[INFO] crate emerald-core 0.10.1 is already in cache [INFO] extracting crate emerald-core 0.10.1 into work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/reg/emerald-core/0.10.1 [INFO] extracting crate emerald-core 0.10.1 into work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/reg/emerald-core/0.10.1 [INFO] validating manifest of emerald-core-0.10.1 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 emerald-core-0.10.1 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 emerald-core-0.10.1 [INFO] finished frobbing emerald-core-0.10.1 [INFO] frobbed toml for emerald-core-0.10.1 written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/reg/emerald-core/0.10.1/Cargo.toml [INFO] started frobbing emerald-core-0.10.1 [INFO] finished frobbing emerald-core-0.10.1 [INFO] frobbed toml for emerald-core-0.10.1 written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/reg/emerald-core/0.10.1/Cargo.toml [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] checking emerald-core-0.10.1 against master#60960a260f7b5c695fd0717311d72ce62dd4eb43 for pr-63376 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-6/master#60960a260f7b5c695fd0717311d72ce62dd4eb43:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/reg/emerald-core/0.10.1:/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] 1f35d95ea1080b42745a7447a830d5a1bc88f1729cb078d8841dbbaf6771f041 [INFO] running `"docker" "start" "-a" "1f35d95ea1080b42745a7447a830d5a1bc88f1729cb078d8841dbbaf6771f041"` [INFO] [stderr] Compiling rust-scrypt v0.1.0 [INFO] [stderr] Compiling secp256k1 v0.6.3 [INFO] [stderr] Compiling hidapi v0.4.1 [INFO] [stderr] Checking memchr v0.1.11 [INFO] [stderr] Checking thread-id v2.0.0 [INFO] [stderr] Checking rust-crypto v0.2.36 [INFO] [stderr] Checking uuid v0.5.1 [INFO] [stderr] Checking globset v0.1.4 [INFO] [stderr] Checking jsonrpc-core v7.1.1 [INFO] [stderr] Checking thread_local v0.2.7 [INFO] [stderr] Checking hyper-native-tls v0.2.4 [INFO] [stderr] Checking aho-corasick v0.5.3 [INFO] [stderr] Checking tokio-threadpool v0.1.15 [INFO] [stderr] Checking serde v0.6.15 [INFO] [stderr] Checking reqwest v0.6.2 [INFO] [stderr] Checking regex v0.1.80 [INFO] [stderr] Checking tokio-fs v0.1.6 [INFO] [stderr] Checking tokio v0.1.22 [INFO] [stderr] Checking tokio-core v0.1.17 [INFO] [stderr] Checking env_logger v0.3.5 [INFO] [stderr] Checking serde_json v0.6.1 [INFO] [stderr] Checking quickcheck v0.4.1 [INFO] [stderr] Checking tokio-proto v0.1.1 [INFO] [stderr] Checking jsonrpc-server-utils v7.1.1 [INFO] [stderr] Checking hyper v0.11.27 [INFO] [stderr] Checking jsonrpc-http-server v7.1.1 [INFO] [stderr] Checking emerald-core v0.10.1 (/opt/crater/workdir) [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/core/error.rs:53:32 [INFO] [stderr] | [INFO] [stderr] 53 | fn cause(&self) -> Option<&error::Error> { [INFO] [stderr] | ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/keystore/error.rs:60:32 [INFO] [stderr] | [INFO] [stderr] 60 | fn cause(&self) -> Option<&error::Error> { [INFO] [stderr] | ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/keystore/serialize/error.rs:81:32 [INFO] [stderr] | [INFO] [stderr] 81 | fn cause(&self) -> Option<&error::Error> { [INFO] [stderr] | ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/rpc/error.rs:98:32 [INFO] [stderr] | [INFO] [stderr] 98 | fn cause(&self) -> Option<&error::Error> { [INFO] [stderr] | ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/hdwallet/error.rs:49:32 [INFO] [stderr] | [INFO] [stderr] 49 | fn cause(&self) -> Option<&error::Error> { [INFO] [stderr] | ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error` [INFO] [stderr] [INFO] [stderr] warning: `...` range patterns are deprecated [INFO] [stderr] --> src/hdwallet/mod.rs:225:14 [INFO] [stderr] | [INFO] [stderr] 225 | 0...CHUNK_SIZE => (tr, _mock.as_slice()), [INFO] [stderr] | ^^^ help: use `..=` for an inclusive range [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default [INFO] [stderr] [INFO] [stderr] warning: `...` range patterns are deprecated [INFO] [stderr] --> src/util/rlp.rs:46:18 [INFO] [stderr] | [INFO] [stderr] 46 | s @ 0...55 => { [INFO] [stderr] | ^^^ help: use `..=` for an inclusive range [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/core/error.rs:53:32 [INFO] [stderr] | [INFO] [stderr] 53 | fn cause(&self) -> Option<&error::Error> { [INFO] [stderr] | ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/keystore/error.rs:60:32 [INFO] [stderr] | [INFO] [stderr] 60 | fn cause(&self) -> Option<&error::Error> { [INFO] [stderr] | ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/keystore/serialize/error.rs:81:32 [INFO] [stderr] | [INFO] [stderr] 81 | fn cause(&self) -> Option<&error::Error> { [INFO] [stderr] | ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/rpc/error.rs:98:32 [INFO] [stderr] | [INFO] [stderr] 98 | fn cause(&self) -> Option<&error::Error> { [INFO] [stderr] | ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error` [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/hdwallet/error.rs:49:32 [INFO] [stderr] | [INFO] [stderr] 49 | fn cause(&self) -> Option<&error::Error> { [INFO] [stderr] | ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error` [INFO] [stderr] [INFO] [stderr] warning: `...` range patterns are deprecated [INFO] [stderr] --> src/hdwallet/mod.rs:225:14 [INFO] [stderr] | [INFO] [stderr] 225 | 0...CHUNK_SIZE => (tr, _mock.as_slice()), [INFO] [stderr] | ^^^ help: use `..=` for an inclusive range [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default [INFO] [stderr] [INFO] [stderr] warning: `...` range patterns are deprecated [INFO] [stderr] --> src/util/rlp.rs:46:18 [INFO] [stderr] | [INFO] [stderr] 46 | s @ 0...55 => { [INFO] [stderr] | ^^^ help: use `..=` for an inclusive range [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred [INFO] [stderr] --> src/core/signature.rs:18:1 [INFO] [stderr] | [INFO] [stderr] 18 | / lazy_static! { [INFO] [stderr] 19 | | static ref ECDSA: Secp256k1 = Secp256k1::with_caps(ContextFlag::SignOnly); [INFO] [stderr] 20 | | } [INFO] [stderr] | |_^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(deprecated)]` on by default [INFO] [stderr] = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred [INFO] [stderr] --> src/keystore/serialize/address.rs:24:5 [INFO] [stderr] | [INFO] [stderr] 24 | / lazy_static! { [INFO] [stderr] 25 | | static ref ADDR_RE: Regex = Regex::new(r#"address.+?([a-fA-F0-9]{40})"#).unwrap(); [INFO] [stderr] 26 | | } [INFO] [stderr] | |_____^ [INFO] [stderr] | [INFO] [stderr] = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'std::env::home_dir': This function's behavior is unexpected and probably not what you want. Consider using the home_dir function from https://crates.io/crates/dirs instead. [INFO] [stderr] --> src/storage.rs:18:26 [INFO] [stderr] | [INFO] [stderr] 18 | let mut config_dir = env::home_dir().expect("Expect path to home dir"); [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred [INFO] [stderr] --> src/hdwallet/mod.rs:89:5 [INFO] [stderr] | [INFO] [stderr] 89 | / lazy_static! { [INFO] [stderr] 90 | | static ref INVALID_PATH_RE: Regex = Regex::new(r#"[^0-9'/]"#).unwrap(); [INFO] [stderr] 91 | | } [INFO] [stderr] | |_____^ [INFO] [stderr] | [INFO] [stderr] = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred [INFO] [stderr] --> src/core/signature.rs:18:1 [INFO] [stderr] | [INFO] [stderr] 18 | / lazy_static! { [INFO] [stderr] 19 | | static ref ECDSA: Secp256k1 = Secp256k1::with_caps(ContextFlag::SignOnly); [INFO] [stderr] 20 | | } [INFO] [stderr] | |_^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(deprecated)]` on by default [INFO] [stderr] = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred [INFO] [stderr] --> src/keystore/serialize/address.rs:24:5 [INFO] [stderr] | [INFO] [stderr] 24 | / lazy_static! { [INFO] [stderr] 25 | | static ref ADDR_RE: Regex = Regex::new(r#"address.+?([a-fA-F0-9]{40})"#).unwrap(); [INFO] [stderr] 26 | | } [INFO] [stderr] | |_____^ [INFO] [stderr] | [INFO] [stderr] = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'std::env::home_dir': This function's behavior is unexpected and probably not what you want. Consider using the home_dir function from https://crates.io/crates/dirs instead. [INFO] [stderr] --> src/storage.rs:18:26 [INFO] [stderr] | [INFO] [stderr] 18 | let mut config_dir = env::home_dir().expect("Expect path to home dir"); [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred [INFO] [stderr] --> src/hdwallet/mod.rs:89:5 [INFO] [stderr] | [INFO] [stderr] 89 | / lazy_static! { [INFO] [stderr] 90 | | static ref INVALID_PATH_RE: Regex = Regex::new(r#"[^0-9'/]"#).unwrap(); [INFO] [stderr] 91 | | } [INFO] [stderr] | |_____^ [INFO] [stderr] | [INFO] [stderr] = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: `#[derive]` can't be used on a `#[repr(packed)]` struct that does not derive Copy (error E0133) [INFO] [stderr] --> src/hdwallet/apdu.rs:9:10 [INFO] [stderr] | [INFO] [stderr] 9 | #[derive(Debug, Clone)] [INFO] [stderr] | ^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(safe_packed_borrows)]` on by default [INFO] [stderr] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stderr] = note: for more information, see issue #46043 [INFO] [stderr] [INFO] [stderr] warning: `#[derive]` can't be used on a `#[repr(packed)]` struct that does not derive Copy (error E0133) [INFO] [stderr] --> src/hdwallet/apdu.rs:9:17 [INFO] [stderr] | [INFO] [stderr] 9 | #[derive(Debug, Clone)] [INFO] [stderr] | ^^^^^ [INFO] [stderr] | [INFO] [stderr] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stderr] = note: for more information, see issue #46043 [INFO] [stderr] [INFO] [stderr] warning: borrow of packed field is unsafe and requires unsafe function or block (error E0133) [INFO] [stderr] --> src/hdwallet/apdu.rs:45:9 [INFO] [stderr] | [INFO] [stderr] 45 | self.data.len() + APDU_HEADER_SIZE [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stderr] = note: for more information, see issue #46043 [INFO] [stderr] = note: fields of packed structs might be misaligned: dereferencing a misaligned pointer or even just creating a misaligned reference is undefined behavior [INFO] [stderr] [INFO] [stderr] warning: borrow of packed field is unsafe and requires unsafe function or block (error E0133) [INFO] [stderr] --> src/hdwallet/apdu.rs:78:9 [INFO] [stderr] | [INFO] [stderr] 78 | self.apdu.data.extend_from_slice(data); [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stderr] = note: for more information, see issue #46043 [INFO] [stderr] = note: fields of packed structs might be misaligned: dereferencing a misaligned pointer or even just creating a misaligned reference is undefined behavior [INFO] [stderr] [INFO] [stderr] warning: borrow of packed field is unsafe and requires unsafe function or block (error E0133) [INFO] [stderr] --> src/hdwallet/comm.rs:96:24 [INFO] [stderr] | [INFO] [stderr] 96 | let mut data_itr = apdu.data.iter(); [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stderr] = note: for more information, see issue #46043 [INFO] [stderr] = note: fields of packed structs might be misaligned: dereferencing a misaligned pointer or even just creating a misaligned reference is undefined behavior [INFO] [stderr] [INFO] [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used [INFO] [stderr] --> src/hdwallet/mod.rs:121:9 [INFO] [stderr] | [INFO] [stderr] 121 | hd_str.split("/").map(parse).collect::>(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead [INFO] [stderr] [INFO] [stderr] warning: `#[derive]` can't be used on a `#[repr(packed)]` struct that does not derive Copy (error E0133) [INFO] [stderr] --> src/hdwallet/apdu.rs:9:10 [INFO] [stderr] | [INFO] [stderr] 9 | #[derive(Debug, Clone)] [INFO] [stderr] | ^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(safe_packed_borrows)]` on by default [INFO] [stderr] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stderr] = note: for more information, see issue #46043 [INFO] [stderr] [INFO] [stderr] warning: `#[derive]` can't be used on a `#[repr(packed)]` struct that does not derive Copy (error E0133) [INFO] [stderr] --> src/hdwallet/apdu.rs:9:17 [INFO] [stderr] | [INFO] [stderr] 9 | #[derive(Debug, Clone)] [INFO] [stderr] | ^^^^^ [INFO] [stderr] | [INFO] [stderr] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stderr] = note: for more information, see issue #46043 [INFO] [stderr] [INFO] [stderr] warning: borrow of packed field is unsafe and requires unsafe function or block (error E0133) [INFO] [stderr] --> src/hdwallet/apdu.rs:45:9 [INFO] [stderr] | [INFO] [stderr] 45 | self.data.len() + APDU_HEADER_SIZE [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stderr] = note: for more information, see issue #46043 [INFO] [stderr] = note: fields of packed structs might be misaligned: dereferencing a misaligned pointer or even just creating a misaligned reference is undefined behavior [INFO] [stderr] [INFO] [stderr] warning: borrow of packed field is unsafe and requires unsafe function or block (error E0133) [INFO] [stderr] --> src/hdwallet/apdu.rs:78:9 [INFO] [stderr] | [INFO] [stderr] 78 | self.apdu.data.extend_from_slice(data); [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stderr] = note: for more information, see issue #46043 [INFO] [stderr] = note: fields of packed structs might be misaligned: dereferencing a misaligned pointer or even just creating a misaligned reference is undefined behavior [INFO] [stderr] [INFO] [stderr] warning: borrow of packed field is unsafe and requires unsafe function or block (error E0133) [INFO] [stderr] --> src/hdwallet/comm.rs:96:24 [INFO] [stderr] | [INFO] [stderr] 96 | let mut data_itr = apdu.data.iter(); [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stderr] = note: for more information, see issue #46043 [INFO] [stderr] = note: fields of packed structs might be misaligned: dereferencing a misaligned pointer or even just creating a misaligned reference is undefined behavior [INFO] [stderr] [INFO] [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used [INFO] [stderr] --> src/hdwallet/mod.rs:121:9 [INFO] [stderr] | [INFO] [stderr] 121 | hd_str.split("/").map(parse).collect::>(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead [INFO] [stderr] [INFO] [stderr] warning: unused import: `rustc_serialize::json` [INFO] [stderr] --> benches/crypto_benches.rs:12:5 [INFO] [stderr] | [INFO] [stderr] 12 | use rustc_serialize::json; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 45.09s [INFO] running `"docker" "inspect" "1f35d95ea1080b42745a7447a830d5a1bc88f1729cb078d8841dbbaf6771f041"` [INFO] running `"docker" "rm" "-f" "1f35d95ea1080b42745a7447a830d5a1bc88f1729cb078d8841dbbaf6771f041"` [INFO] [stdout] 1f35d95ea1080b42745a7447a830d5a1bc88f1729cb078d8841dbbaf6771f041