[INFO] crate from 0.0.2 is already in cache
[INFO] testing from-0.0.2 against 1.44.0 for beta-1.45-1
[INFO] extracting crate from 0.0.2 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate from 0.0.2 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 from 0.0.2
[INFO] finished tweaking crates.io crate from 0.0.2
[INFO] tweaked toml for crates.io crate from 0.0.2 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] [stdout] 0f2cd51288fb42c0d2e2db1f5d8f5aea59e833fe3f8dd45642d4aae754cfee50
[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" "0f2cd51288fb42c0d2e2db1f5d8f5aea59e833fe3f8dd45642d4aae754cfee50"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling from v0.0.2 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0599]: no method named `as_slice` found for reference `&'a std::string::String` in the current scope
[INFO] [stderr]   --> src/lib.rs:25:43
[INFO] [stderr]    |
[INFO] [stderr] 25 |     fn from(x: &'a String) -> &'a str { x.as_slice() }
[INFO] [stderr]    |                                           ^^^^^^^^ method not found in `&'a std::string::String`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `into_string` found for reference `&'a str` in the current scope
[INFO] [stderr]   --> src/lib.rs:29:39
[INFO] [stderr]    |
[INFO] [stderr] 29 |     fn from(x: &'a str) -> String { x.into_string() }
[INFO] [stderr]    |                                       ^^^^^^^^^^^ method not found in `&'a str`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0599`.
[INFO] [stderr] error: could not compile `from`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "0f2cd51288fb42c0d2e2db1f5d8f5aea59e833fe3f8dd45642d4aae754cfee50"`
[INFO] running `"docker" "rm" "-f" "0f2cd51288fb42c0d2e2db1f5d8f5aea59e833fe3f8dd45642d4aae754cfee50"`
[INFO] [stdout] 0f2cd51288fb42c0d2e2db1f5d8f5aea59e833fe3f8dd45642d4aae754cfee50