[INFO] updating cached repository etscrivner/programmingbitcoin-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/etscrivner/programmingbitcoin-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/etscrivner/programmingbitcoin-rust" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/etscrivner/programmingbitcoin-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/etscrivner/programmingbitcoin-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/etscrivner/programmingbitcoin-rust" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/etscrivner/programmingbitcoin-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/etscrivner/programmingbitcoin-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4741bf1d911bcc74fb993e71f3131a0e09f6f5f8
[INFO] sha for GitHub repo etscrivner/programmingbitcoin-rust: 4741bf1d911bcc74fb993e71f3131a0e09f6f5f8
[INFO] validating manifest of etscrivner/programmingbitcoin-rust on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of etscrivner/programmingbitcoin-rust on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing etscrivner/programmingbitcoin-rust
[INFO] finished frobbing etscrivner/programmingbitcoin-rust
[INFO] frobbed toml for etscrivner/programmingbitcoin-rust written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/etscrivner/programmingbitcoin-rust/Cargo.toml
[INFO] started frobbing etscrivner/programmingbitcoin-rust
[INFO] finished frobbing etscrivner/programmingbitcoin-rust
[INFO] frobbed toml for etscrivner/programmingbitcoin-rust written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/etscrivner/programmingbitcoin-rust/Cargo.toml
[INFO] crate etscrivner/programmingbitcoin-rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking etscrivner/programmingbitcoin-rust against master#60960a260f7b5c695fd0717311d72ce62dd4eb43 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-0/master#60960a260f7b5c695fd0717311d72ce62dd4eb43:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/etscrivner/programmingbitcoin-rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 0e0ab942ea7803e5cf818d3356f4f902438c700847327b09cc461395aa6a7c72
[INFO] running `"docker" "start" "-a" "0e0ab942ea7803e5cf818d3356f4f902438c700847327b09cc461395aa6a7c72"`
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.1.10
[INFO] [stderr]    Compiling rug v1.2.2
[INFO] [stderr]     Checking block-buffer v0.7.0
[INFO] [stderr]     Checking sha2 v0.8.0
[INFO] [stderr]     Checking pbitcoinrs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `from_sec`
[INFO] [stderr]   --> src/programmingbitcoin/serialization.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |     fn from_sec(data: &Vec<u8>, curve: &Rc<CryptographicCurve>) -> Point {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/programmingbitcoin/base58.rs:63:13
[INFO] [stderr]    |
[INFO] [stderr] 63 |         let mut result = base58_encode(bytes);
[INFO] [stderr]    |             ----^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5m 02s
[INFO] running `"docker" "inspect" "0e0ab942ea7803e5cf818d3356f4f902438c700847327b09cc461395aa6a7c72"`
[INFO] running `"docker" "rm" "-f" "0e0ab942ea7803e5cf818d3356f4f902438c700847327b09cc461395aa6a7c72"`
[INFO] [stdout] 0e0ab942ea7803e5cf818d3356f4f902438c700847327b09cc461395aa6a7c72