[INFO] fetching crate rust-base58 0.0.4...
[INFO] checking rust-base58-0.0.4 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[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 f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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 `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 913a87c6a2eb232ef71d253e010882b7516b38f703b841d3e4fb23af0e7c8975
[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" "913a87c6a2eb232ef71d253e010882b7516b38f703b841d3e4fb23af0e7c8975", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "913a87c6a2eb232ef71d253e010882b7516b38f703b841d3e4fb23af0e7c8975", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "913a87c6a2eb232ef71d253e010882b7516b38f703b841d3e4fb23af0e7c8975", kill_on_drop: false }`
[INFO] [stdout] 913a87c6a2eb232ef71d253e010882b7516b38f703b841d3e4fb23af0e7c8975
[INFO] running `Command { std: "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" "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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 51f7167e967a62a4eefbfe18c292e574ed8f206a7340cae9d419ec85bdfcc190
[INFO] running `Command { std: "docker" "start" "-a" "51f7167e967a62a4eefbfe18c292e574ed8f206a7340cae9d419ec85bdfcc190", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-bigint v0.3.0
[INFO] [stderr]    Compiling num-rational v0.3.0
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]     Checking num-complex v0.3.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking num v0.3.0
[INFO] [stderr]     Checking rust-base58 v0.0.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: static is never used: `FLICKR_ALPHA`
[INFO] [stdout]   --> src/base58.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | / static FLICKR_ALPHA: &'static[u8] = b"123456789\
[INFO] [stdout] 13 | |                                       abcdefghijkmnopqrstuvwxyz\
[INFO] [stdout] 14 | |                                       ABCDEFGHJKLMNPQRSTUVWXYZ";
[INFO] [stdout]    | |________________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `gen_iter` found for struct `ThreadRng` in the current scope
[INFO] [stdout]    --> src/base58.rs:201:34
[INFO] [stdout]     |
[INFO] [stdout] 201 |             let v = thread_rng().gen_iter::<u8>().take(times)
[INFO] [stdout]     |                                  ^^^^^^^^ method not found in `ThreadRng`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust-base58`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "51f7167e967a62a4eefbfe18c292e574ed8f206a7340cae9d419ec85bdfcc190", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51f7167e967a62a4eefbfe18c292e574ed8f206a7340cae9d419ec85bdfcc190", kill_on_drop: false }`
[INFO] [stdout] 51f7167e967a62a4eefbfe18c292e574ed8f206a7340cae9d419ec85bdfcc190