[INFO] crate pew 0.2.3 is already in cache
[INFO] testing pew-0.2.3 against 1.44.0 for beta-1.45-1
[INFO] extracting crate pew 0.2.3 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate pew 0.2.3 on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate pew 0.2.3
[INFO] finished tweaking crates.io crate pew 0.2.3
[INFO] tweaked toml for crates.io crate pew 0.2.3 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] fe04713954f9008c9561fac0be41c72db87d8c7f29f199136295387f160270cf
[INFO] running `"docker" "start" "-a" "fe04713954f9008c9561fac0be41c72db87d8c7f29f199136295387f160270cf"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling pew v0.2.3 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]   --> src/lib.rs:17:1
[INFO] [stderr]    |
[INFO] [stderr] 17 | #![feature(asm)]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'asm': the syntax of asm! will change soon, use llvm_asm! to avoid breakage
[INFO] [stderr]   --> src/lib.rs:82:9
[INFO] [stderr]    |
[INFO] [stderr] 82 |         asm!("" : "+r" (&_v) : : : "volatile");
[INFO] [stderr]    |         ^^^ help: replace the use of the deprecated item: `llvm_asm`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'asm': the syntax of asm! will change soon, use llvm_asm! to avoid breakage
[INFO] [stderr]    --> src/lib.rs:107:9
[INFO] [stderr]     |
[INFO] [stderr] 107 |         asm!("" : : : "memory" : "volatile");
[INFO] [stderr]     |         ^^^ help: replace the use of the deprecated item: `llvm_asm`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/benchmark.rs:17:43
[INFO] [stderr]    |
[INFO] [stderr] 17 | fn compose<T: 'static, U: 'static>(f: Box<Fn(u64) -> T>, g: fn(T) -> U) -> Box<Fn(u64) -> U> {
[INFO] [stderr]    |                                           ^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(u64) -> T`
[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]   --> src/benchmark.rs:17:80
[INFO] [stderr]    |
[INFO] [stderr] 17 | fn compose<T: 'static, U: 'static>(f: Box<Fn(u64) -> T>, g: fn(T) -> U) -> Box<Fn(u64) -> U> {
[INFO] [stderr]    |                                                                                ^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(u64) -> U`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/benchmark.rs:88:20
[INFO] [stderr]    |
[INFO] [stderr] 88 |     generator: Box<Fn(u64) -> T>,
[INFO] [stderr]    |                    ^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(u64) -> T`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]  --> src/benchmark.rs:3:23
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::sync::{Once, ONCE_INIT};
[INFO] [stderr]   |                       ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]  --> src/benchmark.rs:5:23
[INFO] [stderr]   |
[INFO] [stderr] 5 | static HEADER: Once = ONCE_INIT;
[INFO] [stderr]   |                       ^^^^^^^^^ help: replace the use of the deprecated item: `Once::new()`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/config.rs:53:56
[INFO] [stderr]    |
[INFO] [stderr] 53 |                 eprintln!("Illegal regex {}: {}", s, e.description());
[INFO] [stderr]    |                                                        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error; 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `pew`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "fe04713954f9008c9561fac0be41c72db87d8c7f29f199136295387f160270cf"`
[INFO] running `"docker" "rm" "-f" "fe04713954f9008c9561fac0be41c72db87d8c7f29f199136295387f160270cf"`
[INFO] [stdout] fe04713954f9008c9561fac0be41c72db87d8c7f29f199136295387f160270cf