Dec 11 15:51:31.741 INFO checking k-masatany/rust_self_study against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 15:51:31.742 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-7/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/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 11 15:51:32.180 INFO [stdout] 0db4e680df512655010f630b6423d1103b1ea9fa449269927735e1d390ece7a3
Dec 11 15:51:32.184 INFO running `"docker" "start" "-a" "0db4e680df512655010f630b6423d1103b1ea9fa449269927735e1d390ece7a3"`
Dec 11 15:51:33.423 INFO [stderr] usermod: no changes
Dec 11 15:51:33.463 INFO [stderr]     Checking rust_self_study v0.1.0 (/source)
Dec 11 15:51:34.064 INFO [stderr] warning: unused variable: `n`
Dec 11 15:51:34.064 INFO [stderr]  --> src/main.rs:7:9
Dec 11 15:51:34.064 INFO [stderr]   |
Dec 11 15:51:34.064 INFO [stderr] 7 |     let n = buffer.trim().parse::<u64>().unwrap();
Dec 11 15:51:34.064 INFO [stderr]   |         ^ help: consider using `_n` instead
Dec 11 15:51:34.064 INFO [stderr]   |
Dec 11 15:51:34.064 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 11 15:51:34.064 INFO [stderr] 
Dec 11 15:51:34.076 INFO [stderr] warning: function is never used: `multiples_of_3_and_5`
Dec 11 15:51:34.076 INFO [stderr]  --> src/problems/prob1.rs:1:1
Dec 11 15:51:34.076 INFO [stderr]   |
Dec 11 15:51:34.076 INFO [stderr] 1 | pub fn multiples_of_3_and_5(n: u32) -> u64{
Dec 11 15:51:34.076 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 15:51:34.076 INFO [stderr]   |
Dec 11 15:51:34.076 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 11 15:51:34.076 INFO [stderr] 
Dec 11 15:51:34.076 INFO [stderr] warning: function is never used: `tail_multiples_of_3_and_5`
Dec 11 15:51:34.076 INFO [stderr]  --> src/problems/prob1.rs:5:1
Dec 11 15:51:34.076 INFO [stderr]   |
Dec 11 15:51:34.076 INFO [stderr] 5 | fn tail_multiples_of_3_and_5(n: u32, att: u64) -> u64 {
Dec 11 15:51:34.076 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 15:51:34.076 INFO [stderr] 
Dec 11 15:51:34.076 INFO [stderr] warning: function is never used: `even_fibonacci_numbers`
Dec 11 15:51:34.076 INFO [stderr]  --> src/problems/prob2.rs:1:1
Dec 11 15:51:34.076 INFO [stderr]   |
Dec 11 15:51:34.076 INFO [stderr] 1 | pub fn even_fibonacci_numbers(lim: u64) -> u64 {
Dec 11 15:51:34.077 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 15:51:34.077 INFO [stderr] 
Dec 11 15:51:34.077 INFO [stderr] warning: function is never used: `tail_even_fibonacci_numbers`
Dec 11 15:51:34.077 INFO [stderr]  --> src/problems/prob2.rs:5:1
Dec 11 15:51:34.077 INFO [stderr]   |
Dec 11 15:51:34.077 INFO [stderr] 5 | fn tail_even_fibonacci_numbers(lim: u64, current: u64, before: u64, att: u64) -> u64 {
Dec 11 15:51:34.077 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 15:51:34.077 INFO [stderr] 
Dec 11 15:51:34.077 INFO [stderr] warning: function is never used: `largest_prime_factor`
Dec 11 15:51:34.077 INFO [stderr]  --> src/problems/prob3.rs:1:1
Dec 11 15:51:34.077 INFO [stderr]   |
Dec 11 15:51:34.077 INFO [stderr] 1 | pub fn largest_prime_factor(n: u64) -> u64 {
Dec 11 15:51:34.077 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 15:51:34.077 INFO [stderr] 
Dec 11 15:51:34.077 INFO [stderr] warning: function is never used: `tail_largest_prime_factor`
Dec 11 15:51:34.077 INFO [stderr]  --> src/problems/prob3.rs:5:1
Dec 11 15:51:34.077 INFO [stderr]   |
Dec 11 15:51:34.077 INFO [stderr] 5 | fn tail_largest_prime_factor(n: u64, lpf: u64, att: u64) -> u64 {
Dec 11 15:51:34.077 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 15:51:34.077 INFO [stderr] 
Dec 11 15:51:34.088 INFO [stderr] warning: unused variable: `n`
Dec 11 15:51:34.088 INFO [stderr]  --> src/main.rs:7:9
Dec 11 15:51:34.088 INFO [stderr]   |
Dec 11 15:51:34.088 INFO [stderr] 7 |     let n = buffer.trim().parse::<u64>().unwrap();
Dec 11 15:51:34.088 INFO [stderr]   |         ^ help: consider using `_n` instead
Dec 11 15:51:34.088 INFO [stderr]   |
Dec 11 15:51:34.088 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 11 15:51:34.088 INFO [stderr] 
Dec 11 15:51:34.100 INFO [stderr] warning: function is never used: `multiples_of_3_and_5`
Dec 11 15:51:34.100 INFO [stderr]  --> src/problems/prob1.rs:1:1
Dec 11 15:51:34.100 INFO [stderr]   |
Dec 11 15:51:34.100 INFO [stderr] 1 | pub fn multiples_of_3_and_5(n: u32) -> u64{
Dec 11 15:51:34.100 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 15:51:34.100 INFO [stderr]   |
Dec 11 15:51:34.100 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 11 15:51:34.100 INFO [stderr] 
Dec 11 15:51:34.100 INFO [stderr] warning: function is never used: `tail_multiples_of_3_and_5`
Dec 11 15:51:34.100 INFO [stderr]  --> src/problems/prob1.rs:5:1
Dec 11 15:51:34.100 INFO [stderr]   |
Dec 11 15:51:34.100 INFO [stderr] 5 | fn tail_multiples_of_3_and_5(n: u32, att: u64) -> u64 {
Dec 11 15:51:34.100 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 15:51:34.100 INFO [stderr] 
Dec 11 15:51:34.100 INFO [stderr] warning: function is never used: `even_fibonacci_numbers`
Dec 11 15:51:34.100 INFO [stderr]  --> src/problems/prob2.rs:1:1
Dec 11 15:51:34.100 INFO [stderr]   |
Dec 11 15:51:34.100 INFO [stderr] 1 | pub fn even_fibonacci_numbers(lim: u64) -> u64 {
Dec 11 15:51:34.101 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 15:51:34.101 INFO [stderr] 
Dec 11 15:51:34.101 INFO [stderr] warning: function is never used: `tail_even_fibonacci_numbers`
Dec 11 15:51:34.101 INFO [stderr]  --> src/problems/prob2.rs:5:1
Dec 11 15:51:34.101 INFO [stderr]   |
Dec 11 15:51:34.101 INFO [stderr] 5 | fn tail_even_fibonacci_numbers(lim: u64, current: u64, before: u64, att: u64) -> u64 {
Dec 11 15:51:34.101 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 15:51:34.101 INFO [stderr] 
Dec 11 15:51:34.101 INFO [stderr] warning: function is never used: `largest_prime_factor`
Dec 11 15:51:34.101 INFO [stderr]  --> src/problems/prob3.rs:1:1
Dec 11 15:51:34.101 INFO [stderr]   |
Dec 11 15:51:34.101 INFO [stderr] 1 | pub fn largest_prime_factor(n: u64) -> u64 {
Dec 11 15:51:34.101 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 15:51:34.101 INFO [stderr] 
Dec 11 15:51:34.101 INFO [stderr] warning: function is never used: `tail_largest_prime_factor`
Dec 11 15:51:34.101 INFO [stderr]  --> src/problems/prob3.rs:5:1
Dec 11 15:51:34.101 INFO [stderr]   |
Dec 11 15:51:34.101 INFO [stderr] 5 | fn tail_largest_prime_factor(n: u64, lpf: u64, att: u64) -> u64 {
Dec 11 15:51:34.101 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 15:51:34.101 INFO [stderr] 
Dec 11 15:51:34.188 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.74s
Dec 11 15:51:34.204 INFO [stderr] su: No module specific data is present
Dec 11 15:51:35.196 INFO running `"docker" "inspect" "0db4e680df512655010f630b6423d1103b1ea9fa449269927735e1d390ece7a3"`
Dec 11 15:51:35.556 INFO running `"docker" "rm" "-f" "0db4e680df512655010f630b6423d1103b1ea9fa449269927735e1d390ece7a3"`
Dec 11 15:51:35.856 INFO [stdout] 0db4e680df512655010f630b6423d1103b1ea9fa449269927735e1d390ece7a3