[INFO] cloning repository https://github.com/JayDalton/hello-world
[INFO] running `Command { std: "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", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJayDalton%2Fhello-world'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2d97f82ddc352d463ec4ce0eb3d119878bd82b84
[INFO] checking JayDalton/hello-world against master#5e3f1b148db5bfa27fee52464ae1f5d34c49d77b for pr-75502
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJayDalton%2Fhello-world" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JayDalton/hello-world on toolchain 5e3f1b148db5bfa27fee52464ae1f5d34c49d77b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-3/source/Cargo.toml
[INFO] crate git repo https://github.com/JayDalton/hello-world already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 016c07e31ce8fb4ac27ef5f1fd8e9cece50d61910f7004a432377f2d094edc90
[INFO] running `Command { std: "docker" "start" "-a" "016c07e31ce8fb4ac27ef5f1fd8e9cece50d61910f7004a432377f2d094edc90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "016c07e31ce8fb4ac27ef5f1fd8e9cece50d61910f7004a432377f2d094edc90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "016c07e31ce8fb4ac27ef5f1fd8e9cece50d61910f7004a432377f2d094edc90", kill_on_drop: false }`
[INFO] [stdout] 016c07e31ce8fb4ac27ef5f1fd8e9cece50d61910f7004a432377f2d094edc90
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1800da9a72619e8b136882bd25477ac103777c00c0f0f10d4e14783c7c71876f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1800da9a72619e8b136882bd25477ac103777c00c0f0f10d4e14783c7c71876f", kill_on_drop: false }`
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[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] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> source/mod.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |         try!(io::stdout().flush());
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> source/mod.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |         try!(io::stdin().read_line(&mut buf));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> source/primes.rs:127:41
[INFO] [stdout]     |
[INFO] [stdout] 127 | pub fn basic_sieve(limit: usize) -> Box<Iterator<Item = usize>> {
[INFO] [stdout]     |                                         ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = usize>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> source/primes.rs:151:45
[INFO] [stdout]     |
[INFO] [stdout] 151 | pub fn optimized_sieve(limit: usize) -> Box<Iterator<Item = usize>> {
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = usize>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> source/mod.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |         try!(io::stdout().flush());
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> source/mod.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |         try!(io::stdin().read_line(&mut buf));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> source/primes.rs:127:41
[INFO] [stdout]     |
[INFO] [stdout] 127 | pub fn basic_sieve(limit: usize) -> Box<Iterator<Item = usize>> {
[INFO] [stdout]     |                                         ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = usize>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> source/primes.rs:151:45
[INFO] [stdout]     |
[INFO] [stdout] 151 | pub fn optimized_sieve(limit: usize) -> Box<Iterator<Item = usize>> {
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = usize>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `max_num`
[INFO] [stdout]   --> source/primes.rs:46:21
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub fn athkin_sieve(max_num: usize) -> HashMap<usize, bool> {
[INFO] [stdout]    |                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_max_num`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `zeigen`
[INFO] [stdout]    --> source/primes.rs:220:33
[INFO] [stdout]     |
[INFO] [stdout] 220 | pub fn primesums(grenze: usize, zeigen: bool) -> usize {
[INFO] [stdout]     |                                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_zeigen`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> source/primes.rs:221:9
[INFO] [stdout]     |
[INFO] [stdout] 221 |     let mut anzahl: usize = 0;
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_factors`
[INFO] [stdout]   --> source/primes.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn get_factors(x:u64) -> Vec<u64> {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_prime`
[INFO] [stdout]   --> source/primes.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn is_prime(x:u64) -> bool {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_prime_factors`
[INFO] [stdout]   --> source/primes.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn get_prime_factors(x:u64) -> Vec<u64> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_largest_prime`
[INFO] [stdout]   --> source/primes.rs:42:4
[INFO] [stdout]    |
[INFO] [stdout] 42 | fn get_largest_prime(x:u64) -> u64 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `athkin_sieve`
[INFO] [stdout]   --> source/primes.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub fn athkin_sieve(max_num: usize) -> HashMap<usize, bool> {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `simple_sieve`
[INFO] [stdout]    --> source/primes.rs:107:8
[INFO] [stdout]     |
[INFO] [stdout] 107 | pub fn simple_sieve(limit: usize) -> Vec<usize> {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `basic_sieve`
[INFO] [stdout]    --> source/primes.rs:127:8
[INFO] [stdout]     |
[INFO] [stdout] 127 | pub fn basic_sieve(limit: usize) -> Box<Iterator<Item = usize>> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_duration`
[INFO] [stdout]    --> source/primes.rs:184:8
[INFO] [stdout]     |
[INFO] [stdout] 184 | pub fn get_duration(strt: Instant) -> u64 {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `compare_primealgos`
[INFO] [stdout]    --> source/primes.rs:192:8
[INFO] [stdout]     |
[INFO] [stdout] 192 | pub fn compare_primealgos(){
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_double`
[INFO] [stdout]   --> source/mod.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn get_double(msg: &str) -> f64 {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `max_num`
[INFO] [stdout]   --> source/primes.rs:46:21
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub fn athkin_sieve(max_num: usize) -> HashMap<usize, bool> {
[INFO] [stdout]    |                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_max_num`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `zeigen`
[INFO] [stdout]    --> source/primes.rs:220:33
[INFO] [stdout]     |
[INFO] [stdout] 220 | pub fn primesums(grenze: usize, zeigen: bool) -> usize {
[INFO] [stdout]     |                                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_zeigen`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> source/primes.rs:221:9
[INFO] [stdout]     |
[INFO] [stdout] 221 |     let mut anzahl: usize = 0;
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_factors`
[INFO] [stdout]   --> source/primes.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn get_factors(x:u64) -> Vec<u64> {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_prime`
[INFO] [stdout]   --> source/primes.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn is_prime(x:u64) -> bool {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_prime_factors`
[INFO] [stdout]   --> source/primes.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn get_prime_factors(x:u64) -> Vec<u64> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_largest_prime`
[INFO] [stdout]   --> source/primes.rs:42:4
[INFO] [stdout]    |
[INFO] [stdout] 42 | fn get_largest_prime(x:u64) -> u64 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `athkin_sieve`
[INFO] [stdout]   --> source/primes.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub fn athkin_sieve(max_num: usize) -> HashMap<usize, bool> {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `simple_sieve`
[INFO] [stdout]    --> source/primes.rs:107:8
[INFO] [stdout]     |
[INFO] [stdout] 107 | pub fn simple_sieve(limit: usize) -> Vec<usize> {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `basic_sieve`
[INFO] [stdout]    --> source/primes.rs:127:8
[INFO] [stdout]     |
[INFO] [stdout] 127 | pub fn basic_sieve(limit: usize) -> Box<Iterator<Item = usize>> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_duration`
[INFO] [stdout]    --> source/primes.rs:184:8
[INFO] [stdout]     |
[INFO] [stdout] 184 | pub fn get_duration(strt: Instant) -> u64 {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `compare_primealgos`
[INFO] [stdout]    --> source/primes.rs:192:8
[INFO] [stdout]     |
[INFO] [stdout] 192 | pub fn compare_primealgos(){
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_double`
[INFO] [stdout]   --> source/mod.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn get_double(msg: &str) -> f64 {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.33s
[INFO] running `Command { std: "docker" "inspect" "1800da9a72619e8b136882bd25477ac103777c00c0f0f10d4e14783c7c71876f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1800da9a72619e8b136882bd25477ac103777c00c0f0f10d4e14783c7c71876f", kill_on_drop: false }`
[INFO] [stdout] 1800da9a72619e8b136882bd25477ac103777c00c0f0f10d4e14783c7c71876f