[INFO] crate rust-base58 0.0.4 is already in cache
[INFO] testing rust-base58-0.0.4 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate rust-base58 0.0.4 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate rust-base58 0.0.4 on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate rust-base58 0.0.4
[INFO] finished tweaking crates.io crate rust-base58 0.0.4
[INFO] tweaked toml for crates.io crate rust-base58 0.0.4 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stdout] fe8dffbffe54a816b699be8b51da191cdc08133fa13d77d0f912758a1fe51ee4
[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" "fe8dffbffe54a816b699be8b51da191cdc08133fa13d77d0f912758a1fe51ee4"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num v0.2.1
[INFO] [stderr]    Compiling rust-base58 v0.0.4 (/opt/rustwide/workdir)
[INFO] [stderr] warning: static is never used: `FLICKR_ALPHA`
[INFO] [stderr]   --> src/base58.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | / static FLICKR_ALPHA: &'static[u8] = b"123456789\
[INFO] [stderr] 13 | |                                       abcdefghijkmnopqrstuvwxyz\
[INFO] [stderr] 14 | |                                       ABCDEFGHJKLMNPQRSTUVWXYZ";
[INFO] [stderr]    | |________________________________________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.70s
[INFO] running `"docker" "inspect" "fe8dffbffe54a816b699be8b51da191cdc08133fa13d77d0f912758a1fe51ee4"`
[INFO] running `"docker" "rm" "-f" "fe8dffbffe54a816b699be8b51da191cdc08133fa13d77d0f912758a1fe51ee4"`
[INFO] [stdout] fe8dffbffe54a816b699be8b51da191cdc08133fa13d77d0f912758a1fe51ee4
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e3aa62b2354876bc4c02ca09cffb235ad196883eb7b7b4c4e391ffb5947182fe
[INFO] running `"docker" "start" "-a" "e3aa62b2354876bc4c02ca09cffb235ad196883eb7b7b4c4e391ffb5947182fe"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling rust-base58 v0.0.4 (/opt/rustwide/workdir)
[INFO] [stderr] warning: static is never used: `FLICKR_ALPHA`
[INFO] [stderr]   --> src/base58.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | / static FLICKR_ALPHA: &'static[u8] = b"123456789\
[INFO] [stderr] 13 | |                                       abcdefghijkmnopqrstuvwxyz\
[INFO] [stderr] 14 | |                                       ABCDEFGHJKLMNPQRSTUVWXYZ";
[INFO] [stderr]    | |________________________________________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `gen_iter` found for struct `rand::prelude::ThreadRng` in the current scope
[INFO] [stderr]    --> src/base58.rs:201:34
[INFO] [stderr]     |
[INFO] [stderr] 201 |             let v = thread_rng().gen_iter::<u8>().take(times)
[INFO] [stderr]     |                                  ^^^^^^^^ method not found in `rand::prelude::ThreadRng`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0599`.
[INFO] [stderr] error: could not compile `rust-base58`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "e3aa62b2354876bc4c02ca09cffb235ad196883eb7b7b4c4e391ffb5947182fe"`
[INFO] running `"docker" "rm" "-f" "e3aa62b2354876bc4c02ca09cffb235ad196883eb7b7b4c4e391ffb5947182fe"`
[INFO] [stdout] e3aa62b2354876bc4c02ca09cffb235ad196883eb7b7b4c4e391ffb5947182fe