[INFO] cloning repository https://github.com/etscrivner/programmingbitcoin-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/etscrivner/programmingbitcoin-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fetscrivner%2Fprogrammingbitcoin-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fetscrivner%2Fprogrammingbitcoin-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4741bf1d911bcc74fb993e71f3131a0e09f6f5f8
[INFO] checking etscrivner/programmingbitcoin-rust against master#b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18 for pr-79470
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fetscrivner%2Fprogrammingbitcoin-rust" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/etscrivner/programmingbitcoin-rust on toolchain b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/etscrivner/programmingbitcoin-rust
[INFO] finished tweaking git repo https://github.com/etscrivner/programmingbitcoin-rust
[INFO] tweaked toml for git repo https://github.com/etscrivner/programmingbitcoin-rust written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/etscrivner/programmingbitcoin-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 96adc7d69f3b5ec8a45edd0f7d051f8a225d6b007e8ff3f570500f6c1d3c28f5
[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" "96adc7d69f3b5ec8a45edd0f7d051f8a225d6b007e8ff3f570500f6c1d3c28f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "96adc7d69f3b5ec8a45edd0f7d051f8a225d6b007e8ff3f570500f6c1d3c28f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96adc7d69f3b5ec8a45edd0f7d051f8a225d6b007e8ff3f570500f6c1d3c28f5", kill_on_drop: false }`
[INFO] [stdout] 96adc7d69f3b5ec8a45edd0f7d051f8a225d6b007e8ff3f570500f6c1d3c28f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "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] 63141e3a28fe800f802ca68d9f746a376898e44cdc6082431e8d3f6113dff4b9
[INFO] running `Command { std: "docker" "start" "-a" "63141e3a28fe800f802ca68d9f746a376898e44cdc6082431e8d3f6113dff4b9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]    Compiling libc v0.2.46
[INFO] [stderr]     Checking byte-tools v0.3.0
[INFO] [stderr]     Checking byteorder v1.2.7
[INFO] [stderr]    Compiling rug v1.2.2
[INFO] [stderr]     Checking opaque-debug v0.2.1
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking block-padding v0.1.2
[INFO] [stderr]     Checking gmp-mpfr-sys v1.1.10
[INFO] [stderr]     Checking generic-array v0.12.0
[INFO] [stderr]     Checking digest v0.8.0
[INFO] [stderr]     Checking block-buffer v0.7.0
[INFO] [stderr]     Checking crypto-mac v0.7.0
[INFO] [stderr]     Checking sha2 v0.8.0
[INFO] [stderr]     Checking hmac v0.7.0
[INFO] [stderr]     Checking pbitcoinrs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `from_sec`
[INFO] [stdout]   --> src/programmingbitcoin/serialization.rs:54:8
[INFO] [stdout]    |
[INFO] [stdout] 54 |     fn from_sec(data: &Vec<u8>, curve: &Rc<CryptographicCurve>) -> Point {
[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] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/programmingbitcoin/base58.rs:63:13
[INFO] [stdout]    |
[INFO] [stdout] 63 |         let mut result = base58_encode(bytes);
[INFO] [stdout]    |             ----^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.29s
[INFO] running `Command { std: "docker" "inspect" "63141e3a28fe800f802ca68d9f746a376898e44cdc6082431e8d3f6113dff4b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63141e3a28fe800f802ca68d9f746a376898e44cdc6082431e8d3f6113dff4b9", kill_on_drop: false }`
[INFO] [stdout] 63141e3a28fe800f802ca68d9f746a376898e44cdc6082431e8d3f6113dff4b9