[INFO] fetching crate rust-base58 0.0.4...
[INFO] checking rust-base58-0.0.4 against try#3e22d1f9053c0fc87629b3c6d5d9567856368e5d for pr-78714
[INFO] extracting crate rust-base58 0.0.4 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate rust-base58 0.0.4 on toolchain 3e22d1f9053c0fc87629b3c6d5d9567856368e5d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "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-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e6f8b0a8493d5fa0ac5ed88b1f9fba71af341c8c6cd73500903f313719c7823f
[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" "e6f8b0a8493d5fa0ac5ed88b1f9fba71af341c8c6cd73500903f313719c7823f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e6f8b0a8493d5fa0ac5ed88b1f9fba71af341c8c6cd73500903f313719c7823f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6f8b0a8493d5fa0ac5ed88b1f9fba71af341c8c6cd73500903f313719c7823f", kill_on_drop: false }`
[INFO] [stdout] e6f8b0a8493d5fa0ac5ed88b1f9fba71af341c8c6cd73500903f313719c7823f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0902956915b043f60ccb436cafab3c0f1836cf8ed92686421b65f9af5c07164d
[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" "0902956915b043f60ccb436cafab3c0f1836cf8ed92686421b65f9af5c07164d", kill_on_drop: false }`
[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" "0902956915b043f60ccb436cafab3c0f1836cf8ed92686421b65f9af5c07164d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0902956915b043f60ccb436cafab3c0f1836cf8ed92686421b65f9af5c07164d", kill_on_drop: false }`
[INFO] [stdout] 0902956915b043f60ccb436cafab3c0f1836cf8ed92686421b65f9af5c07164d