[INFO] fetching crate slow_primes 0.1.14...
[INFO] checking slow_primes-0.1.14 against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] extracting crate slow_primes 0.1.14 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate slow_primes 0.1.14 on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate slow_primes 0.1.14
[INFO] finished tweaking crates.io crate slow_primes 0.1.14
[INFO] tweaked toml for crates.io crate slow_primes 0.1.14 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] d29b73d0be102d7933b4dad3cc4f3c74e3e5745e9810eef3855b3c691734255e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "d29b73d0be102d7933b4dad3cc4f3c74e3e5745e9810eef3855b3c691734255e"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking slow_primes v0.1.14 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/bit.rs:915:13
[INFO] [stderr]     |
[INFO] [stderr] 915 |             try!(write!(fmt, "{}", if bit { 1 } else { 0 }));
[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]     --> src/bit.rs:1600:9
[INFO] [stderr]      |
[INFO] [stderr] 1600 |         try!(write!(fmt, "{{"));
[INFO] [stderr]      |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]     --> src/bit.rs:1604:17
[INFO] [stderr]      |
[INFO] [stderr] 1604 |                 try!(write!(fmt, ", "));
[INFO] [stderr]      |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]     --> src/bit.rs:1606:13
[INFO] [stderr]      |
[INFO] [stderr] 1606 |             try!(write!(fmt, "{:?}", n));
[INFO] [stderr]      |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/bit.rs:915:13
[INFO] [stderr]     |
[INFO] [stderr] 915 |             try!(write!(fmt, "{}", if bit { 1 } else { 0 }));
[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]     --> src/bit.rs:1600:9
[INFO] [stderr]      |
[INFO] [stderr] 1600 |         try!(write!(fmt, "{{"));
[INFO] [stderr]      |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]     --> src/bit.rs:1604:17
[INFO] [stderr]      |
[INFO] [stderr] 1604 |                 try!(write!(fmt, ", "));
[INFO] [stderr]      |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]     --> src/bit.rs:1606:13
[INFO] [stderr]      |
[INFO] [stderr] 1606 |             try!(write!(fmt, "{:?}", n));
[INFO] [stderr]      |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/perfect_power.rs:106:43
[INFO] [stderr]     |
[INFO] [stderr] 106 |                        if is_prime { Some((expected))} else { None })
[INFO] [stderr]     |                                           ^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]    --> src/perfect_power.rs:123:26
[INFO] [stderr]     |
[INFO] [stderr] 123 |                 for n in (1..MAX.log(pq as f64) as u32) {
[INFO] [stderr]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> examples/small_prime_props.rs:54:18
[INFO] [stderr]    |
[INFO] [stderr] 54 |         for _ in (last..p) {
[INFO] [stderr]    |                  ^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.39s
[INFO] running `"docker" "inspect" "d29b73d0be102d7933b4dad3cc4f3c74e3e5745e9810eef3855b3c691734255e"`
[INFO] running `"docker" "rm" "-f" "d29b73d0be102d7933b4dad3cc4f3c74e3e5745e9810eef3855b3c691734255e"`
[INFO] [stdout] d29b73d0be102d7933b4dad3cc4f3c74e3e5745e9810eef3855b3c691734255e