[INFO] fetching crate microsalt 0.2.21...
[INFO] checking microsalt-0.2.21 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate microsalt 0.2.21 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate microsalt 0.2.21 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate microsalt 0.2.21
[INFO] finished tweaking crates.io crate microsalt 0.2.21
[INFO] tweaked toml for crates.io crate microsalt 0.2.21 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 20 packages
[INFO] [stderr]       Adding index-fixed v0.0.2 (latest: v0.3.1)
[INFO] [stderr]       Adding memsec v0.3.4 (latest: v0.6.3)
[INFO] [stderr]       Adding rand v0.3.23 (latest: v0.8.5)
[INFO] [stderr]       Adding rand v0.4.6 (latest: v0.8.5)
[INFO] [stderr]       Adding rand_core v0.3.1 (latest: v0.6.4)
[INFO] [stderr]       Adding rand_core v0.4.2 (latest: v0.6.4)
[INFO] [stderr]       Adding rdrand v0.4.0 (latest: v0.8.3)
[INFO] [stderr]       Adding serde v0.9.15 (latest: v1.0.197)
[INFO] [stderr]       Adding unwrap v1.1.0 (latest: v1.2.1)
[INFO] [stderr]       Adding winapi v0.2.8 (latest: v0.3.9)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded index-fixed v0.0.2
[INFO] [stderr]   Downloaded unwrap v1.1.0
[INFO] [stderr]   Downloaded mach_o_sys v0.1.1
[INFO] [stderr]   Downloaded memsec v0.3.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a7c9107cf7f95c2764e574e2d16b70c08bc340ef73a5802e71e0636e8a7329bf
[INFO] running `Command { std: "docker" "start" "-a" "a7c9107cf7f95c2764e574e2d16b70c08bc340ef73a5802e71e0636e8a7329bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a7c9107cf7f95c2764e574e2d16b70c08bc340ef73a5802e71e0636e8a7329bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7c9107cf7f95c2764e574e2d16b70c08bc340ef73a5802e71e0636e8a7329bf", kill_on_drop: false }`
[INFO] [stdout] a7c9107cf7f95c2764e574e2d16b70c08bc340ef73a5802e71e0636e8a7329bf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 58115b8011474ff955d1b1f3159ba29d5c8be7104d426fe88d77cae340e7029f
[INFO] running `Command { std: "docker" "start" "-a" "58115b8011474ff955d1b1f3159ba29d5c8be7104d426fe88d77cae340e7029f", kill_on_drop: false }`
[INFO] [stderr]    Compiling memsec v0.3.4
[INFO] [stderr]     Checking index-fixed v0.0.2
[INFO] [stderr]     Checking rustc-serialize v0.3.25
[INFO] [stderr]     Checking serde v0.9.15
[INFO] [stderr]     Checking unwrap v1.1.0
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking microsalt v0.2.21 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]   --> src/lib.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/hash/mod.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | /// A hash
[INFO] [stdout]    | ^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stdout]    |
[INFO] [stdout]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Hash`, `Hasher`
[INFO] [stdout]  --> src/hash/mod.rs:8:17
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::hash::{Hash, Hasher};
[INFO] [stdout]   |                 ^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/newtype_macros.rs:66:50
[INFO] [stdout]    |
[INFO] [stdout] 66 |   ...                   if let Some(value) = try!(visitor.visit()) {
[INFO] [stdout]    |                                              ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/hash/mod.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | / new_type! {
[INFO] [stdout] 17 | |     /// Digest-structure
[INFO] [stdout] 18 | |     public HashType(LENGTH);
[INFO] [stdout] 19 | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `newtype_traits` which comes from the expansion of the macro `new_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `memsec` is imported redundantly
[INFO] [stdout]    --> src/shared.rs:201:5
[INFO] [stdout]     |
[INFO] [stdout] 201 | use memsec;
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:30:1
[INFO] [stdout]     |
[INFO] [stdout] 30  | extern crate memsec;
[INFO] [stdout]     | -------------------- the item `memsec` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cmp`
[INFO] [stdout]    --> src/shared.rs:202:11
[INFO] [stdout]     |
[INFO] [stdout] 202 | use std::{cmp, mem};
[INFO] [stdout]     |           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/sign/mod.rs:29:1
[INFO] [stdout]    |
[INFO] [stdout] 29 | / ///A Pubic key for crypto box
[INFO] [stdout] 30 | | //pub type PublicKey = [u8; PUBLIC_KEY_BYTES];
[INFO] [stdout] 31 | | ///A secret key for crypto box
[INFO] [stdout]    | |_-----------------------------^
[INFO] [stdout]    |   |
[INFO] [stdout]    |   rustdoc does not generate documentation for macro invocations
[INFO] [stdout]    |
[INFO] [stdout]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `std` is imported redundantly
[INFO] [stdout]  --> src/sign/mod.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std;
[INFO] [stdout]   |     ^^^ the item `std` is already imported by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `shared`
[INFO] [stdout]  --> src/sign/mod.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use shared;
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/newtype_macros.rs:66:50
[INFO] [stdout]    |
[INFO] [stdout] 66 |   ...                   if let Some(value) = try!(visitor.visit()) {
[INFO] [stdout]    |                                              ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/sign/mod.rs:34:1
[INFO] [stdout]    |
[INFO] [stdout] 34 | / new_type! {
[INFO] [stdout] 35 | |     /// `SecretKey` for signatures
[INFO] [stdout] 36 | |     ///
[INFO] [stdout] 37 | |     /// When a `SecretKey` goes out of scope its contents
[INFO] [stdout] 38 | |     /// will be zeroed out
[INFO] [stdout] 39 | |     secret SecretKey(SECRET_KEY_BYTES);
[INFO] [stdout] 40 | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `newtype_traits` which comes from the expansion of the macro `new_type` (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/newtype_macros.rs:66:50
[INFO] [stdout]    |
[INFO] [stdout] 66 |   ...                   if let Some(value) = try!(visitor.visit()) {
[INFO] [stdout]    |                                              ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/sign/mod.rs:42:1
[INFO] [stdout]    |
[INFO] [stdout] 42 | / new_type! {
[INFO] [stdout] 43 | |     /// `PublicKey` for signatures
[INFO] [stdout] 44 | |     public PublicKey(PUBLIC_KEY_BYTES);
[INFO] [stdout] 45 | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `newtype_traits` which comes from the expansion of the macro `new_type` (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/newtype_macros.rs:66:50
[INFO] [stdout]    |
[INFO] [stdout] 66 |   ...                   if let Some(value) = try!(visitor.visit()) {
[INFO] [stdout]    |                                              ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/sign/mod.rs:47:1
[INFO] [stdout]    |
[INFO] [stdout] 47 | / new_type! {
[INFO] [stdout] 48 | |     /// Detached signature
[INFO] [stdout] 49 | |     public Signature(SIGNATURE_LENGTH);
[INFO] [stdout] 50 | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `newtype_traits` which comes from the expansion of the macro `new_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `shared`
[INFO] [stdout]   --> src/secretbox/mod.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | use shared;
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `shared`
[INFO] [stdout]  --> src/boxy/mod.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use shared;
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/hash/mod.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | /// A hash
[INFO] [stdout]    | ^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stdout]    |
[INFO] [stdout]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Hash`, `Hasher`
[INFO] [stdout]  --> src/hash/mod.rs:8:17
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::hash::{Hash, Hasher};
[INFO] [stdout]   |                 ^^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/newtype_macros.rs:66:50
[INFO] [stdout]    |
[INFO] [stdout] 66 |   ...                   if let Some(value) = try!(visitor.visit()) {
[INFO] [stdout]    |                                              ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/hash/mod.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | / new_type! {
[INFO] [stdout] 17 | |     /// Digest-structure
[INFO] [stdout] 18 | |     public HashType(LENGTH);
[INFO] [stdout] 19 | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `newtype_traits` which comes from the expansion of the macro `new_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `memsec` is imported redundantly
[INFO] [stdout]    --> src/shared.rs:201:5
[INFO] [stdout]     |
[INFO] [stdout] 201 | use memsec;
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:30:1
[INFO] [stdout]     |
[INFO] [stdout] 30  | extern crate memsec;
[INFO] [stdout]     | -------------------- the item `memsec` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cmp`
[INFO] [stdout]    --> src/shared.rs:202:11
[INFO] [stdout]     |
[INFO] [stdout] 202 | use std::{cmp, mem};
[INFO] [stdout]     |           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/sign/mod.rs:29:1
[INFO] [stdout]    |
[INFO] [stdout] 29 | / ///A Pubic key for crypto box
[INFO] [stdout] 30 | | //pub type PublicKey = [u8; PUBLIC_KEY_BYTES];
[INFO] [stdout] 31 | | ///A secret key for crypto box
[INFO] [stdout]    | |_-----------------------------^
[INFO] [stdout]    |   |
[INFO] [stdout]    |   rustdoc does not generate documentation for macro invocations
[INFO] [stdout]    |
[INFO] [stdout]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `std` is imported redundantly
[INFO] [stdout]  --> src/sign/mod.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std;
[INFO] [stdout]   |     ^^^ the item `std` is already imported by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/newtype_macros.rs:66:50
[INFO] [stdout]    |
[INFO] [stdout] 66 |   ...                   if let Some(value) = try!(visitor.visit()) {
[INFO] [stdout]    |                                              ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/sign/mod.rs:34:1
[INFO] [stdout]    |
[INFO] [stdout] 34 | / new_type! {
[INFO] [stdout] 35 | |     /// `SecretKey` for signatures
[INFO] [stdout] 36 | |     ///
[INFO] [stdout] 37 | |     /// When a `SecretKey` goes out of scope its contents
[INFO] [stdout] 38 | |     /// will be zeroed out
[INFO] [stdout] 39 | |     secret SecretKey(SECRET_KEY_BYTES);
[INFO] [stdout] 40 | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `newtype_traits` which comes from the expansion of the macro `new_type` (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/newtype_macros.rs:66:50
[INFO] [stdout]    |
[INFO] [stdout] 66 |   ...                   if let Some(value) = try!(visitor.visit()) {
[INFO] [stdout]    |                                              ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/sign/mod.rs:42:1
[INFO] [stdout]    |
[INFO] [stdout] 42 | / new_type! {
[INFO] [stdout] 43 | |     /// `PublicKey` for signatures
[INFO] [stdout] 44 | |     public PublicKey(PUBLIC_KEY_BYTES);
[INFO] [stdout] 45 | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `newtype_traits` which comes from the expansion of the macro `new_type` (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/newtype_macros.rs:66:50
[INFO] [stdout]    |
[INFO] [stdout] 66 |   ...                   if let Some(value) = try!(visitor.visit()) {
[INFO] [stdout]    |                                              ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/sign/mod.rs:47:1
[INFO] [stdout]    |
[INFO] [stdout] 47 | / new_type! {
[INFO] [stdout] 48 | |     /// Detached signature
[INFO] [stdout] 49 | |     public Signature(SIGNATURE_LENGTH);
[INFO] [stdout] 50 | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `newtype_traits` which comes from the expansion of the macro `new_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `shared`
[INFO] [stdout]  --> src/boxy/mod.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use shared;
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/hash/sha512.rs:137:9
[INFO] [stdout]     |
[INFO] [stdout] 137 |     let mut x = &mut x[..new_len];
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/sign/ed25519.rs:396:16
[INFO] [stdout]     |
[INFO] [stdout] 396 |     let (init, mut rest) = r.split_at_mut(3);
[INFO] [stdout]     |                ----^^^^
[INFO] [stdout]     |                |
[INFO] [stdout]     |                help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `random_data_test_helper` is never used
[INFO] [stdout]    --> src/shared.rs:150:8
[INFO] [stdout]     |
[INFO] [stdout] 150 | pub fn random_data_test_helper(len: usize) -> Vec<u8> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SIGN_BYTES` is never used
[INFO] [stdout]   --> src/sign/ed25519.rs:20:11
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub const SIGN_BYTES: usize = 64;
[INFO] [stdout]    |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/secretbox/mod.rs:100:5
[INFO] [stdout]     |
[INFO] [stdout] 100 |     xsalsa20poly1305::secretbox(&mut cipher, &m, &nonce, &key.0);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 100 |     let _ = xsalsa20poly1305::secretbox(&mut cipher, &m, &nonce, &key.0);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/boxy/mod.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |         curve25519xsalsa20poly1305::box_(&mut cipher, &m, &nonce, &pk.0, &sk.0);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let _ = curve25519xsalsa20poly1305::box_(&mut cipher, &m, &nonce, &pk.0, &sk.0);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/hash/sha512.rs:137:9
[INFO] [stdout]     |
[INFO] [stdout] 137 |     let mut x = &mut x[..new_len];
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/sign/ed25519.rs:396:16
[INFO] [stdout]     |
[INFO] [stdout] 396 |     let (init, mut rest) = r.split_at_mut(3);
[INFO] [stdout]     |                ----^^^^
[INFO] [stdout]     |                |
[INFO] [stdout]     |                help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/sign/mod.rs:261:13
[INFO] [stdout]     |
[INFO] [stdout] 261 |         let mut sig = key.sign(&message);
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SIGN_BYTES` is never used
[INFO] [stdout]   --> src/sign/ed25519.rs:20:11
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub const SIGN_BYTES: usize = 64;
[INFO] [stdout]    |           ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/secretbox/mod.rs:100:5
[INFO] [stdout]     |
[INFO] [stdout] 100 |     xsalsa20poly1305::secretbox(&mut cipher, &m, &nonce, &key.0);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 100 |     let _ = xsalsa20poly1305::secretbox(&mut cipher, &m, &nonce, &key.0);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/boxy/mod.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |         curve25519xsalsa20poly1305::box_(&mut cipher, &m, &nonce, &pk.0, &sk.0);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let _ = curve25519xsalsa20poly1305::box_(&mut cipher, &m, &nonce, &pk.0, &sk.0);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.15s
[INFO] running `Command { std: "docker" "inspect" "58115b8011474ff955d1b1f3159ba29d5c8be7104d426fe88d77cae340e7029f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58115b8011474ff955d1b1f3159ba29d5c8be7104d426fe88d77cae340e7029f", kill_on_drop: false }`
[INFO] [stdout] 58115b8011474ff955d1b1f3159ba29d5c8be7104d426fe88d77cae340e7029f
[INFO] checking microsalt-0.2.21 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate microsalt 0.2.21 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate microsalt 0.2.21 on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate microsalt 0.2.21
[INFO] finished tweaking crates.io crate microsalt 0.2.21
[INFO] tweaked toml for crates.io crate microsalt 0.2.21 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 65f2a3065a3e0b228f0d5250c96d8bc69d7711eb948bdf4aecc03b29a84d3d59
[INFO] running `Command { std: "docker" "start" "-a" "65f2a3065a3e0b228f0d5250c96d8bc69d7711eb948bdf4aecc03b29a84d3d59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "65f2a3065a3e0b228f0d5250c96d8bc69d7711eb948bdf4aecc03b29a84d3d59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65f2a3065a3e0b228f0d5250c96d8bc69d7711eb948bdf4aecc03b29a84d3d59", kill_on_drop: false }`
[INFO] [stdout] 65f2a3065a3e0b228f0d5250c96d8bc69d7711eb948bdf4aecc03b29a84d3d59
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b1cd1a29b60c82874de6cc5186e38deea1294fc91e154afa532ad3dba4d7897e
[INFO] running `Command { std: "docker" "start" "-a" "b1cd1a29b60c82874de6cc5186e38deea1294fc91e154afa532ad3dba4d7897e", kill_on_drop: false }`
[INFO] [stderr]    Compiling memsec v0.3.4
[INFO] [stderr]     Checking index-fixed v0.0.2
[INFO] [stderr]     Checking rustc-serialize v0.3.25
[INFO] [stderr]     Checking unwrap v1.1.0
[INFO] [stderr]     Checking serde v0.9.15
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking microsalt v0.2.21 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]   --> src/lib.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/hash/mod.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | /// A hash
[INFO] [stdout]    | ^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stdout]    |
[INFO] [stdout]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/hash/mod.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | /// A hash
[INFO] [stdout]    | ^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stdout]    |
[INFO] [stdout]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Hash`, `Hasher`
[INFO] [stdout]  --> src/hash/mod.rs:8:17
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::hash::{Hash, Hasher};
[INFO] [stdout]   |                 ^^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Hash`, `Hasher`
[INFO] [stdout]  --> src/hash/mod.rs:8:17
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::hash::{Hash, Hasher};
[INFO] [stdout]   |                 ^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/newtype_macros.rs:66:50
[INFO] [stdout]    |
[INFO] [stdout] 66 |   ...                   if let Some(value) = try!(visitor.visit()) {
[INFO] [stdout]    |                                              ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/hash/mod.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | / new_type! {
[INFO] [stdout] 17 | |     /// Digest-structure
[INFO] [stdout] 18 | |     public HashType(LENGTH);
[INFO] [stdout] 19 | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `newtype_traits` which comes from the expansion of the macro `new_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `memsec` is imported redundantly
[INFO] [stdout]    --> src/shared.rs:201:5
[INFO] [stdout]     |
[INFO] [stdout] 201 | use memsec;
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:30:1
[INFO] [stdout]     |
[INFO] [stdout] 30  | extern crate memsec;
[INFO] [stdout]     | -------------------- the item `memsec` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cmp`
[INFO] [stdout]    --> src/shared.rs:202:11
[INFO] [stdout]     |
[INFO] [stdout] 202 | use std::{cmp, mem};
[INFO] [stdout]     |           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/sign/mod.rs:29:1
[INFO] [stdout]    |
[INFO] [stdout] 29 | / ///A Pubic key for crypto box
[INFO] [stdout] 30 | | //pub type PublicKey = [u8; PUBLIC_KEY_BYTES];
[INFO] [stdout] 31 | | ///A secret key for crypto box
[INFO] [stdout]    | |_-----------------------------^
[INFO] [stdout]    |   |
[INFO] [stdout]    |   rustdoc does not generate documentation for macro invocations
[INFO] [stdout]    |
[INFO] [stdout]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/newtype_macros.rs:66:50
[INFO] [stdout]    |
[INFO] [stdout] 66 |   ...                   if let Some(value) = try!(visitor.visit()) {
[INFO] [stdout]    |                                              ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/hash/mod.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | / new_type! {
[INFO] [stdout] 17 | |     /// Digest-structure
[INFO] [stdout] 18 | |     public HashType(LENGTH);
[INFO] [stdout] 19 | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `newtype_traits` which comes from the expansion of the macro `new_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `std` is imported redundantly
[INFO] [stdout]  --> src/sign/mod.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std;
[INFO] [stdout]   |     ^^^ the item `std` is already imported by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `memsec` is imported redundantly
[INFO] [stdout]    --> src/shared.rs:201:5
[INFO] [stdout]     |
[INFO] [stdout] 201 | use memsec;
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:30:1
[INFO] [stdout]     |
[INFO] [stdout] 30  | extern crate memsec;
[INFO] [stdout]     | -------------------- the item `memsec` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cmp`
[INFO] [stdout]    --> src/shared.rs:202:11
[INFO] [stdout]     |
[INFO] [stdout] 202 | use std::{cmp, mem};
[INFO] [stdout]     |           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/newtype_macros.rs:66:50
[INFO] [stdout]    |
[INFO] [stdout] 66 |   ...                   if let Some(value) = try!(visitor.visit()) {
[INFO] [stdout]    |                                              ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/sign/mod.rs:34:1
[INFO] [stdout]    |
[INFO] [stdout] 34 | / new_type! {
[INFO] [stdout] 35 | |     /// `SecretKey` for signatures
[INFO] [stdout] 36 | |     ///
[INFO] [stdout] 37 | |     /// When a `SecretKey` goes out of scope its contents
[INFO] [stdout] 38 | |     /// will be zeroed out
[INFO] [stdout] 39 | |     secret SecretKey(SECRET_KEY_BYTES);
[INFO] [stdout] 40 | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `newtype_traits` which comes from the expansion of the macro `new_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/sign/mod.rs:29:1
[INFO] [stdout]    |
[INFO] [stdout] 29 | / ///A Pubic key for crypto box
[INFO] [stdout] 30 | | //pub type PublicKey = [u8; PUBLIC_KEY_BYTES];
[INFO] [stdout] 31 | | ///A secret key for crypto box
[INFO] [stdout]    | |_-----------------------------^
[INFO] [stdout]    |   |
[INFO] [stdout]    |   rustdoc does not generate documentation for macro invocations
[INFO] [stdout]    |
[INFO] [stdout]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `std` is imported redundantly
[INFO] [stdout]  --> src/sign/mod.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std;
[INFO] [stdout]   |     ^^^ the item `std` is already imported by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `shared`
[INFO] [stdout]  --> src/sign/mod.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use shared;
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/newtype_macros.rs:66:50
[INFO] [stdout]    |
[INFO] [stdout] 66 |   ...                   if let Some(value) = try!(visitor.visit()) {
[INFO] [stdout]    |                                              ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/sign/mod.rs:42:1
[INFO] [stdout]    |
[INFO] [stdout] 42 | / new_type! {
[INFO] [stdout] 43 | |     /// `PublicKey` for signatures
[INFO] [stdout] 44 | |     public PublicKey(PUBLIC_KEY_BYTES);
[INFO] [stdout] 45 | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `newtype_traits` which comes from the expansion of the macro `new_type` (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/newtype_macros.rs:66:50
[INFO] [stdout]    |
[INFO] [stdout] 66 |   ...                   if let Some(value) = try!(visitor.visit()) {
[INFO] [stdout]    |                                              ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/sign/mod.rs:34:1
[INFO] [stdout]    |
[INFO] [stdout] 34 | / new_type! {
[INFO] [stdout] 35 | |     /// `SecretKey` for signatures
[INFO] [stdout] 36 | |     ///
[INFO] [stdout] 37 | |     /// When a `SecretKey` goes out of scope its contents
[INFO] [stdout] 38 | |     /// will be zeroed out
[INFO] [stdout] 39 | |     secret SecretKey(SECRET_KEY_BYTES);
[INFO] [stdout] 40 | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `newtype_traits` which comes from the expansion of the macro `new_type` (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/newtype_macros.rs:66:50
[INFO] [stdout]    |
[INFO] [stdout] 66 |   ...                   if let Some(value) = try!(visitor.visit()) {
[INFO] [stdout]    |                                              ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/sign/mod.rs:42:1
[INFO] [stdout]    |
[INFO] [stdout] 42 | / new_type! {
[INFO] [stdout] 43 | |     /// `PublicKey` for signatures
[INFO] [stdout] 44 | |     public PublicKey(PUBLIC_KEY_BYTES);
[INFO] [stdout] 45 | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `newtype_traits` which comes from the expansion of the macro `new_type` (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/newtype_macros.rs:66:50
[INFO] [stdout]    |
[INFO] [stdout] 66 |   ...                   if let Some(value) = try!(visitor.visit()) {
[INFO] [stdout]    |                                              ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/sign/mod.rs:47:1
[INFO] [stdout]    |
[INFO] [stdout] 47 | / new_type! {
[INFO] [stdout] 48 | |     /// Detached signature
[INFO] [stdout] 49 | |     public Signature(SIGNATURE_LENGTH);
[INFO] [stdout] 50 | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `newtype_traits` which comes from the expansion of the macro `new_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `shared`
[INFO] [stdout]  --> src/boxy/mod.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use shared;
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/newtype_macros.rs:66:50
[INFO] [stdout]    |
[INFO] [stdout] 66 |   ...                   if let Some(value) = try!(visitor.visit()) {
[INFO] [stdout]    |                                              ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/sign/mod.rs:47:1
[INFO] [stdout]    |
[INFO] [stdout] 47 | / new_type! {
[INFO] [stdout] 48 | |     /// Detached signature
[INFO] [stdout] 49 | |     public Signature(SIGNATURE_LENGTH);
[INFO] [stdout] 50 | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `newtype_traits` which comes from the expansion of the macro `new_type` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `shared`
[INFO] [stdout]   --> src/secretbox/mod.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | use shared;
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `shared`
[INFO] [stdout]  --> src/boxy/mod.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use shared;
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/hash/sha512.rs:137:9
[INFO] [stdout]     |
[INFO] [stdout] 137 |     let mut x = &mut x[..new_len];
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/sign/ed25519.rs:396:16
[INFO] [stdout]     |
[INFO] [stdout] 396 |     let (init, mut rest) = r.split_at_mut(3);
[INFO] [stdout]     |                ----^^^^
[INFO] [stdout]     |                |
[INFO] [stdout]     |                help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/hash/sha512.rs:137:9
[INFO] [stdout]     |
[INFO] [stdout] 137 |     let mut x = &mut x[..new_len];
[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: function `random_data_test_helper` is never used
[INFO] [stdout]    --> src/shared.rs:150:8
[INFO] [stdout]     |
[INFO] [stdout] 150 | pub fn random_data_test_helper(len: usize) -> Vec<u8> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SIGN_BYTES` is never used
[INFO] [stdout]   --> src/sign/ed25519.rs:20:11
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub const SIGN_BYTES: usize = 64;
[INFO] [stdout]    |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/secretbox/mod.rs:100:5
[INFO] [stdout]     |
[INFO] [stdout] 100 |     xsalsa20poly1305::secretbox(&mut cipher, &m, &nonce, &key.0);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 100 |     let _ = xsalsa20poly1305::secretbox(&mut cipher, &m, &nonce, &key.0);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/boxy/mod.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |         curve25519xsalsa20poly1305::box_(&mut cipher, &m, &nonce, &pk.0, &sk.0);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let _ = curve25519xsalsa20poly1305::box_(&mut cipher, &m, &nonce, &pk.0, &sk.0);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/sign/ed25519.rs:396:16
[INFO] [stdout]     |
[INFO] [stdout] 396 |     let (init, mut rest) = r.split_at_mut(3);
[INFO] [stdout]     |                ----^^^^
[INFO] [stdout]     |                |
[INFO] [stdout]     |                help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/sign/mod.rs:261:13
[INFO] [stdout]     |
[INFO] [stdout] 261 |         let mut sig = key.sign(&message);
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SIGN_BYTES` is never used
[INFO] [stdout]   --> src/sign/ed25519.rs:20:11
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub const SIGN_BYTES: usize = 64;
[INFO] [stdout]    |           ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/secretbox/mod.rs:100:5
[INFO] [stdout]     |
[INFO] [stdout] 100 |     xsalsa20poly1305::secretbox(&mut cipher, &m, &nonce, &key.0);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 100 |     let _ = xsalsa20poly1305::secretbox(&mut cipher, &m, &nonce, &key.0);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/boxy/mod.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |         curve25519xsalsa20poly1305::box_(&mut cipher, &m, &nonce, &pk.0, &sk.0);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let _ = curve25519xsalsa20poly1305::box_(&mut cipher, &m, &nonce, &pk.0, &sk.0);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.96s
[INFO] running `Command { std: "docker" "inspect" "b1cd1a29b60c82874de6cc5186e38deea1294fc91e154afa532ad3dba4d7897e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1cd1a29b60c82874de6cc5186e38deea1294fc91e154afa532ad3dba4d7897e", kill_on_drop: false }`
[INFO] [stdout] b1cd1a29b60c82874de6cc5186e38deea1294fc91e154afa532ad3dba4d7897e