[INFO] fetching crate dark 0.1.0...
[INFO] checking dark-0.1.0 against master#c2f2db79ca3024f68d22b45aa22b570775c2c4ad for pr-124157
[INFO] extracting crate dark 0.1.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate dark 0.1.0 on toolchain c2f2db79ca3024f68d22b45aa22b570775c2c4ad
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dark 0.1.0
[INFO] finished tweaking crates.io crate dark 0.1.0
[INFO] tweaked toml for crates.io crate dark 0.1.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 63 packages to latest compatible versions
[INFO] [stderr]       Adding byteorder v0.4.2 (latest: v1.5.0)
[INFO] [stderr]       Adding compress v0.1.2 (latest: v0.2.1)
[INFO] [stderr]       Adding log v0.3.9 (latest: v0.4.21)
[INFO] [stderr]       Adding num v0.1.42 (latest: v0.4.2)
[INFO] [stderr]       Adding num-bigint v0.1.44 (latest: v0.4.4)
[INFO] [stderr]       Adding num-complex v0.1.43 (latest: v0.4.5)
[INFO] [stderr]       Adding num-rational v0.1.42 (latest: v0.4.1)
[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 wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num v0.1.42
[INFO] [stderr]   Downloaded num-complex v0.1.43
[INFO] [stderr]   Downloaded env_filter v0.1.0
[INFO] [stderr]   Downloaded num-bigint v0.1.44
[INFO] [stderr]   Downloaded byteorder v0.4.2
[INFO] [stderr]   Downloaded num-rational v0.1.42
[INFO] [stderr]   Downloaded env_logger v0.11.3
[INFO] [stderr]   Downloaded compress v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f3d5fac59510ca8f264859150a31b1b68f2a07779ea3cb46f155681dddb3be06
[INFO] running `Command { std: "docker" "start" "-a" "f3d5fac59510ca8f264859150a31b1b68f2a07779ea3cb46f155681dddb3be06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f3d5fac59510ca8f264859150a31b1b68f2a07779ea3cb46f155681dddb3be06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3d5fac59510ca8f264859150a31b1b68f2a07779ea3cb46f155681dddb3be06", kill_on_drop: false }`
[INFO] [stdout] f3d5fac59510ca8f264859150a31b1b68f2a07779ea3cb46f155681dddb3be06
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0db17e60d92140acc633f64ba972aaaa5fd4db1e5e57bfdf8620a0d47e560a09
[INFO] running `Command { std: "docker" "start" "-a" "0db17e60d92140acc633f64ba972aaaa5fd4db1e5e57bfdf8620a0d47e560a09", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]     Checking memchr v2.7.2
[INFO] [stderr]     Checking rustc-serialize v0.3.25
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]     Checking regex-syntax v0.8.3
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking utf8parse v0.2.1
[INFO] [stderr]     Checking anstyle-parse v0.2.3
[INFO] [stderr]     Checking getrandom v0.2.14
[INFO] [stderr]     Checking anstyle-query v1.0.2
[INFO] [stderr]     Checking colorchoice v1.0.0
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[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking aho-corasick v1.1.3
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[INFO] [stderr]     Checking anstream v0.6.13
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking unicode-width v0.1.12
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[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking num-iter v0.1.44
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking compress v0.1.2
[INFO] [stderr]     Checking num v0.4.2
[INFO] [stderr]     Checking regex v1.10.4
[INFO] [stderr]     Checking env_filter v0.1.0
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[INFO] [stderr]     Checking dark v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `log::LogLevel`
[INFO] [stdout]   --> src/saca.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use log::LogLevel;
[INFO] [stdout]    |     ^^^^^^^^^^^^^ no `LogLevel` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/model/exp.rs:35:14
[INFO] [stdout]    |
[INFO] [stdout] 35 |             0...2   => du << FIXED_BASE,
[INFO] [stdout]    |              ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/model/exp.rs:36:14
[INFO] [stdout]    |
[INFO] [stdout] 36 |             3...4   => (3 << FIXED_BASE) + (du&1)*(FIXED_BASE>>1),
[INFO] [stdout]    |              ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/model/exp.rs:37:14
[INFO] [stdout]    |
[INFO] [stdout] 37 |             5...7   => (4 << FIXED_BASE) + ((du-5)%3)*(FIXED_BASE/3),
[INFO] [stdout]    |              ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/model/exp.rs:38:14
[INFO] [stdout]    |
[INFO] [stdout] 38 |             8...12  => (5 << FIXED_BASE) + (du&3)*(FIXED_BASE>>2),
[INFO] [stdout]    |              ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/model/mod.rs:36:40
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn encode<W: io::Write>(&mut self, Distance, &Context, &mut ari::Encoder<W>);
[INFO] [stdout]    |                                        ^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: Distance`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/model/mod.rs:36:50
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn encode<W: io::Write>(&mut self, Distance, &Context, &mut ari::Encoder<W>);
[INFO] [stdout]    |                                                  ^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Context`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/model/mod.rs:36:60
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn encode<W: io::Write>(&mut self, Distance, &Context, &mut ari::Encoder<W>);
[INFO] [stdout]    |                                                            ^^^^^^^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut ari::Encoder<W>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/model/mod.rs:39:39
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn decode<R: io::Read>(&mut self, &Context, &mut ari::Decoder<R>) -> Distance;
[INFO] [stdout]    |                                       ^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Context`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/model/mod.rs:39:49
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn decode<R: io::Read>(&mut self, &Context, &mut ari::Decoder<R>) -> Distance;
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut ari::Decoder<R>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `rand::StdRng`
[INFO] [stdout]   --> src/model/mod.rs:74:21
[INFO] [stdout]    |
[INFO] [stdout] 74 |     use rand::{Rng, StdRng};
[INFO] [stdout]    |                     ^^^^^^ no `StdRng` in the root
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider importing this struct instead:
[INFO] [stdout]            rand::rngs::StdRng
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `log::LogLevel`
[INFO] [stdout]   --> src/saca.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use log::LogLevel;
[INFO] [stdout]    |     ^^^^^^^^^^^^^ no `LogLevel` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/model/exp.rs:35:14
[INFO] [stdout]    |
[INFO] [stdout] 35 |             0...2   => du << FIXED_BASE,
[INFO] [stdout]    |              ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/model/exp.rs:36:14
[INFO] [stdout]    |
[INFO] [stdout] 36 |             3...4   => (3 << FIXED_BASE) + (du&1)*(FIXED_BASE>>1),
[INFO] [stdout]    |              ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/model/exp.rs:37:14
[INFO] [stdout]    |
[INFO] [stdout] 37 |             5...7   => (4 << FIXED_BASE) + ((du-5)%3)*(FIXED_BASE/3),
[INFO] [stdout]    |              ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/model/exp.rs:38:14
[INFO] [stdout]    |
[INFO] [stdout] 38 |             8...12  => (5 << FIXED_BASE) + (du&3)*(FIXED_BASE>>2),
[INFO] [stdout]    |              ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/model/mod.rs:36:40
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn encode<W: io::Write>(&mut self, Distance, &Context, &mut ari::Encoder<W>);
[INFO] [stdout]    |                                        ^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: Distance`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/model/mod.rs:36:50
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn encode<W: io::Write>(&mut self, Distance, &Context, &mut ari::Encoder<W>);
[INFO] [stdout]    |                                                  ^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Context`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/model/mod.rs:36:60
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn encode<W: io::Write>(&mut self, Distance, &Context, &mut ari::Encoder<W>);
[INFO] [stdout]    |                                                            ^^^^^^^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut ari::Encoder<W>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/model/mod.rs:39:39
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn decode<R: io::Read>(&mut self, &Context, &mut ari::Decoder<R>) -> Distance;
[INFO] [stdout]    |                                       ^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Context`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/model/mod.rs:39:49
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn decode<R: io::Read>(&mut self, &Context, &mut ari::Decoder<R>) -> Distance;
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut ari::Decoder<R>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `unwrap` found for unit type `()` in the current scope
[INFO] [stdout]   --> src/main.rs:33:24
[INFO] [stdout]    |
[INFO] [stdout] 33 |     env_logger::init().unwrap();
[INFO] [stdout]    |                        ^^^^^^ method not found in `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `model::DistanceModel`
[INFO] [stdout]   --> src/main.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use model::DistanceModel;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `unwrap` found for unit type `()` in the current scope
[INFO] [stdout]   --> src/main.rs:33:24
[INFO] [stdout]    |
[INFO] [stdout] 33 |     env_logger::init().unwrap();
[INFO] [stdout]    |                        ^^^^^^ method not found in `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `model::DistanceModel`
[INFO] [stdout]   --> src/main.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use model::DistanceModel;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Rng`
[INFO] [stdout]   --> src/model/mod.rs:74:16
[INFO] [stdout]    |
[INFO] [stdout] 74 |     use rand::{Rng, StdRng};
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dark` (bin "dark") due to 3 previous errors; 10 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 3 previous errors; 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dark` (bin "dark" test) due to 4 previous errors; 11 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "0db17e60d92140acc633f64ba972aaaa5fd4db1e5e57bfdf8620a0d47e560a09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0db17e60d92140acc633f64ba972aaaa5fd4db1e5e57bfdf8620a0d47e560a09", kill_on_drop: false }`
[INFO] [stdout] 0db17e60d92140acc633f64ba972aaaa5fd4db1e5e57bfdf8620a0d47e560a09
[INFO] checking dark-0.1.0 against try#9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88 for pr-124157
[INFO] extracting crate dark 0.1.0 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate dark 0.1.0 on toolchain 9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dark 0.1.0
[INFO] finished tweaking crates.io crate dark 0.1.0
[INFO] tweaked toml for crates.io crate dark 0.1.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 63 packages to latest compatible versions
[INFO] [stderr]       Adding byteorder v0.4.2 (latest: v1.5.0)
[INFO] [stderr]       Adding compress v0.1.2 (latest: v0.2.1)
[INFO] [stderr]       Adding log v0.3.9 (latest: v0.4.21)
[INFO] [stderr]       Adding num v0.1.42 (latest: v0.4.2)
[INFO] [stderr]       Adding num-bigint v0.1.44 (latest: v0.4.4)
[INFO] [stderr]       Adding num-complex v0.1.43 (latest: v0.4.5)
[INFO] [stderr]       Adding num-rational v0.1.42 (latest: v0.4.1)
[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 wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d60741e4770afe8566c357fc81cf8ce86dacf07bfd63a2787531ba4f372de8c7
[INFO] running `Command { std: "docker" "start" "-a" "d60741e4770afe8566c357fc81cf8ce86dacf07bfd63a2787531ba4f372de8c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d60741e4770afe8566c357fc81cf8ce86dacf07bfd63a2787531ba4f372de8c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d60741e4770afe8566c357fc81cf8ce86dacf07bfd63a2787531ba4f372de8c7", kill_on_drop: false }`
[INFO] [stdout] d60741e4770afe8566c357fc81cf8ce86dacf07bfd63a2787531ba4f372de8c7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c2dcb798b99c02cb7cea28ddaade420b5c7b122af3f43c8d694f0ecceec094ef
[INFO] running `Command { std: "docker" "start" "-a" "c2dcb798b99c02cb7cea28ddaade420b5c7b122af3f43c8d694f0ecceec094ef", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]     Checking rustc-serialize v0.3.25
[INFO] [stderr]     Checking memchr v2.7.2
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stderr]     Checking regex-syntax v0.8.3
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking utf8parse v0.2.1
[INFO] [stderr]     Checking getrandom v0.2.14
[INFO] [stderr]     Checking anstyle-parse v0.2.3
[INFO] [stderr]     Checking anstyle-query v1.0.2
[INFO] [stderr]     Checking anstyle v1.0.6
[INFO] [stderr]     Checking colorchoice v1.0.0
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking anstream v0.6.13
[INFO] [stderr]     Checking byteorder v0.4.2
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking unicode-width v0.1.12
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking regex-automata v0.4.6
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking num-complex v0.4.5
[INFO] [stderr]     Checking num-iter v0.1.44
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking compress v0.1.2
[INFO] [stderr]     Checking regex v1.10.4
[INFO] [stderr]     Checking num v0.4.2
[INFO] [stderr]     Checking env_filter v0.1.0
[INFO] [stderr]     Checking env_logger v0.11.3
[INFO] [stderr]     Checking dark v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `log::LogLevel`
[INFO] [stdout]   --> src/saca.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use log::LogLevel;
[INFO] [stdout]    |     ^^^^^^^^^^^^^ no `LogLevel` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/model/exp.rs:35:14
[INFO] [stdout]    |
[INFO] [stdout] 35 |             0...2   => du << FIXED_BASE,
[INFO] [stdout]    |              ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/model/exp.rs:36:14
[INFO] [stdout]    |
[INFO] [stdout] 36 |             3...4   => (3 << FIXED_BASE) + (du&1)*(FIXED_BASE>>1),
[INFO] [stdout]    |              ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/model/exp.rs:37:14
[INFO] [stdout]    |
[INFO] [stdout] 37 |             5...7   => (4 << FIXED_BASE) + ((du-5)%3)*(FIXED_BASE/3),
[INFO] [stdout]    |              ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/model/exp.rs:38:14
[INFO] [stdout]    |
[INFO] [stdout] 38 |             8...12  => (5 << FIXED_BASE) + (du&3)*(FIXED_BASE>>2),
[INFO] [stdout]    |              ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/model/mod.rs:36:40
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn encode<W: io::Write>(&mut self, Distance, &Context, &mut ari::Encoder<W>);
[INFO] [stdout]    |                                        ^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: Distance`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/model/mod.rs:36:50
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn encode<W: io::Write>(&mut self, Distance, &Context, &mut ari::Encoder<W>);
[INFO] [stdout]    |                                                  ^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Context`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/model/mod.rs:36:60
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn encode<W: io::Write>(&mut self, Distance, &Context, &mut ari::Encoder<W>);
[INFO] [stdout]    |                                                            ^^^^^^^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut ari::Encoder<W>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/model/mod.rs:39:39
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn decode<R: io::Read>(&mut self, &Context, &mut ari::Decoder<R>) -> Distance;
[INFO] [stdout]    |                                       ^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Context`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/model/mod.rs:39:49
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn decode<R: io::Read>(&mut self, &Context, &mut ari::Decoder<R>) -> Distance;
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut ari::Decoder<R>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `rand::StdRng`
[INFO] [stdout]   --> src/model/mod.rs:74:21
[INFO] [stdout]    |
[INFO] [stdout] 74 |     use rand::{Rng, StdRng};
[INFO] [stdout]    |                     ^^^^^^ no `StdRng` in the root
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider importing this struct instead:
[INFO] [stdout]            rand::rngs::StdRng
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `log::LogLevel`
[INFO] [stdout]   --> src/saca.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use log::LogLevel;
[INFO] [stdout]    |     ^^^^^^^^^^^^^ no `LogLevel` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/model/exp.rs:35:14
[INFO] [stdout]    |
[INFO] [stdout] 35 |             0...2   => du << FIXED_BASE,
[INFO] [stdout]    |              ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/model/exp.rs:36:14
[INFO] [stdout]    |
[INFO] [stdout] 36 |             3...4   => (3 << FIXED_BASE) + (du&1)*(FIXED_BASE>>1),
[INFO] [stdout]    |              ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/model/exp.rs:37:14
[INFO] [stdout]    |
[INFO] [stdout] 37 |             5...7   => (4 << FIXED_BASE) + ((du-5)%3)*(FIXED_BASE/3),
[INFO] [stdout]    |              ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/model/exp.rs:38:14
[INFO] [stdout]    |
[INFO] [stdout] 38 |             8...12  => (5 << FIXED_BASE) + (du&3)*(FIXED_BASE>>2),
[INFO] [stdout]    |              ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/model/mod.rs:36:40
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn encode<W: io::Write>(&mut self, Distance, &Context, &mut ari::Encoder<W>);
[INFO] [stdout]    |                                        ^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: Distance`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/model/mod.rs:36:50
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn encode<W: io::Write>(&mut self, Distance, &Context, &mut ari::Encoder<W>);
[INFO] [stdout]    |                                                  ^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Context`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/model/mod.rs:36:60
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn encode<W: io::Write>(&mut self, Distance, &Context, &mut ari::Encoder<W>);
[INFO] [stdout]    |                                                            ^^^^^^^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut ari::Encoder<W>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/model/mod.rs:39:39
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn decode<R: io::Read>(&mut self, &Context, &mut ari::Decoder<R>) -> Distance;
[INFO] [stdout]    |                                       ^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Context`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/model/mod.rs:39:49
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn decode<R: io::Read>(&mut self, &Context, &mut ari::Decoder<R>) -> Distance;
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut ari::Decoder<R>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `unwrap` found for unit type `()` in the current scope
[INFO] [stdout]   --> src/main.rs:33:24
[INFO] [stdout]    |
[INFO] [stdout] 33 |     env_logger::init().unwrap();
[INFO] [stdout]    |                        ^^^^^^ method not found in `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `model::DistanceModel`
[INFO] [stdout]   --> src/main.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use model::DistanceModel;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `unwrap` found for unit type `()` in the current scope
[INFO] [stdout]   --> src/main.rs:33:24
[INFO] [stdout]    |
[INFO] [stdout] 33 |     env_logger::init().unwrap();
[INFO] [stdout]    |                        ^^^^^^ method not found in `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `model::DistanceModel`
[INFO] [stdout]   --> src/main.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use model::DistanceModel;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Rng`
[INFO] [stdout]   --> src/model/mod.rs:74:16
[INFO] [stdout]    |
[INFO] [stdout] 74 |     use rand::{Rng, StdRng};
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dark` (bin "dark") due to 3 previous errors; 10 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 3 previous errors; 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dark` (bin "dark" test) due to 4 previous errors; 11 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "c2dcb798b99c02cb7cea28ddaade420b5c7b122af3f43c8d694f0ecceec094ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2dcb798b99c02cb7cea28ddaade420b5c7b122af3f43c8d694f0ecceec094ef", kill_on_drop: false }`
[INFO] [stdout] c2dcb798b99c02cb7cea28ddaade420b5c7b122af3f43c8d694f0ecceec094ef
