[INFO] fetching crate ethereum-bigint 0.2.9...
[INFO] building ethereum-bigint-0.2.9 against master#ff34b919075f35a1787659e9c448a34b06bab8de for issue-85264
[INFO] extracting crate ethereum-bigint 0.2.9 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate ethereum-bigint 0.2.9 on toolchain ff34b919075f35a1787659e9c448a34b06bab8de
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ethereum-bigint 0.2.9
[INFO] finished tweaking crates.io crate ethereum-bigint 0.2.9
[INFO] tweaked toml for crates.io crate ethereum-bigint 0.2.9 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8ccde30a542c9a224c07238b41ecba2abd5290cfcbb18853fdbd79f3317cac65
[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" "8ccde30a542c9a224c07238b41ecba2abd5290cfcbb18853fdbd79f3317cac65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8ccde30a542c9a224c07238b41ecba2abd5290cfcbb18853fdbd79f3317cac65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ccde30a542c9a224c07238b41ecba2abd5290cfcbb18853fdbd79f3317cac65", kill_on_drop: false }`
[INFO] [stdout] 8ccde30a542c9a224c07238b41ecba2abd5290cfcbb18853fdbd79f3317cac65
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8d8d5209d32fa029bc489c92dc75570323b0a2ef9c022e515bd97fbabf369ff6
[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" "8d8d5209d32fa029bc489c92dc75570323b0a2ef9c022e515bd97fbabf369ff6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]    Compiling elastic-array-plus v0.9.1
[INFO] [stderr]    Compiling lazy_static v0.2.11
[INFO] [stderr]    Compiling ethereum-hexutil v0.2.3
[INFO] [stderr]    Compiling ethereum-rlp v0.2.3
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling ethereum-bigint v0.2.9 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]     --> src/uint/mod.rs:1149:8
[INFO] [stdout]      |
[INFO] [stdout] 1149 |                             try!(write!(f, "{:x}", nibble));
[INFO] [stdout]      |                             ^^^
[INFO] [stdout] ...
[INFO] [stdout] 1183 | construct_uint!(U512, 8);
[INFO] [stdout]      | ------------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]     --> src/uint/mod.rs:1166:8
[INFO] [stdout]      |
[INFO] [stdout] 1166 |                             try!(write!(f, "{:X}", nibble));
[INFO] [stdout]      |                             ^^^
[INFO] [stdout] ...
[INFO] [stdout] 1183 | construct_uint!(U512, 8);
[INFO] [stdout]      | ------------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]     --> src/uint/mod.rs:1149:8
[INFO] [stdout]      |
[INFO] [stdout] 1149 |                             try!(write!(f, "{:x}", nibble));
[INFO] [stdout]      |                             ^^^
[INFO] [stdout] ...
[INFO] [stdout] 1184 | construct_uint!(U256, 4);
[INFO] [stdout]      | ------------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]     --> src/uint/mod.rs:1166:8
[INFO] [stdout]      |
[INFO] [stdout] 1166 |                             try!(write!(f, "{:X}", nibble));
[INFO] [stdout]      |                             ^^^
[INFO] [stdout] ...
[INFO] [stdout] 1184 | construct_uint!(U256, 4);
[INFO] [stdout]      | ------------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]     --> src/uint/mod.rs:1149:8
[INFO] [stdout]      |
[INFO] [stdout] 1149 |                             try!(write!(f, "{:x}", nibble));
[INFO] [stdout]      |                             ^^^
[INFO] [stdout] ...
[INFO] [stdout] 1185 | construct_uint!(U128, 2);
[INFO] [stdout]      | ------------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]     --> src/uint/mod.rs:1166:8
[INFO] [stdout]      |
[INFO] [stdout] 1166 |                             try!(write!(f, "{:X}", nibble));
[INFO] [stdout]      |                             ^^^
[INFO] [stdout] ...
[INFO] [stdout] 1185 | construct_uint!(U128, 2);
[INFO] [stdout]      | ------------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `H256FastMap`
[INFO] [stdout]    --> src/hash/mod.rs:541:1
[INFO] [stdout]     |
[INFO] [stdout] 541 | pub type H256FastMap<T> = Map<H256, T, BuildHasherDefault<PlainHasher>>;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `H256FastSet`
[INFO] [stdout]    --> src/hash/mod.rs:544:1
[INFO] [stdout]     |
[INFO] [stdout] 544 | pub type H256FastSet = Set<H256, BuildHasherDefault<PlainHasher>>;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.81s
[INFO] running `Command { std: "docker" "inspect" "8d8d5209d32fa029bc489c92dc75570323b0a2ef9c022e515bd97fbabf369ff6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d8d5209d32fa029bc489c92dc75570323b0a2ef9c022e515bd97fbabf369ff6", kill_on_drop: false }`
[INFO] [stdout] 8d8d5209d32fa029bc489c92dc75570323b0a2ef9c022e515bd97fbabf369ff6
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b57ea0fe14983e08a5b7e6cc3e9a3e2bd69ff443f5380c57811848ae558813a2
[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" "b57ea0fe14983e08a5b7e6cc3e9a3e2bd69ff443f5380c57811848ae558813a2", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]     --> src/uint/mod.rs:1149:8
[INFO] [stdout]      |
[INFO] [stdout] 1149 |                             try!(write!(f, "{:x}", nibble));
[INFO] [stdout]      |                             ^^^
[INFO] [stdout] ...
[INFO] [stdout] 1183 | construct_uint!(U512, 8);
[INFO] [stdout]      | ------------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]     --> src/uint/mod.rs:1166:8
[INFO] [stdout]      |
[INFO] [stdout] 1166 |                             try!(write!(f, "{:X}", nibble));
[INFO] [stdout]      |                             ^^^
[INFO] [stdout] ...
[INFO] [stdout] 1183 | construct_uint!(U512, 8);
[INFO] [stdout]      | ------------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]     --> src/uint/mod.rs:1149:8
[INFO] [stdout]      |
[INFO] [stdout] 1149 |                             try!(write!(f, "{:x}", nibble));
[INFO] [stdout]      |                             ^^^
[INFO] [stdout] ...
[INFO] [stdout] 1184 | construct_uint!(U256, 4);
[INFO] [stdout]      | ------------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]     --> src/uint/mod.rs:1166:8
[INFO] [stdout]      |
[INFO] [stdout] 1166 |                             try!(write!(f, "{:X}", nibble));
[INFO] [stdout]      |                             ^^^
[INFO] [stdout] ...
[INFO] [stdout] 1184 | construct_uint!(U256, 4);
[INFO] [stdout]      | ------------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]     --> src/uint/mod.rs:1149:8
[INFO] [stdout]      |
[INFO] [stdout] 1149 |                             try!(write!(f, "{:x}", nibble));
[INFO] [stdout]      |                             ^^^
[INFO] [stdout] ...
[INFO] [stdout] 1185 | construct_uint!(U128, 2);
[INFO] [stdout]      | ------------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling ethereum-bigint v0.2.9 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]     --> src/uint/mod.rs:1166:8
[INFO] [stdout]      |
[INFO] [stdout] 1166 |                             try!(write!(f, "{:X}", nibble));
[INFO] [stdout]      |                             ^^^
[INFO] [stdout] ...
[INFO] [stdout] 1185 | construct_uint!(U128, 2);
[INFO] [stdout]      | ------------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `H256FastMap`
[INFO] [stdout]    --> src/hash/mod.rs:541:1
[INFO] [stdout]     |
[INFO] [stdout] 541 | pub type H256FastMap<T> = Map<H256, T, BuildHasherDefault<PlainHasher>>;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `H256FastSet`
[INFO] [stdout]    --> src/hash/mod.rs:544:1
[INFO] [stdout]     |
[INFO] [stdout] 544 | pub type H256FastSet = Set<H256, BuildHasherDefault<PlainHasher>>;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]     --> src/uint/mod.rs:1149:8
[INFO] [stdout]      |
[INFO] [stdout] 1149 |                             try!(write!(f, "{:x}", nibble));
[INFO] [stdout]      |                             ^^^
[INFO] [stdout] ...
[INFO] [stdout] 1183 | construct_uint!(U512, 8);
[INFO] [stdout]      | ------------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]     --> src/uint/mod.rs:1166:8
[INFO] [stdout]      |
[INFO] [stdout] 1166 |                             try!(write!(f, "{:X}", nibble));
[INFO] [stdout]      |                             ^^^
[INFO] [stdout] ...
[INFO] [stdout] 1183 | construct_uint!(U512, 8);
[INFO] [stdout]      | ------------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]     --> src/uint/mod.rs:1149:8
[INFO] [stdout]      |
[INFO] [stdout] 1149 |                             try!(write!(f, "{:x}", nibble));
[INFO] [stdout]      |                             ^^^
[INFO] [stdout] ...
[INFO] [stdout] 1184 | construct_uint!(U256, 4);
[INFO] [stdout]      | ------------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]     --> src/uint/mod.rs:1166:8
[INFO] [stdout]      |
[INFO] [stdout] 1166 |                             try!(write!(f, "{:X}", nibble));
[INFO] [stdout]      |                             ^^^
[INFO] [stdout] ...
[INFO] [stdout] 1184 | construct_uint!(U256, 4);
[INFO] [stdout]      | ------------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]     --> src/uint/mod.rs:1149:8
[INFO] [stdout]      |
[INFO] [stdout] 1149 |                             try!(write!(f, "{:x}", nibble));
[INFO] [stdout]      |                             ^^^
[INFO] [stdout] ...
[INFO] [stdout] 1185 | construct_uint!(U128, 2);
[INFO] [stdout]      | ------------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]     --> src/uint/mod.rs:1166:8
[INFO] [stdout]      |
[INFO] [stdout] 1166 |                             try!(write!(f, "{:X}", nibble));
[INFO] [stdout]      |                             ^^^
[INFO] [stdout] ...
[INFO] [stdout] 1185 | construct_uint!(U128, 2);
[INFO] [stdout]      | ------------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout]      = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `H256FastMap`
[INFO] [stdout]    --> src/hash/mod.rs:541:1
[INFO] [stdout]     |
[INFO] [stdout] 541 | pub type H256FastMap<T> = Map<H256, T, BuildHasherDefault<PlainHasher>>;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `H256FastSet`
[INFO] [stdout]    --> src/hash/mod.rs:544:1
[INFO] [stdout]     |
[INFO] [stdout] 544 | pub type H256FastSet = Set<H256, BuildHasherDefault<PlainHasher>>;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused arithmetic operation that must be used
[INFO] [stdout]    --> src/uint/tests.rs:334:5
[INFO] [stdout]     |
[INFO] [stdout] 334 | /     U128::from_str("ffffffffffffffffffffffffffffffff").unwrap()
[INFO] [stdout] 335 | |         +
[INFO] [stdout] 336 | |         U128::from_str("ffffffffffffffffffffffffffffffff").unwrap();
[INFO] [stdout]     | |___________________________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:2:29
[INFO] [stdout]     |
[INFO] [stdout] 2   |         unused_comparisons, unused_must_use,
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused arithmetic operation that must be used
[INFO] [stdout]    --> src/uint/tests.rs:370:5
[INFO] [stdout]     |
[INFO] [stdout] 370 | /     U256::from_str("7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff").unwrap()
[INFO] [stdout] 371 | |         *
[INFO] [stdout] 372 | |         U256::from_str("7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff").unwrap();
[INFO] [stdout]     | |___________________________________________________________________________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused arithmetic operation that must be used
[INFO] [stdout]    --> src/uint/tests.rs:389:5
[INFO] [stdout]     |
[INFO] [stdout] 389 | /     U256::from_str("0").unwrap()
[INFO] [stdout] 390 | |         -
[INFO] [stdout] 391 | |         U256::from_str("1").unwrap();
[INFO] [stdout]     | |____________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ethereum-bigint`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "b57ea0fe14983e08a5b7e6cc3e9a3e2bd69ff443f5380c57811848ae558813a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b57ea0fe14983e08a5b7e6cc3e9a3e2bd69ff443f5380c57811848ae558813a2", kill_on_drop: false }`
[INFO] [stdout] b57ea0fe14983e08a5b7e6cc3e9a3e2bd69ff443f5380c57811848ae558813a2
