[INFO] fetching crate pit-core 0.4.9...
[INFO] testing pit-core-0.4.9 against try#b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b for pr-145330-1
[INFO] extracting crate pit-core 0.4.9 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate pit-core 0.4.9
[INFO] finished tweaking crates.io crate pit-core 0.4.9
[INFO] tweaked toml for crates.io crate pit-core 0.4.9 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate pit-core 0.4.9 on toolchain b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate pit-core 0.4.9 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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 70eb303b2b173a38190c004dbf7f65a49e9ec259e0f7bad35eafdf0082c32c27
[INFO] running `Command { std: "docker" "start" "-a" "70eb303b2b173a38190c004dbf7f65a49e9ec259e0f7bad35eafdf0082c32c27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "70eb303b2b173a38190c004dbf7f65a49e9ec259e0f7bad35eafdf0082c32c27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70eb303b2b173a38190c004dbf7f65a49e9ec259e0f7bad35eafdf0082c32c27", kill_on_drop: false }`
[INFO] [stdout] 70eb303b2b173a38190c004dbf7f65a49e9ec259e0f7bad35eafdf0082c32c27
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7fc2a1ab91bd8a9343bae8226e0b468a2caebc8be777c21c18ae941c5a5b2190
[INFO] running `Command { std: "docker" "start" "-a" "7fc2a1ab91bd8a9343bae8226e0b468a2caebc8be777c21c18ae941c5a5b2190", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling base64 v0.22.1
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling sha3 v0.10.8
[INFO] [stderr]    Compiling nom v8.0.0
[INFO] [stderr]    Compiling darling_core v0.20.11
[INFO] [stderr]    Compiling derive_more-impl v2.0.1
[INFO] [stderr]    Compiling derive_more v2.0.1
[INFO] [stderr]    Compiling darling_macro v0.20.11
[INFO] [stderr]    Compiling darling v0.20.11
[INFO] [stderr]    Compiling instability v0.3.7
[INFO] [stderr]    Compiling pit-core v0.4.9 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `derive_more::Display`
[INFO] [stdout]   --> src/lib.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use derive_more::Display;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `alpha1` and `is_not`
[INFO] [stdout]   --> src/lib.rs:17:23
[INFO] [stdout]    |
[INFO] [stdout] 17 |     bytes::complete::{is_not, tag, take, take_while_m_n},
[INFO] [stdout]    |                       ^^^^^^
[INFO] [stdout] 18 |     character::complete::{alpha1, char, multispace0, none_of, space0},
[INFO] [stdout]    |                           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `num`
[INFO] [stdout]  --> src/generics.rs:1:28
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::{fmt::Formatter, num};
[INFO] [stdout]   |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `number`
[INFO] [stdout]  --> src/generics.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     number,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::_pcode::*`
[INFO] [stdout]   --> src/lib.rs:32:13
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub use crate::_pcode::*;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::_generics::*`
[INFO] [stdout]   --> src/lib.rs:37:13
[INFO] [stdout]    |
[INFO] [stdout] 37 |     pub use crate::_generics::*;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:346:5
[INFO] [stdout]     |
[INFO] [stdout] 306 | /     match a.strip_prefix("R") {
[INFO] [stdout] 307 | |         Some(b) => {
[INFO] [stdout] ...   |
[INFO] [stdout] 345 | |     }
[INFO] [stdout]     | |_____- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 346 |       todo!()
[INFO] [stdout]     |       ^^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `todo` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/generics.rs:41:45
[INFO] [stdout]    |
[INFO] [stdout] 41 |                 to_fill: (0..j).filter_map(|a| stack.pop()).collect(),
[INFO] [stdout]    |                                             ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/generics.rs:46:41
[INFO] [stdout]    |
[INFO] [stdout] 46 |             to_fill: (0..b).filter_map(|a| stack.pop()).collect(),
[INFO] [stdout]    |                                         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ARITY_KEY` is never used
[INFO] [stdout]  --> src/generics.rs:9:11
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub const ARITY_KEY: &'static str = "generic_params.modern";
[INFO] [stdout]   |           ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `GENERIC_KEY` is never used
[INFO] [stdout]   --> src/generics.rs:10:11
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub const GENERIC_KEY: &'static str = "generics.modern";
[INFO] [stdout]    |           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Mangle` is never used
[INFO] [stdout]   --> src/generics.rs:11:11
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub trait Mangle {
[INFO] [stdout]    |           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Mangled` is never constructed
[INFO] [stdout]   --> src/generics.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct Mangled<'a>(pub &'a (dyn Mangle + 'a));
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Param` is never used
[INFO] [stdout]   --> src/generics.rs:61:10
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub enum Param {
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `PExpr` is never used
[INFO] [stdout]  --> src/pcode.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub enum PExpr {
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Pat` is never constructed
[INFO] [stdout]   --> src/pcode.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Pat {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 19.32s
[INFO] running `Command { std: "docker" "inspect" "7fc2a1ab91bd8a9343bae8226e0b468a2caebc8be777c21c18ae941c5a5b2190", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fc2a1ab91bd8a9343bae8226e0b468a2caebc8be777c21c18ae941c5a5b2190", kill_on_drop: false }`
[INFO] [stdout] 7fc2a1ab91bd8a9343bae8226e0b468a2caebc8be777c21c18ae941c5a5b2190
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4b47761ffc361c3fab7ddc3169c9a27a360ebe7acc69aab597b4d7d2eb2715a9
[INFO] running `Command { std: "docker" "start" "-a" "4b47761ffc361c3fab7ddc3169c9a27a360ebe7acc69aab597b4d7d2eb2715a9", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `derive_more::Display`
[INFO] [stdout]   --> src/lib.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use derive_more::Display;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `alpha1` and `is_not`
[INFO] [stdout]   --> src/lib.rs:17:23
[INFO] [stdout]    |
[INFO] [stdout] 17 |     bytes::complete::{is_not, tag, take, take_while_m_n},
[INFO] [stdout]    |                       ^^^^^^
[INFO] [stdout] 18 |     character::complete::{alpha1, char, multispace0, none_of, space0},
[INFO] [stdout]    |                           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `num`
[INFO] [stdout]  --> src/generics.rs:1:28
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::{fmt::Formatter, num};
[INFO] [stdout]   |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `number`
[INFO] [stdout]  --> src/generics.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     number,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::_pcode::*`
[INFO] [stdout]   --> src/lib.rs:32:13
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub use crate::_pcode::*;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::_generics::*`
[INFO] [stdout]   --> src/lib.rs:37:13
[INFO] [stdout]    |
[INFO] [stdout] 37 |     pub use crate::_generics::*;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:346:5
[INFO] [stdout]     |
[INFO] [stdout] 306 | /     match a.strip_prefix("R") {
[INFO] [stdout] 307 | |         Some(b) => {
[INFO] [stdout] ...   |
[INFO] [stdout] 345 | |     }
[INFO] [stdout]     | |_____- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 346 |       todo!()
[INFO] [stdout]     |       ^^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `todo` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/generics.rs:41:45
[INFO] [stdout]    |
[INFO] [stdout] 41 |                 to_fill: (0..j).filter_map(|a| stack.pop()).collect(),
[INFO] [stdout]    |                                             ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/generics.rs:46:41
[INFO] [stdout]    |
[INFO] [stdout] 46 |             to_fill: (0..b).filter_map(|a| stack.pop()).collect(),
[INFO] [stdout]    |                                         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ARITY_KEY` is never used
[INFO] [stdout]  --> src/generics.rs:9:11
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub const ARITY_KEY: &'static str = "generic_params.modern";
[INFO] [stdout]   |           ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `GENERIC_KEY` is never used
[INFO] [stdout]   --> src/generics.rs:10:11
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub const GENERIC_KEY: &'static str = "generics.modern";
[INFO] [stdout]    |           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Mangle` is never used
[INFO] [stdout]   --> src/generics.rs:11:11
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub trait Mangle {
[INFO] [stdout]    |           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Mangled` is never constructed
[INFO] [stdout]   --> src/generics.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct Mangled<'a>(pub &'a (dyn Mangle + 'a));
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Param` is never used
[INFO] [stdout]   --> src/generics.rs:61:10
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub enum Param {
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `PExpr` is never used
[INFO] [stdout]  --> src/pcode.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub enum PExpr {
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Pat` is never constructed
[INFO] [stdout]   --> src/pcode.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Pat {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling pit-core v0.4.9 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `derive_more::Display`
[INFO] [stdout]   --> src/lib.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use derive_more::Display;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `alpha1` and `is_not`
[INFO] [stdout]   --> src/lib.rs:17:23
[INFO] [stdout]    |
[INFO] [stdout] 17 |     bytes::complete::{is_not, tag, take, take_while_m_n},
[INFO] [stdout]    |                       ^^^^^^
[INFO] [stdout] 18 |     character::complete::{alpha1, char, multispace0, none_of, space0},
[INFO] [stdout]    |                           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `num`
[INFO] [stdout]  --> src/generics.rs:1:28
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::{fmt::Formatter, num};
[INFO] [stdout]   |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `number`
[INFO] [stdout]  --> src/generics.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     number,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::_pcode::*`
[INFO] [stdout]   --> src/lib.rs:32:13
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub use crate::_pcode::*;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::_generics::*`
[INFO] [stdout]   --> src/lib.rs:37:13
[INFO] [stdout]    |
[INFO] [stdout] 37 |     pub use crate::_generics::*;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:346:5
[INFO] [stdout]     |
[INFO] [stdout] 306 | /     match a.strip_prefix("R") {
[INFO] [stdout] 307 | |         Some(b) => {
[INFO] [stdout] ...   |
[INFO] [stdout] 345 | |     }
[INFO] [stdout]     | |_____- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 346 |       todo!()
[INFO] [stdout]     |       ^^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `todo` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/generics.rs:41:45
[INFO] [stdout]    |
[INFO] [stdout] 41 |                 to_fill: (0..j).filter_map(|a| stack.pop()).collect(),
[INFO] [stdout]    |                                             ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/generics.rs:46:41
[INFO] [stdout]    |
[INFO] [stdout] 46 |             to_fill: (0..b).filter_map(|a| stack.pop()).collect(),
[INFO] [stdout]    |                                         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ARITY_KEY` is never used
[INFO] [stdout]  --> src/generics.rs:9:11
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub const ARITY_KEY: &'static str = "generic_params.modern";
[INFO] [stdout]   |           ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `GENERIC_KEY` is never used
[INFO] [stdout]   --> src/generics.rs:10:11
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub const GENERIC_KEY: &'static str = "generics.modern";
[INFO] [stdout]    |           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Mangle` is never used
[INFO] [stdout]   --> src/generics.rs:11:11
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub trait Mangle {
[INFO] [stdout]    |           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Mangled` is never constructed
[INFO] [stdout]   --> src/generics.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct Mangled<'a>(pub &'a (dyn Mangle + 'a));
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Param` is never used
[INFO] [stdout]   --> src/generics.rs:61:10
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub enum Param {
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `PExpr` is never used
[INFO] [stdout]  --> src/pcode.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub enum PExpr {
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Pat` is never constructed
[INFO] [stdout]   --> src/pcode.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Pat {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `Command { std: "docker" "inspect" "4b47761ffc361c3fab7ddc3169c9a27a360ebe7acc69aab597b4d7d2eb2715a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b47761ffc361c3fab7ddc3169c9a27a360ebe7acc69aab597b4d7d2eb2715a9", kill_on_drop: false }`
[INFO] [stdout] 4b47761ffc361c3fab7ddc3169c9a27a360ebe7acc69aab597b4d7d2eb2715a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] bae3bceeb363a147ffe57827b9c45c965c2e682a8b0a6bb3fc35f796f23a0219
[INFO] running `Command { std: "docker" "start" "-a" "bae3bceeb363a147ffe57827b9c45c965c2e682a8b0a6bb3fc35f796f23a0219", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `derive_more::Display`
[INFO] [stderr]   --> src/lib.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | use derive_more::Display;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `alpha1` and `is_not`
[INFO] [stderr]   --> src/lib.rs:17:23
[INFO] [stderr]    |
[INFO] [stderr] 17 |     bytes::complete::{is_not, tag, take, take_while_m_n},
[INFO] [stderr]    |                       ^^^^^^
[INFO] [stderr] 18 |     character::complete::{alpha1, char, multispace0, none_of, space0},
[INFO] [stderr]    |                           ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `num`
[INFO] [stderr]  --> src/generics.rs:1:28
[INFO] [stderr]   |
[INFO] [stderr] 1 | use core::{fmt::Formatter, num};
[INFO] [stderr]   |                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `number`
[INFO] [stderr]  --> src/generics.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     number,
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::_pcode::*`
[INFO] [stderr]   --> src/lib.rs:32:13
[INFO] [stderr]    |
[INFO] [stderr] 32 |     pub use crate::_pcode::*;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::_generics::*`
[INFO] [stderr]   --> src/lib.rs:37:13
[INFO] [stderr]    |
[INFO] [stderr] 37 |     pub use crate::_generics::*;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/lib.rs:346:5
[INFO] [stderr]     |
[INFO] [stderr] 306 | /     match a.strip_prefix("R") {
[INFO] [stderr] 307 | |         Some(b) => {
[INFO] [stderr] ...   |
[INFO] [stderr] 345 | |     }
[INFO] [stderr]     | |_____- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stderr] 346 |       todo!()
[INFO] [stderr]     |       ^^^^^^^ unreachable expression
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr]     = note: this warning originates in the macro `todo` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]   --> src/generics.rs:41:45
[INFO] [stderr]    |
[INFO] [stderr] 41 |                 to_fill: (0..j).filter_map(|a| stack.pop()).collect(),
[INFO] [stderr]    |                                             ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]   --> src/generics.rs:46:41
[INFO] [stderr]    |
[INFO] [stderr] 46 |             to_fill: (0..b).filter_map(|a| stack.pop()).collect(),
[INFO] [stderr]    |                                         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: constant `ARITY_KEY` is never used
[INFO] [stderr]  --> src/generics.rs:9:11
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub const ARITY_KEY: &'static str = "generic_params.modern";
[INFO] [stderr]   |           ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant `GENERIC_KEY` is never used
[INFO] [stderr]   --> src/generics.rs:10:11
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub const GENERIC_KEY: &'static str = "generics.modern";
[INFO] [stderr]    |           ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait `Mangle` is never used
[INFO] [stderr]   --> src/generics.rs:11:11
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub trait Mangle {
[INFO] [stderr]    |           ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Mangled` is never constructed
[INFO] [stderr]   --> src/generics.rs:19:12
[INFO] [stderr]    |
[INFO] [stderr] 19 | pub struct Mangled<'a>(pub &'a (dyn Mangle + 'a));
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Param` is never used
[INFO] [stderr]   --> src/generics.rs:61:10
[INFO] [stderr]    |
[INFO] [stderr] 61 | pub enum Param {
[INFO] [stderr]    |          ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `PExpr` is never used
[INFO] [stderr]  --> src/pcode.rs:5:10
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub enum PExpr {
[INFO] [stderr]   |          ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Pat` is never constructed
[INFO] [stderr]   --> src/pcode.rs:21:12
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub struct Pat {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `pit-core` (lib) generated 16 warnings (run `cargo fix --lib -p pit-core` to apply 6 suggestions)
[INFO] [stderr] warning: `pit-core` (lib test) generated 16 warnings (16 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/pit_core-fcebe990cf022bc5)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests pit_core
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "bae3bceeb363a147ffe57827b9c45c965c2e682a8b0a6bb3fc35f796f23a0219", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bae3bceeb363a147ffe57827b9c45c965c2e682a8b0a6bb3fc35f796f23a0219", kill_on_drop: false }`
[INFO] [stdout] bae3bceeb363a147ffe57827b9c45c965c2e682a8b0a6bb3fc35f796f23a0219