[INFO] cloning repository https://github.com/1yesman9/combinators
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/1yesman9/combinators" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F1yesman9%2Fcombinators", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F1yesman9%2Fcombinators'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b07eb37fe524db3c082cb5622d12513a1ec44041
[INFO] checking 1yesman9/combinators against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F1yesman9%2Fcombinators" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/1yesman9/combinators
[INFO] finished tweaking git repo https://github.com/1yesman9/combinators
[INFO] tweaked toml for git repo https://github.com/1yesman9/combinators written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/1yesman9/combinators on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/1yesman9/combinators already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8a310b7a06c072af03638c39ca827f7db18c078fc517a160fa894a67ea6db732
[INFO] running `Command { std: "docker" "start" "-a" "8a310b7a06c072af03638c39ca827f7db18c078fc517a160fa894a67ea6db732", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8a310b7a06c072af03638c39ca827f7db18c078fc517a160fa894a67ea6db732", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a310b7a06c072af03638c39ca827f7db18c078fc517a160fa894a67ea6db732", kill_on_drop: false }`
[INFO] [stdout] 8a310b7a06c072af03638c39ca827f7db18c078fc517a160fa894a67ea6db732
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 200f72aefce68a27308b2f1a503f88b7e597b5a8a1dfb1eeb168530647af8de6
[INFO] running `Command { std: "docker" "start" "-a" "200f72aefce68a27308b2f1a503f88b7e597b5a8a1dfb1eeb168530647af8de6", kill_on_drop: false }`
[INFO] [stderr]     Checking combinators v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(macro_metavar_expr)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `or` and `string`
[INFO] [stdout]  --> src/string.rs:3:35
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::{str, or, combinator::{string, or}};
[INFO] [stdout]   |                                   ^^^^^^  ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::combinator::zero_or_more`
[INFO] [stdout]  --> src/string.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::combinator::zero_or_more;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `map`
[INFO] [stdout]  --> src/number.rs:3:35
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::combinator::{and_then, map};
[INFO] [stdout]   |                                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/combinator.rs:21:33
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn zero_or_more<'a, Output>(mut parser: impl Parser<'a, Output>) -> impl Parser<'a, Vec<Output>> {
[INFO] [stdout]    |                                 ----^^^^^^
[INFO] [stdout]    |                                 |
[INFO] [stdout]    |                                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/combinator.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let mut parser = zero_or_more(parser);
[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/string.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let mut parser = zero_or_more_chr(predicate);
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(macro_metavar_expr)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `or` and `string`
[INFO] [stdout]  --> src/string.rs:3:35
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::{str, or, combinator::{string, or}};
[INFO] [stdout]   |                                   ^^^^^^  ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::combinator::zero_or_more`
[INFO] [stdout]  --> src/string.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::combinator::zero_or_more;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `map`
[INFO] [stdout]  --> src/number.rs:3:35
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::combinator::{and_then, map};
[INFO] [stdout]   |                                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/combinator.rs:21:33
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn zero_or_more<'a, Output>(mut parser: impl Parser<'a, Output>) -> impl Parser<'a, Vec<Output>> {
[INFO] [stdout]    |                                 ----^^^^^^
[INFO] [stdout]    |                                 |
[INFO] [stdout]    |                                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/combinator.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let mut parser = zero_or_more(parser);
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]   --> src/combinator.rs:63:25
[INFO] [stdout]    |
[INFO] [stdout] 63 |             .and_then(|(result, remaining)| right.parse(remaining))
[INFO] [stdout]    |                         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right_res`
[INFO] [stdout]   --> src/combinator.rs:75:50
[INFO] [stdout]    |
[INFO] [stdout] 75 |                 right.parse(left_rem).and_then(|(right_res, right_rem)| Ok((left_res, right_rem))).map_err(|_| input)
[INFO] [stdout]    |                                                  ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_right_res`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `elements`
[INFO] [stdout]   --> src/lib.rs:33:28
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn or_trie<'a, Output>(elements: &[(&str, Output)]) {//-> impl Parser<'a, Output> {
[INFO] [stdout]    |                            ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_elements`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                    let ($(mut $name),+);
[INFO] [stdout]    |                           ----^^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 75 | / tuple!(
[INFO] [stdout] 76 | |     P1 O1 o1, P2 O2 o2, P3 O3 o3, P4 O4 o4, P5 O5 o5,
[INFO] [stdout] 77 | |     P6 O6 o6, P7 O7 o7, P8 O8 o8, P9 O9 o9, P10 O10 o10,
[INFO] [stdout] 78 | |     P11 O11 o11, P12 O12 o12, P13 O13 o13, P14 O14 o14, P15 O15 o15,
[INFO] [stdout] 79 | |     P16 O16 o16, P17 O17 o17, P18 O18 o18, P19 O19 o19, P20 O20 o20
[INFO] [stdout] 80 | | );
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tuple_inner` which comes from the expansion of the macro `tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                    let ($(mut $name),+);
[INFO] [stdout]    |                           ----^^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 75 | / tuple!(
[INFO] [stdout] 76 | |     P1 O1 o1, P2 O2 o2, P3 O3 o3, P4 O4 o4, P5 O5 o5,
[INFO] [stdout] 77 | |     P6 O6 o6, P7 O7 o7, P8 O8 o8, P9 O9 o9, P10 O10 o10,
[INFO] [stdout] 78 | |     P11 O11 o11, P12 O12 o12, P13 O13 o13, P14 O14 o14, P15 O15 o15,
[INFO] [stdout] 79 | |     P16 O16 o16, P17 O17 o17, P18 O18 o18, P19 O19 o19, P20 O20 o20
[INFO] [stdout] 80 | | );
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tuple_inner` which comes from the expansion of the macro `tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/string.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let mut parser = zero_or_more_chr(predicate);
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                    let ($(mut $name),+);
[INFO] [stdout]    |                           ----^^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 75 | / tuple!(
[INFO] [stdout] 76 | |     P1 O1 o1, P2 O2 o2, P3 O3 o3, P4 O4 o4, P5 O5 o5,
[INFO] [stdout] 77 | |     P6 O6 o6, P7 O7 o7, P8 O8 o8, P9 O9 o9, P10 O10 o10,
[INFO] [stdout] 78 | |     P11 O11 o11, P12 O12 o12, P13 O13 o13, P14 O14 o14, P15 O15 o15,
[INFO] [stdout] 79 | |     P16 O16 o16, P17 O17 o17, P18 O18 o18, P19 O19 o19, P20 O20 o20
[INFO] [stdout] 80 | | );
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tuple_inner` which comes from the expansion of the macro `tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                    let ($(mut $name),+);
[INFO] [stdout]    |                           ----^^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 75 | / tuple!(
[INFO] [stdout] 76 | |     P1 O1 o1, P2 O2 o2, P3 O3 o3, P4 O4 o4, P5 O5 o5,
[INFO] [stdout] 77 | |     P6 O6 o6, P7 O7 o7, P8 O8 o8, P9 O9 o9, P10 O10 o10,
[INFO] [stdout] 78 | |     P11 O11 o11, P12 O12 o12, P13 O13 o13, P14 O14 o14, P15 O15 o15,
[INFO] [stdout] 79 | |     P16 O16 o16, P17 O17 o17, P18 O18 o18, P19 O19 o19, P20 O20 o20
[INFO] [stdout] 80 | | );
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tuple_inner` which comes from the expansion of the macro `tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                    let ($(mut $name),+);
[INFO] [stdout]    |                           ----^^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 75 | / tuple!(
[INFO] [stdout] 76 | |     P1 O1 o1, P2 O2 o2, P3 O3 o3, P4 O4 o4, P5 O5 o5,
[INFO] [stdout] 77 | |     P6 O6 o6, P7 O7 o7, P8 O8 o8, P9 O9 o9, P10 O10 o10,
[INFO] [stdout] 78 | |     P11 O11 o11, P12 O12 o12, P13 O13 o13, P14 O14 o14, P15 O15 o15,
[INFO] [stdout] 79 | |     P16 O16 o16, P17 O17 o17, P18 O18 o18, P19 O19 o19, P20 O20 o20
[INFO] [stdout] 80 | | );
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tuple_inner` which comes from the expansion of the macro `tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                    let ($(mut $name),+);
[INFO] [stdout]    |                           ----^^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 75 | / tuple!(
[INFO] [stdout] 76 | |     P1 O1 o1, P2 O2 o2, P3 O3 o3, P4 O4 o4, P5 O5 o5,
[INFO] [stdout] 77 | |     P6 O6 o6, P7 O7 o7, P8 O8 o8, P9 O9 o9, P10 O10 o10,
[INFO] [stdout] 78 | |     P11 O11 o11, P12 O12 o12, P13 O13 o13, P14 O14 o14, P15 O15 o15,
[INFO] [stdout] 79 | |     P16 O16 o16, P17 O17 o17, P18 O18 o18, P19 O19 o19, P20 O20 o20
[INFO] [stdout] 80 | | );
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tuple_inner` which comes from the expansion of the macro `tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                    let ($(mut $name),+);
[INFO] [stdout]    |                           ----^^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 75 | / tuple!(
[INFO] [stdout] 76 | |     P1 O1 o1, P2 O2 o2, P3 O3 o3, P4 O4 o4, P5 O5 o5,
[INFO] [stdout] 77 | |     P6 O6 o6, P7 O7 o7, P8 O8 o8, P9 O9 o9, P10 O10 o10,
[INFO] [stdout] 78 | |     P11 O11 o11, P12 O12 o12, P13 O13 o13, P14 O14 o14, P15 O15 o15,
[INFO] [stdout] 79 | |     P16 O16 o16, P17 O17 o17, P18 O18 o18, P19 O19 o19, P20 O20 o20
[INFO] [stdout] 80 | | );
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tuple_inner` which comes from the expansion of the macro `tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                    let ($(mut $name),+);
[INFO] [stdout]    |                           ----^^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 75 | / tuple!(
[INFO] [stdout] 76 | |     P1 O1 o1, P2 O2 o2, P3 O3 o3, P4 O4 o4, P5 O5 o5,
[INFO] [stdout] 77 | |     P6 O6 o6, P7 O7 o7, P8 O8 o8, P9 O9 o9, P10 O10 o10,
[INFO] [stdout] 78 | |     P11 O11 o11, P12 O12 o12, P13 O13 o13, P14 O14 o14, P15 O15 o15,
[INFO] [stdout] 79 | |     P16 O16 o16, P17 O17 o17, P18 O18 o18, P19 O19 o19, P20 O20 o20
[INFO] [stdout] 80 | | );
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tuple_inner` which comes from the expansion of the macro `tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                    let ($(mut $name),+);
[INFO] [stdout]    |                           ----^^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 75 | / tuple!(
[INFO] [stdout] 76 | |     P1 O1 o1, P2 O2 o2, P3 O3 o3, P4 O4 o4, P5 O5 o5,
[INFO] [stdout] 77 | |     P6 O6 o6, P7 O7 o7, P8 O8 o8, P9 O9 o9, P10 O10 o10,
[INFO] [stdout] 78 | |     P11 O11 o11, P12 O12 o12, P13 O13 o13, P14 O14 o14, P15 O15 o15,
[INFO] [stdout] 79 | |     P16 O16 o16, P17 O17 o17, P18 O18 o18, P19 O19 o19, P20 O20 o20
[INFO] [stdout] 80 | | );
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tuple_inner` which comes from the expansion of the macro `tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                    let ($(mut $name),+);
[INFO] [stdout]    |                           ----^^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 75 | / tuple!(
[INFO] [stdout] 76 | |     P1 O1 o1, P2 O2 o2, P3 O3 o3, P4 O4 o4, P5 O5 o5,
[INFO] [stdout] 77 | |     P6 O6 o6, P7 O7 o7, P8 O8 o8, P9 O9 o9, P10 O10 o10,
[INFO] [stdout] 78 | |     P11 O11 o11, P12 O12 o12, P13 O13 o13, P14 O14 o14, P15 O15 o15,
[INFO] [stdout] 79 | |     P16 O16 o16, P17 O17 o17, P18 O18 o18, P19 O19 o19, P20 O20 o20
[INFO] [stdout] 80 | | );
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tuple_inner` which comes from the expansion of the macro `tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                    let ($(mut $name),+);
[INFO] [stdout]    |                           ----^^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 75 | / tuple!(
[INFO] [stdout] 76 | |     P1 O1 o1, P2 O2 o2, P3 O3 o3, P4 O4 o4, P5 O5 o5,
[INFO] [stdout] 77 | |     P6 O6 o6, P7 O7 o7, P8 O8 o8, P9 O9 o9, P10 O10 o10,
[INFO] [stdout] 78 | |     P11 O11 o11, P12 O12 o12, P13 O13 o13, P14 O14 o14, P15 O15 o15,
[INFO] [stdout] 79 | |     P16 O16 o16, P17 O17 o17, P18 O18 o18, P19 O19 o19, P20 O20 o20
[INFO] [stdout] 80 | | );
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tuple_inner` which comes from the expansion of the macro `tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                    let ($(mut $name),+);
[INFO] [stdout]    |                           ----^^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 75 | / tuple!(
[INFO] [stdout] 76 | |     P1 O1 o1, P2 O2 o2, P3 O3 o3, P4 O4 o4, P5 O5 o5,
[INFO] [stdout] 77 | |     P6 O6 o6, P7 O7 o7, P8 O8 o8, P9 O9 o9, P10 O10 o10,
[INFO] [stdout] 78 | |     P11 O11 o11, P12 O12 o12, P13 O13 o13, P14 O14 o14, P15 O15 o15,
[INFO] [stdout] 79 | |     P16 O16 o16, P17 O17 o17, P18 O18 o18, P19 O19 o19, P20 O20 o20
[INFO] [stdout] 80 | | );
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tuple_inner` which comes from the expansion of the macro `tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                    let ($(mut $name),+);
[INFO] [stdout]    |                           ----^^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 75 | / tuple!(
[INFO] [stdout] 76 | |     P1 O1 o1, P2 O2 o2, P3 O3 o3, P4 O4 o4, P5 O5 o5,
[INFO] [stdout] 77 | |     P6 O6 o6, P7 O7 o7, P8 O8 o8, P9 O9 o9, P10 O10 o10,
[INFO] [stdout] 78 | |     P11 O11 o11, P12 O12 o12, P13 O13 o13, P14 O14 o14, P15 O15 o15,
[INFO] [stdout] 79 | |     P16 O16 o16, P17 O17 o17, P18 O18 o18, P19 O19 o19, P20 O20 o20
[INFO] [stdout] 80 | | );
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tuple_inner` which comes from the expansion of the macro `tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                    let ($(mut $name),+);
[INFO] [stdout]    |                           ----^^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 75 | / tuple!(
[INFO] [stdout] 76 | |     P1 O1 o1, P2 O2 o2, P3 O3 o3, P4 O4 o4, P5 O5 o5,
[INFO] [stdout] 77 | |     P6 O6 o6, P7 O7 o7, P8 O8 o8, P9 O9 o9, P10 O10 o10,
[INFO] [stdout] 78 | |     P11 O11 o11, P12 O12 o12, P13 O13 o13, P14 O14 o14, P15 O15 o15,
[INFO] [stdout] 79 | |     P16 O16 o16, P17 O17 o17, P18 O18 o18, P19 O19 o19, P20 O20 o20
[INFO] [stdout] 80 | | );
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tuple_inner` which comes from the expansion of the macro `tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                    let ($(mut $name),+);
[INFO] [stdout]    |                           ----^^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 75 | / tuple!(
[INFO] [stdout] 76 | |     P1 O1 o1, P2 O2 o2, P3 O3 o3, P4 O4 o4, P5 O5 o5,
[INFO] [stdout] 77 | |     P6 O6 o6, P7 O7 o7, P8 O8 o8, P9 O9 o9, P10 O10 o10,
[INFO] [stdout] 78 | |     P11 O11 o11, P12 O12 o12, P13 O13 o13, P14 O14 o14, P15 O15 o15,
[INFO] [stdout] 79 | |     P16 O16 o16, P17 O17 o17, P18 O18 o18, P19 O19 o19, P20 O20 o20
[INFO] [stdout] 80 | | );
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tuple_inner` which comes from the expansion of the macro `tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                    let ($(mut $name),+);
[INFO] [stdout]    |                           ----^^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 75 | / tuple!(
[INFO] [stdout] 76 | |     P1 O1 o1, P2 O2 o2, P3 O3 o3, P4 O4 o4, P5 O5 o5,
[INFO] [stdout] 77 | |     P6 O6 o6, P7 O7 o7, P8 O8 o8, P9 O9 o9, P10 O10 o10,
[INFO] [stdout] 78 | |     P11 O11 o11, P12 O12 o12, P13 O13 o13, P14 O14 o14, P15 O15 o15,
[INFO] [stdout] 79 | |     P16 O16 o16, P17 O17 o17, P18 O18 o18, P19 O19 o19, P20 O20 o20
[INFO] [stdout] 80 | | );
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tuple_inner` which comes from the expansion of the macro `tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                    let ($(mut $name),+);
[INFO] [stdout]    |                           ----^^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 75 | / tuple!(
[INFO] [stdout] 76 | |     P1 O1 o1, P2 O2 o2, P3 O3 o3, P4 O4 o4, P5 O5 o5,
[INFO] [stdout] 77 | |     P6 O6 o6, P7 O7 o7, P8 O8 o8, P9 O9 o9, P10 O10 o10,
[INFO] [stdout] 78 | |     P11 O11 o11, P12 O12 o12, P13 O13 o13, P14 O14 o14, P15 O15 o15,
[INFO] [stdout] 79 | |     P16 O16 o16, P17 O17 o17, P18 O18 o18, P19 O19 o19, P20 O20 o20
[INFO] [stdout] 80 | | );
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tuple_inner` which comes from the expansion of the macro `tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]   --> src/combinator.rs:63:25
[INFO] [stdout]    |
[INFO] [stdout] 63 |             .and_then(|(result, remaining)| right.parse(remaining))
[INFO] [stdout]    |                         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                    let ($(mut $name),+);
[INFO] [stdout]    |                           ----^^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 75 | / tuple!(
[INFO] [stdout] 76 | |     P1 O1 o1, P2 O2 o2, P3 O3 o3, P4 O4 o4, P5 O5 o5,
[INFO] [stdout] 77 | |     P6 O6 o6, P7 O7 o7, P8 O8 o8, P9 O9 o9, P10 O10 o10,
[INFO] [stdout] 78 | |     P11 O11 o11, P12 O12 o12, P13 O13 o13, P14 O14 o14, P15 O15 o15,
[INFO] [stdout] 79 | |     P16 O16 o16, P17 O17 o17, P18 O18 o18, P19 O19 o19, P20 O20 o20
[INFO] [stdout] 80 | | );
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tuple_inner` which comes from the expansion of the macro `tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `right_res`
[INFO] [stdout]   --> src/combinator.rs:75:50
[INFO] [stdout]    |
[INFO] [stdout] 75 |                 right.parse(left_rem).and_then(|(right_res, right_rem)| Ok((left_res, right_rem))).map_err(|_| input)
[INFO] [stdout]    |                                                  ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_right_res`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                    let ($(mut $name),+);
[INFO] [stdout]    |                           ----^^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 75 | / tuple!(
[INFO] [stdout] 76 | |     P1 O1 o1, P2 O2 o2, P3 O3 o3, P4 O4 o4, P5 O5 o5,
[INFO] [stdout] 77 | |     P6 O6 o6, P7 O7 o7, P8 O8 o8, P9 O9 o9, P10 O10 o10,
[INFO] [stdout] 78 | |     P11 O11 o11, P12 O12 o12, P13 O13 o13, P14 O14 o14, P15 O15 o15,
[INFO] [stdout] 79 | |     P16 O16 o16, P17 O17 o17, P18 O18 o18, P19 O19 o19, P20 O20 o20
[INFO] [stdout] 80 | | );
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tuple_inner` which comes from the expansion of the macro `tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `elements`
[INFO] [stdout]   --> src/lib.rs:33:28
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn or_trie<'a, Output>(elements: &[(&str, Output)]) {//-> impl Parser<'a, Output> {
[INFO] [stdout]    |                            ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_elements`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `combinators` (lib) due to 1 previous error; 28 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                    let ($(mut $name),+);
[INFO] [stdout]    |                           ----^^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 75 | / tuple!(
[INFO] [stdout] 76 | |     P1 O1 o1, P2 O2 o2, P3 O3 o3, P4 O4 o4, P5 O5 o5,
[INFO] [stdout] 77 | |     P6 O6 o6, P7 O7 o7, P8 O8 o8, P9 O9 o9, P10 O10 o10,
[INFO] [stdout] 78 | |     P11 O11 o11, P12 O12 o12, P13 O13 o13, P14 O14 o14, P15 O15 o15,
[INFO] [stdout] 79 | |     P16 O16 o16, P17 O17 o17, P18 O18 o18, P19 O19 o19, P20 O20 o20
[INFO] [stdout] 80 | | );
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tuple_inner` which comes from the expansion of the macro `tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                    let ($(mut $name),+);
[INFO] [stdout]    |                           ----^^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 75 | / tuple!(
[INFO] [stdout] 76 | |     P1 O1 o1, P2 O2 o2, P3 O3 o3, P4 O4 o4, P5 O5 o5,
[INFO] [stdout] 77 | |     P6 O6 o6, P7 O7 o7, P8 O8 o8, P9 O9 o9, P10 O10 o10,
[INFO] [stdout] 78 | |     P11 O11 o11, P12 O12 o12, P13 O13 o13, P14 O14 o14, P15 O15 o15,
[INFO] [stdout] 79 | |     P16 O16 o16, P17 O17 o17, P18 O18 o18, P19 O19 o19, P20 O20 o20
[INFO] [stdout] 80 | | );
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tuple_inner` which comes from the expansion of the macro `tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                    let ($(mut $name),+);
[INFO] [stdout]    |                           ----^^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 75 | / tuple!(
[INFO] [stdout] 76 | |     P1 O1 o1, P2 O2 o2, P3 O3 o3, P4 O4 o4, P5 O5 o5,
[INFO] [stdout] 77 | |     P6 O6 o6, P7 O7 o7, P8 O8 o8, P9 O9 o9, P10 O10 o10,
[INFO] [stdout] 78 | |     P11 O11 o11, P12 O12 o12, P13 O13 o13, P14 O14 o14, P15 O15 o15,
[INFO] [stdout] 79 | |     P16 O16 o16, P17 O17 o17, P18 O18 o18, P19 O19 o19, P20 O20 o20
[INFO] [stdout] 80 | | );
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tuple_inner` which comes from the expansion of the macro `tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                    let ($(mut $name),+);
[INFO] [stdout]    |                           ----^^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 75 | / tuple!(
[INFO] [stdout] 76 | |     P1 O1 o1, P2 O2 o2, P3 O3 o3, P4 O4 o4, P5 O5 o5,
[INFO] [stdout] 77 | |     P6 O6 o6, P7 O7 o7, P8 O8 o8, P9 O9 o9, P10 O10 o10,
[INFO] [stdout] 78 | |     P11 O11 o11, P12 O12 o12, P13 O13 o13, P14 O14 o14, P15 O15 o15,
[INFO] [stdout] 79 | |     P16 O16 o16, P17 O17 o17, P18 O18 o18, P19 O19 o19, P20 O20 o20
[INFO] [stdout] 80 | | );
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tuple_inner` which comes from the expansion of the macro `tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                    let ($(mut $name),+);
[INFO] [stdout]    |                           ----^^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 75 | / tuple!(
[INFO] [stdout] 76 | |     P1 O1 o1, P2 O2 o2, P3 O3 o3, P4 O4 o4, P5 O5 o5,
[INFO] [stdout] 77 | |     P6 O6 o6, P7 O7 o7, P8 O8 o8, P9 O9 o9, P10 O10 o10,
[INFO] [stdout] 78 | |     P11 O11 o11, P12 O12 o12, P13 O13 o13, P14 O14 o14, P15 O15 o15,
[INFO] [stdout] 79 | |     P16 O16 o16, P17 O17 o17, P18 O18 o18, P19 O19 o19, P20 O20 o20
[INFO] [stdout] 80 | | );
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tuple_inner` which comes from the expansion of the macro `tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                    let ($(mut $name),+);
[INFO] [stdout]    |                           ----^^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 75 | / tuple!(
[INFO] [stdout] 76 | |     P1 O1 o1, P2 O2 o2, P3 O3 o3, P4 O4 o4, P5 O5 o5,
[INFO] [stdout] 77 | |     P6 O6 o6, P7 O7 o7, P8 O8 o8, P9 O9 o9, P10 O10 o10,
[INFO] [stdout] 78 | |     P11 O11 o11, P12 O12 o12, P13 O13 o13, P14 O14 o14, P15 O15 o15,
[INFO] [stdout] 79 | |     P16 O16 o16, P17 O17 o17, P18 O18 o18, P19 O19 o19, P20 O20 o20
[INFO] [stdout] 80 | | );
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tuple_inner` which comes from the expansion of the macro `tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                    let ($(mut $name),+);
[INFO] [stdout]    |                           ----^^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 75 | / tuple!(
[INFO] [stdout] 76 | |     P1 O1 o1, P2 O2 o2, P3 O3 o3, P4 O4 o4, P5 O5 o5,
[INFO] [stdout] 77 | |     P6 O6 o6, P7 O7 o7, P8 O8 o8, P9 O9 o9, P10 O10 o10,
[INFO] [stdout] 78 | |     P11 O11 o11, P12 O12 o12, P13 O13 o13, P14 O14 o14, P15 O15 o15,
[INFO] [stdout] 79 | |     P16 O16 o16, P17 O17 o17, P18 O18 o18, P19 O19 o19, P20 O20 o20
[INFO] [stdout] 80 | | );
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tuple_inner` which comes from the expansion of the macro `tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                    let ($(mut $name),+);
[INFO] [stdout]    |                           ----^^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 75 | / tuple!(
[INFO] [stdout] 76 | |     P1 O1 o1, P2 O2 o2, P3 O3 o3, P4 O4 o4, P5 O5 o5,
[INFO] [stdout] 77 | |     P6 O6 o6, P7 O7 o7, P8 O8 o8, P9 O9 o9, P10 O10 o10,
[INFO] [stdout] 78 | |     P11 O11 o11, P12 O12 o12, P13 O13 o13, P14 O14 o14, P15 O15 o15,
[INFO] [stdout] 79 | |     P16 O16 o16, P17 O17 o17, P18 O18 o18, P19 O19 o19, P20 O20 o20
[INFO] [stdout] 80 | | );
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tuple_inner` which comes from the expansion of the macro `tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                    let ($(mut $name),+);
[INFO] [stdout]    |                           ----^^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 75 | / tuple!(
[INFO] [stdout] 76 | |     P1 O1 o1, P2 O2 o2, P3 O3 o3, P4 O4 o4, P5 O5 o5,
[INFO] [stdout] 77 | |     P6 O6 o6, P7 O7 o7, P8 O8 o8, P9 O9 o9, P10 O10 o10,
[INFO] [stdout] 78 | |     P11 O11 o11, P12 O12 o12, P13 O13 o13, P14 O14 o14, P15 O15 o15,
[INFO] [stdout] 79 | |     P16 O16 o16, P17 O17 o17, P18 O18 o18, P19 O19 o19, P20 O20 o20
[INFO] [stdout] 80 | | );
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tuple_inner` which comes from the expansion of the macro `tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                    let ($(mut $name),+);
[INFO] [stdout]    |                           ----^^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 75 | / tuple!(
[INFO] [stdout] 76 | |     P1 O1 o1, P2 O2 o2, P3 O3 o3, P4 O4 o4, P5 O5 o5,
[INFO] [stdout] 77 | |     P6 O6 o6, P7 O7 o7, P8 O8 o8, P9 O9 o9, P10 O10 o10,
[INFO] [stdout] 78 | |     P11 O11 o11, P12 O12 o12, P13 O13 o13, P14 O14 o14, P15 O15 o15,
[INFO] [stdout] 79 | |     P16 O16 o16, P17 O17 o17, P18 O18 o18, P19 O19 o19, P20 O20 o20
[INFO] [stdout] 80 | | );
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tuple_inner` which comes from the expansion of the macro `tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                    let ($(mut $name),+);
[INFO] [stdout]    |                           ----^^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 75 | / tuple!(
[INFO] [stdout] 76 | |     P1 O1 o1, P2 O2 o2, P3 O3 o3, P4 O4 o4, P5 O5 o5,
[INFO] [stdout] 77 | |     P6 O6 o6, P7 O7 o7, P8 O8 o8, P9 O9 o9, P10 O10 o10,
[INFO] [stdout] 78 | |     P11 O11 o11, P12 O12 o12, P13 O13 o13, P14 O14 o14, P15 O15 o15,
[INFO] [stdout] 79 | |     P16 O16 o16, P17 O17 o17, P18 O18 o18, P19 O19 o19, P20 O20 o20
[INFO] [stdout] 80 | | );
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tuple_inner` which comes from the expansion of the macro `tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                    let ($(mut $name),+);
[INFO] [stdout]    |                           ----^^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 75 | / tuple!(
[INFO] [stdout] 76 | |     P1 O1 o1, P2 O2 o2, P3 O3 o3, P4 O4 o4, P5 O5 o5,
[INFO] [stdout] 77 | |     P6 O6 o6, P7 O7 o7, P8 O8 o8, P9 O9 o9, P10 O10 o10,
[INFO] [stdout] 78 | |     P11 O11 o11, P12 O12 o12, P13 O13 o13, P14 O14 o14, P15 O15 o15,
[INFO] [stdout] 79 | |     P16 O16 o16, P17 O17 o17, P18 O18 o18, P19 O19 o19, P20 O20 o20
[INFO] [stdout] 80 | | );
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tuple_inner` which comes from the expansion of the macro `tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                    let ($(mut $name),+);
[INFO] [stdout]    |                           ----^^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 75 | / tuple!(
[INFO] [stdout] 76 | |     P1 O1 o1, P2 O2 o2, P3 O3 o3, P4 O4 o4, P5 O5 o5,
[INFO] [stdout] 77 | |     P6 O6 o6, P7 O7 o7, P8 O8 o8, P9 O9 o9, P10 O10 o10,
[INFO] [stdout] 78 | |     P11 O11 o11, P12 O12 o12, P13 O13 o13, P14 O14 o14, P15 O15 o15,
[INFO] [stdout] 79 | |     P16 O16 o16, P17 O17 o17, P18 O18 o18, P19 O19 o19, P20 O20 o20
[INFO] [stdout] 80 | | );
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tuple_inner` which comes from the expansion of the macro `tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                    let ($(mut $name),+);
[INFO] [stdout]    |                           ----^^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 75 | / tuple!(
[INFO] [stdout] 76 | |     P1 O1 o1, P2 O2 o2, P3 O3 o3, P4 O4 o4, P5 O5 o5,
[INFO] [stdout] 77 | |     P6 O6 o6, P7 O7 o7, P8 O8 o8, P9 O9 o9, P10 O10 o10,
[INFO] [stdout] 78 | |     P11 O11 o11, P12 O12 o12, P13 O13 o13, P14 O14 o14, P15 O15 o15,
[INFO] [stdout] 79 | |     P16 O16 o16, P17 O17 o17, P18 O18 o18, P19 O19 o19, P20 O20 o20
[INFO] [stdout] 80 | | );
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tuple_inner` which comes from the expansion of the macro `tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                    let ($(mut $name),+);
[INFO] [stdout]    |                           ----^^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 75 | / tuple!(
[INFO] [stdout] 76 | |     P1 O1 o1, P2 O2 o2, P3 O3 o3, P4 O4 o4, P5 O5 o5,
[INFO] [stdout] 77 | |     P6 O6 o6, P7 O7 o7, P8 O8 o8, P9 O9 o9, P10 O10 o10,
[INFO] [stdout] 78 | |     P11 O11 o11, P12 O12 o12, P13 O13 o13, P14 O14 o14, P15 O15 o15,
[INFO] [stdout] 79 | |     P16 O16 o16, P17 O17 o17, P18 O18 o18, P19 O19 o19, P20 O20 o20
[INFO] [stdout] 80 | | );
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tuple_inner` which comes from the expansion of the macro `tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                    let ($(mut $name),+);
[INFO] [stdout]    |                           ----^^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 75 | / tuple!(
[INFO] [stdout] 76 | |     P1 O1 o1, P2 O2 o2, P3 O3 o3, P4 O4 o4, P5 O5 o5,
[INFO] [stdout] 77 | |     P6 O6 o6, P7 O7 o7, P8 O8 o8, P9 O9 o9, P10 O10 o10,
[INFO] [stdout] 78 | |     P11 O11 o11, P12 O12 o12, P13 O13 o13, P14 O14 o14, P15 O15 o15,
[INFO] [stdout] 79 | |     P16 O16 o16, P17 O17 o17, P18 O18 o18, P19 O19 o19, P20 O20 o20
[INFO] [stdout] 80 | | );
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tuple_inner` which comes from the expansion of the macro `tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                    let ($(mut $name),+);
[INFO] [stdout]    |                           ----^^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 75 | / tuple!(
[INFO] [stdout] 76 | |     P1 O1 o1, P2 O2 o2, P3 O3 o3, P4 O4 o4, P5 O5 o5,
[INFO] [stdout] 77 | |     P6 O6 o6, P7 O7 o7, P8 O8 o8, P9 O9 o9, P10 O10 o10,
[INFO] [stdout] 78 | |     P11 O11 o11, P12 O12 o12, P13 O13 o13, P14 O14 o14, P15 O15 o15,
[INFO] [stdout] 79 | |     P16 O16 o16, P17 O17 o17, P18 O18 o18, P19 O19 o19, P20 O20 o20
[INFO] [stdout] 80 | | );
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tuple_inner` which comes from the expansion of the macro `tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                    let ($(mut $name),+);
[INFO] [stdout]    |                           ----^^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 75 | / tuple!(
[INFO] [stdout] 76 | |     P1 O1 o1, P2 O2 o2, P3 O3 o3, P4 O4 o4, P5 O5 o5,
[INFO] [stdout] 77 | |     P6 O6 o6, P7 O7 o7, P8 O8 o8, P9 O9 o9, P10 O10 o10,
[INFO] [stdout] 78 | |     P11 O11 o11, P12 O12 o12, P13 O13 o13, P14 O14 o14, P15 O15 o15,
[INFO] [stdout] 79 | |     P16 O16 o16, P17 O17 o17, P18 O18 o18, P19 O19 o19, P20 O20 o20
[INFO] [stdout] 80 | | );
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tuple_inner` which comes from the expansion of the macro `tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                    let ($(mut $name),+);
[INFO] [stdout]    |                           ----^^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 75 | / tuple!(
[INFO] [stdout] 76 | |     P1 O1 o1, P2 O2 o2, P3 O3 o3, P4 O4 o4, P5 O5 o5,
[INFO] [stdout] 77 | |     P6 O6 o6, P7 O7 o7, P8 O8 o8, P9 O9 o9, P10 O10 o10,
[INFO] [stdout] 78 | |     P11 O11 o11, P12 O12 o12, P13 O13 o13, P14 O14 o14, P15 O15 o15,
[INFO] [stdout] 79 | |     P16 O16 o16, P17 O17 o17, P18 O18 o18, P19 O19 o19, P20 O20 o20
[INFO] [stdout] 80 | | );
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `tuple_inner` which comes from the expansion of the macro `tuple` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `combinators` (lib test) due to 1 previous error; 28 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "200f72aefce68a27308b2f1a503f88b7e597b5a8a1dfb1eeb168530647af8de6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "200f72aefce68a27308b2f1a503f88b7e597b5a8a1dfb1eeb168530647af8de6", kill_on_drop: false }`
[INFO] [stdout] 200f72aefce68a27308b2f1a503f88b7e597b5a8a1dfb1eeb168530647af8de6
