [stderr]   |
Dec 04 16:09:18.241 INFO [stderr] 1 | pub fn largest_prime_factor(n: u64) -> u64 {
Dec 04 16:09:18.241 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 16:09:18.241 INFO [stderr] 
Dec 04 16:09:18.241 INFO [stderr] warning: function is never used: `tail_largest_prime_factor`
Dec 04 16:09:18.241 INFO [stderr]  --> src/problems/prob3.rs:5:1
Dec 04 16:09:18.241 INFO [stderr]   |
Dec 04 16:09:18.241 INFO [stderr] 5 | fn tail_largest_prime_factor(n: u64, lpf: u64, att: u64) -> u64 {
Dec 04 16:09:18.241 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 16:09:18.241 INFO [stderr] 
Dec 04 16:09:18.287 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.63s
Dec 04 16:09:18.297 INFO [stderr] su: No module specific data is present
Dec 04 16:09:18.959 INFO running `"docker" "inspect" "6c2bfbf36919373dfebbd768f0056d6b7e5ec7aa9f840acc5cb43726d0056998"`
Dec 04 16:09:19.096 INFO running `"docker" "rm" "-f" "6c2bfbf36919373dfebbd768f0056d6b7e5ec7aa9f840acc5cb43726d0056998"`
Dec 04 16:09:19.309 INFO [stdout] 6c2bfbf36919373dfebbd768f0056d6b7e5ec7aa9f840acc5cb43726d0056998