[INFO] crate iridium 0.0.33 is already in cache
[INFO] checking iridium-0.0.33 against master#209b2be09fcaff937480d1fbbe8b31646e361c7a for pr-70917
[INFO] extracting crate iridium 0.0.33 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate iridium 0.0.33 on toolchain 209b2be09fcaff937480d1fbbe8b31646e361c7a
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate iridium 0.0.33
[INFO] finished tweaking crates.io crate iridium 0.0.33
[INFO] tweaked toml for crates.io crate iridium 0.0.33 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7c36e60753408a384c99429f6a6edb375fadaf9922c758bf21a5a8c9948aebb1
[INFO] running `"docker" "start" "-a" "7c36e60753408a384c99429f6a6edb375fadaf9922c758bf21a5a8c9948aebb1"`
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking criterion v0.2.11
[INFO] [stderr]     Checking iridium v0.0.33 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]  --> src/assembler/comment_parsers.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | /// Looks for a comment start
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macros
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stderr]   = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]  --> src/assembler/comment_parsers.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | /// Examples:
[INFO] [stderr]   | ^^^^^^^^^^^^^ rustdoc does not generate documentation for macros
[INFO] [stderr]   |
[INFO] [stderr]   = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]   --> src/assembler/directive_parsers.rs:40:1
[INFO] [stderr]    |
[INFO] [stderr] 40 | /// Will try to parse out any of the Directive forms
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macros
[INFO] [stderr]    |
[INFO] [stderr]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/assembler/instruction_parsers.rs:235:1
[INFO] [stderr]     |
[INFO] [stderr] 235 | /// Will try to parse out any of the Instruction forms
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macros
[INFO] [stderr]     |
[INFO] [stderr]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]  --> src/assembler/label_parsers.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | /// Looks for a user-defined label, such as `label1:`
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macros
[INFO] [stderr]   |
[INFO] [stderr]   = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]   --> src/assembler/label_parsers.rs:19:1
[INFO] [stderr]    |
[INFO] [stderr] 19 | /// Looks for a user-defined label, such as `label1:`
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macros
[INFO] [stderr]    |
[INFO] [stderr]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]  --> src/assembler/operand_parsers.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | /// Parser for all numbers, which have to be prefaced with `#` in our assembly language:
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macros
[INFO] [stderr]   |
[INFO] [stderr]   = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]  --> src/assembler/operand_parsers.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | /// #100
[INFO] [stderr]   | ^^^^^^^^ rustdoc does not generate documentation for macros
[INFO] [stderr]   |
[INFO] [stderr]   = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]   --> src/assembler/operand_parsers.rs:30:1
[INFO] [stderr]    |
[INFO] [stderr] 30 | /// Parser for all floats, which have to be prefaced with `#` in our assembly language:
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macros
[INFO] [stderr]    |
[INFO] [stderr]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]   --> src/assembler/operand_parsers.rs:31:1
[INFO] [stderr]    |
[INFO] [stderr] 31 | /// #100.0
[INFO] [stderr]    | ^^^^^^^^^^ rustdoc does not generate documentation for macros
[INFO] [stderr]    |
[INFO] [stderr]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `NodeInfo`
[INFO] [stderr]   --> src/cluster/client.rs:11:15
[INFO] [stderr]    |
[INFO] [stderr] 11 | use cluster::{NodeInfo};
[INFO] [stderr]    |               ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `NodeAlias`
[INFO] [stderr]  --> src/cluster/manager.rs:2:15
[INFO] [stderr]   |
[INFO] [stderr] 2 | use cluster::{NodeAlias, NodeInfo};
[INFO] [stderr]   |               ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]   --> src/remote/client.rs:80:25
[INFO] [stderr]    |
[INFO] [stderr] 80 |                     buf.trim_right();
[INFO] [stderr]    |                         ^^^^^^^^^^ help: replace the use of the deprecated item: `trim_end`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `register`
[INFO] [stderr]    --> src/assembler/mod.rs:132:21
[INFO] [stderr]     |
[INFO] [stderr] 132 |                 let register = i.get_register_number();
[INFO] [stderr]     |                     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_register`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `alias`
[INFO] [stderr]    --> src/cluster/client.rs:183:33
[INFO] [stderr]     |
[INFO] [stderr] 183 | ...                   ref alias,
[INFO] [stderr]     |                       ----^^^^^
[INFO] [stderr]     |                       |
[INFO] [stderr]     |                       help: try ignoring the field: `alias: _`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/cluster/client.rs:54:27
[INFO] [stderr]    |
[INFO] [stderr] 54 |                 if let Ok(mut hello) = IridiumMessage::hello(alias, &self.bind_port.clone().unwrap()) {
[INFO] [stderr]    |                           ----^^^^^
[INFO] [stderr]    |                           |
[INFO] [stderr]    |                           help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/cluster/server.rs:35:33
[INFO] [stderr]    |
[INFO] [stderr] 35 | ...                   let mut cmgr_lock = cmgr.read().unwrap();
[INFO] [stderr]    |                           ----^^^^^^^^^
[INFO] [stderr]    |                           |
[INFO] [stderr]    |                           help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/cluster/server.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |         let mut cmgr = connection_manager.clone();
[INFO] [stderr]    |             ----^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/assembler/mod.rs:134:17
[INFO] [stderr]     |
[INFO] [stderr] 134 |                 wtr.write_i16::<LittleEndian>(value.unwrap());
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::prelude::*`
[INFO] [stderr]  --> src/bin/iridium.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/bin/iridium.rs:118:21
[INFO] [stderr]     |
[INFO] [stderr] 118 |                 let mut vm = VM::new()
[INFO] [stderr]     |                     ----^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/bin/iridium.rs:122:21
[INFO] [stderr]     |
[INFO] [stderr] 122 |                 let mut rx = repl.rx_pipe.take();
[INFO] [stderr]     |                     ----^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]  --> src/assembler/comment_parsers.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | /// Looks for a comment start
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macros
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stderr]   = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]  --> src/assembler/comment_parsers.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | /// Examples:
[INFO] [stderr]   | ^^^^^^^^^^^^^ rustdoc does not generate documentation for macros
[INFO] [stderr]   |
[INFO] [stderr]   = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]   --> src/assembler/directive_parsers.rs:40:1
[INFO] [stderr]    |
[INFO] [stderr] 40 | /// Will try to parse out any of the Directive forms
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macros
[INFO] [stderr]    |
[INFO] [stderr]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/assembler/instruction_parsers.rs:235:1
[INFO] [stderr]     |
[INFO] [stderr] 235 | /// Will try to parse out any of the Instruction forms
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macros
[INFO] [stderr]     |
[INFO] [stderr]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]  --> src/assembler/label_parsers.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | /// Looks for a user-defined label, such as `label1:`
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macros
[INFO] [stderr]   |
[INFO] [stderr]   = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]   --> src/assembler/label_parsers.rs:19:1
[INFO] [stderr]    |
[INFO] [stderr] 19 | /// Looks for a user-defined label, such as `label1:`
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macros
[INFO] [stderr]    |
[INFO] [stderr]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]  --> src/assembler/operand_parsers.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | /// Parser for all numbers, which have to be prefaced with `#` in our assembly language:
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macros
[INFO] [stderr]   |
[INFO] [stderr]   = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]  --> src/assembler/operand_parsers.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | /// #100
[INFO] [stderr]   | ^^^^^^^^ rustdoc does not generate documentation for macros
[INFO] [stderr]   |
[INFO] [stderr]   = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]   --> src/assembler/operand_parsers.rs:30:1
[INFO] [stderr]    |
[INFO] [stderr] 30 | /// Parser for all floats, which have to be prefaced with `#` in our assembly language:
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macros
[INFO] [stderr]    |
[INFO] [stderr]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]   --> src/assembler/operand_parsers.rs:31:1
[INFO] [stderr]    |
[INFO] [stderr] 31 | /// #100.0
[INFO] [stderr]    | ^^^^^^^^^^ rustdoc does not generate documentation for macros
[INFO] [stderr]    |
[INFO] [stderr]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `NodeInfo`
[INFO] [stderr]   --> src/cluster/client.rs:11:15
[INFO] [stderr]    |
[INFO] [stderr] 11 | use cluster::{NodeInfo};
[INFO] [stderr]    |               ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `NodeAlias`
[INFO] [stderr]  --> src/cluster/manager.rs:2:15
[INFO] [stderr]   |
[INFO] [stderr] 2 | use cluster::{NodeAlias, NodeInfo};
[INFO] [stderr]   |               ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::prelude::*`
[INFO] [stderr]  --> src/bin/iridium.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `PIE_HEADER_LENGTH`, `PIE_HEADER_PREFIX`
[INFO] [stderr]  --> benches/iridium.rs:6:26
[INFO] [stderr]   |
[INFO] [stderr] 6 | use iridium::assembler::{PIE_HEADER_LENGTH, PIE_HEADER_PREFIX};
[INFO] [stderr]   |                          ^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/bin/iridium.rs:118:21
[INFO] [stderr]     |
[INFO] [stderr] 118 |                 let mut vm = VM::new()
[INFO] [stderr]     |                     ----^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/bin/iridium.rs:122:21
[INFO] [stderr]     |
[INFO] [stderr] 122 |                 let mut rx = repl.rx_pipe.take();
[INFO] [stderr]     |                     ----^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]   --> src/remote/client.rs:80:25
[INFO] [stderr]    |
[INFO] [stderr] 80 |                     buf.trim_right();
[INFO] [stderr]    |                         ^^^^^^^^^^ help: replace the use of the deprecated item: `trim_end`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `register`
[INFO] [stderr]    --> src/assembler/mod.rs:132:21
[INFO] [stderr]     |
[INFO] [stderr] 132 |                 let register = i.get_register_number();
[INFO] [stderr]     |                     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_register`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `alias`
[INFO] [stderr]    --> src/cluster/client.rs:183:33
[INFO] [stderr]     |
[INFO] [stderr] 183 | ...                   ref alias,
[INFO] [stderr]     |                       ----^^^^^
[INFO] [stderr]     |                       |
[INFO] [stderr]     |                       help: try ignoring the field: `alias: _`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/cluster/client.rs:54:27
[INFO] [stderr]    |
[INFO] [stderr] 54 |                 if let Ok(mut hello) = IridiumMessage::hello(alias, &self.bind_port.clone().unwrap()) {
[INFO] [stderr]    |                           ----^^^^^
[INFO] [stderr]    |                           |
[INFO] [stderr]    |                           help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/cluster/server.rs:35:33
[INFO] [stderr]    |
[INFO] [stderr] 35 | ...                   let mut cmgr_lock = cmgr.read().unwrap();
[INFO] [stderr]    |                           ----^^^^^^^^^
[INFO] [stderr]    |                           |
[INFO] [stderr]    |                           help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/cluster/server.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |         let mut cmgr = connection_manager.clone();
[INFO] [stderr]    |             ----^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/assembler/mod.rs:134:17
[INFO] [stderr]     |
[INFO] [stderr] 134 |                 wtr.write_i16::<LittleEndian>(value.unwrap());
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.56s
[INFO] running `"docker" "inspect" "7c36e60753408a384c99429f6a6edb375fadaf9922c758bf21a5a8c9948aebb1"`
[INFO] running `"docker" "rm" "-f" "7c36e60753408a384c99429f6a6edb375fadaf9922c758bf21a5a8c9948aebb1"`
[INFO] [stdout] 7c36e60753408a384c99429f6a6edb375fadaf9922c758bf21a5a8c9948aebb1
