[INFO] cloning repository https://github.com/JayDalton/hello-world
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JayDalton/hello-world" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJayDalton%2Fhello-world"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJayDalton%2Fhello-world'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2d97f82ddc352d463ec4ce0eb3d119878bd82b84
[INFO] checking JayDalton/hello-world against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJayDalton%2Fhello-world" "/workspace/builds/worker-12/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JayDalton/hello-world on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/JayDalton/hello-world
[INFO] finished tweaking git repo https://github.com/JayDalton/hello-world
[INFO] tweaked toml for git repo https://github.com/JayDalton/hello-world written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/JayDalton/hello-world already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3317144d4fd87f212e34af105ab95ecdca3dc27386cf7b4c7df219fa752b3e4e
[INFO] running `"docker" "start" "-a" "3317144d4fd87f212e34af105ab95ecdca3dc27386cf7b4c7df219fa752b3e4e"`
[INFO] [stderr]     Checking num-traits v0.1.39
[INFO] [stderr]     Checking num-complex v0.1.38
[INFO] [stderr]     Checking rustfft v2.0.0
[INFO] [stderr]     Checking hello-world v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> source/mod.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |         try!(io::stdout().flush());
[INFO] [stderr]    |         ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> source/mod.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |         try!(io::stdin().read_line(&mut buf));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> source/primes.rs:127:41
[INFO] [stderr]     |
[INFO] [stderr] 127 | pub fn basic_sieve(limit: usize) -> Box<Iterator<Item = usize>> {
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = usize>`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> source/primes.rs:151:45
[INFO] [stderr]     |
[INFO] [stderr] 151 | pub fn optimized_sieve(limit: usize) -> Box<Iterator<Item = usize>> {
[INFO] [stderr]     |                                             ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = usize>`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `max_num`
[INFO] [stderr]   --> source/primes.rs:46:21
[INFO] [stderr]    |
[INFO] [stderr] 46 | pub fn athkin_sieve(max_num: usize) -> HashMap<usize, bool> {
[INFO] [stderr]    |                     ^^^^^^^ help: consider prefixing with an underscore: `_max_num`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `zeigen`
[INFO] [stderr]    --> source/primes.rs:220:33
[INFO] [stderr]     |
[INFO] [stderr] 220 | pub fn primesums(grenze: usize, zeigen: bool) -> usize {
[INFO] [stderr]     |                                 ^^^^^^ help: consider prefixing with an underscore: `_zeigen`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> source/primes.rs:221:9
[INFO] [stderr]     |
[INFO] [stderr] 221 |     let mut anzahl: usize = 0;
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_factors`
[INFO] [stderr]   --> source/primes.rs:15:1
[INFO] [stderr]    |
[INFO] [stderr] 15 | fn get_factors(x:u64) -> Vec<u64> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_prime`
[INFO] [stderr]   --> source/primes.rs:28:1
[INFO] [stderr]    |
[INFO] [stderr] 28 | fn is_prime(x:u64) -> bool {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_prime_factors`
[INFO] [stderr]   --> source/primes.rs:32:1
[INFO] [stderr]    |
[INFO] [stderr] 32 | fn get_prime_factors(x:u64) -> Vec<u64> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_largest_prime`
[INFO] [stderr]   --> source/primes.rs:42:1
[INFO] [stderr]    |
[INFO] [stderr] 42 | fn get_largest_prime(x:u64) -> u64 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `athkin_sieve`
[INFO] [stderr]   --> source/primes.rs:46:1
[INFO] [stderr]    |
[INFO] [stderr] 46 | pub fn athkin_sieve(max_num: usize) -> HashMap<usize, bool> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `simple_sieve`
[INFO] [stderr]    --> source/primes.rs:107:1
[INFO] [stderr]     |
[INFO] [stderr] 107 | pub fn simple_sieve(limit: usize) -> Vec<usize> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `basic_sieve`
[INFO] [stderr]    --> source/primes.rs:127:1
[INFO] [stderr]     |
[INFO] [stderr] 127 | pub fn basic_sieve(limit: usize) -> Box<Iterator<Item = usize>> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_duration`
[INFO] [stderr]    --> source/primes.rs:184:1
[INFO] [stderr]     |
[INFO] [stderr] 184 | pub fn get_duration(strt: Instant) -> u64 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `compare_primealgos`
[INFO] [stderr]    --> source/primes.rs:192:1
[INFO] [stderr]     |
[INFO] [stderr] 192 | pub fn compare_primealgos(){
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_double`
[INFO] [stderr]   --> source/mod.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 |     pub fn get_double(msg: &str) -> f64 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> source/mod.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |         try!(io::stdout().flush());
[INFO] [stderr]    |         ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> source/mod.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |         try!(io::stdin().read_line(&mut buf));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> source/primes.rs:127:41
[INFO] [stderr]     |
[INFO] [stderr] 127 | pub fn basic_sieve(limit: usize) -> Box<Iterator<Item = usize>> {
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = usize>`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> source/primes.rs:151:45
[INFO] [stderr]     |
[INFO] [stderr] 151 | pub fn optimized_sieve(limit: usize) -> Box<Iterator<Item = usize>> {
[INFO] [stderr]     |                                             ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = usize>`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `max_num`
[INFO] [stderr]   --> source/primes.rs:46:21
[INFO] [stderr]    |
[INFO] [stderr] 46 | pub fn athkin_sieve(max_num: usize) -> HashMap<usize, bool> {
[INFO] [stderr]    |                     ^^^^^^^ help: consider prefixing with an underscore: `_max_num`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `zeigen`
[INFO] [stderr]    --> source/primes.rs:220:33
[INFO] [stderr]     |
[INFO] [stderr] 220 | pub fn primesums(grenze: usize, zeigen: bool) -> usize {
[INFO] [stderr]     |                                 ^^^^^^ help: consider prefixing with an underscore: `_zeigen`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> source/primes.rs:221:9
[INFO] [stderr]     |
[INFO] [stderr] 221 |     let mut anzahl: usize = 0;
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_factors`
[INFO] [stderr]   --> source/primes.rs:15:1
[INFO] [stderr]    |
[INFO] [stderr] 15 | fn get_factors(x:u64) -> Vec<u64> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_prime`
[INFO] [stderr]   --> source/primes.rs:28:1
[INFO] [stderr]    |
[INFO] [stderr] 28 | fn is_prime(x:u64) -> bool {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_prime_factors`
[INFO] [stderr]   --> source/primes.rs:32:1
[INFO] [stderr]    |
[INFO] [stderr] 32 | fn get_prime_factors(x:u64) -> Vec<u64> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_largest_prime`
[INFO] [stderr]   --> source/primes.rs:42:1
[INFO] [stderr]    |
[INFO] [stderr] 42 | fn get_largest_prime(x:u64) -> u64 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `athkin_sieve`
[INFO] [stderr]   --> source/primes.rs:46:1
[INFO] [stderr]    |
[INFO] [stderr] 46 | pub fn athkin_sieve(max_num: usize) -> HashMap<usize, bool> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `simple_sieve`
[INFO] [stderr]    --> source/primes.rs:107:1
[INFO] [stderr]     |
[INFO] [stderr] 107 | pub fn simple_sieve(limit: usize) -> Vec<usize> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `basic_sieve`
[INFO] [stderr]    --> source/primes.rs:127:1
[INFO] [stderr]     |
[INFO] [stderr] 127 | pub fn basic_sieve(limit: usize) -> Box<Iterator<Item = usize>> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_duration`
[INFO] [stderr]    --> source/primes.rs:184:1
[INFO] [stderr]     |
[INFO] [stderr] 184 | pub fn get_duration(strt: Instant) -> u64 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `compare_primealgos`
[INFO] [stderr]    --> source/primes.rs:192:1
[INFO] [stderr]     |
[INFO] [stderr] 192 | pub fn compare_primealgos(){
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_double`
[INFO] [stderr]   --> source/mod.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 |     pub fn get_double(msg: &str) -> f64 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.79s
[INFO] running `"docker" "inspect" "3317144d4fd87f212e34af105ab95ecdca3dc27386cf7b4c7df219fa752b3e4e"`
[INFO] running `"docker" "rm" "-f" "3317144d4fd87f212e34af105ab95ecdca3dc27386cf7b4c7df219fa752b3e4e"`
[INFO] [stdout] 3317144d4fd87f212e34af105ab95ecdca3dc27386cf7b4c7df219fa752b3e4e