[INFO] fetching crate pit-core 0.4.2...
[INFO] checking pit-core-0.4.2 against master#dc8fe1f81c6cf13c0987944c525b2aa81625b5d0 for pr-133502-4
[INFO] extracting crate pit-core 0.4.2 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate pit-core 0.4.2 on toolchain dc8fe1f81c6cf13c0987944c525b2aa81625b5d0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dc8fe1f81c6cf13c0987944c525b2aa81625b5d0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pit-core 0.4.2
[INFO] finished tweaking crates.io crate pit-core 0.4.2
[INFO] tweaked toml for crates.io crate pit-core 0.4.2 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate pit-core 0.4.2 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" "+dc8fe1f81c6cf13c0987944c525b2aa81625b5d0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+dc8fe1f81c6cf13c0987944c525b2aa81625b5d0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2ebe8c5ee8f78ab79f918a4cb8f502c185dfbdbf787de66108bfeed732507e39
[INFO] running `Command { std: "docker" "start" "-a" "2ebe8c5ee8f78ab79f918a4cb8f502c185dfbdbf787de66108bfeed732507e39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ebe8c5ee8f78ab79f918a4cb8f502c185dfbdbf787de66108bfeed732507e39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ebe8c5ee8f78ab79f918a4cb8f502c185dfbdbf787de66108bfeed732507e39", kill_on_drop: false }`
[INFO] [stdout] 2ebe8c5ee8f78ab79f918a4cb8f502c185dfbdbf787de66108bfeed732507e39
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+dc8fe1f81c6cf13c0987944c525b2aa81625b5d0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fb7032524a9bd1be2292d354c8f82b642e9a7c7768e097f38ada9dee43a17a00
[INFO] running `Command { std: "docker" "start" "-a" "fb7032524a9bd1be2292d354c8f82b642e9a7c7768e097f38ada9dee43a17a00", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]     Checking keccak v0.1.5
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking sha3 v0.10.8
[INFO] [stderr]     Checking nom v8.0.0
[INFO] [stderr]    Compiling derive_more-impl v2.0.1
[INFO] [stderr]     Checking derive_more v2.0.1
[INFO] [stderr]     Checking pit-core v0.4.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]   --> src/lib.rs:11:17
[INFO] [stdout]    |
[INFO] [stdout] 11 | use core::fmt::{self, 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:14:23
[INFO] [stdout]    |
[INFO] [stdout] 14 |     bytes::complete::{is_not, tag, take, take_while_m_n},
[INFO] [stdout]    |                       ^^^^^^
[INFO] [stdout] 15 |     character::complete::{alpha1, alphanumeric1, char, multispace0},
[INFO] [stdout]    |                           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::fmt::Write`
[INFO] [stdout]    --> src/lib.rs:280:13
[INFO] [stdout]     |
[INFO] [stdout] 280 |         use core::fmt::Write;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]   --> src/lib.rs:11:17
[INFO] [stdout]    |
[INFO] [stdout] 11 | use core::fmt::{self, 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:14:23
[INFO] [stdout]    |
[INFO] [stdout] 14 |     bytes::complete::{is_not, tag, take, take_while_m_n},
[INFO] [stdout]    |                       ^^^^^^
[INFO] [stdout] 15 |     character::complete::{alpha1, alphanumeric1, char, multispace0},
[INFO] [stdout]    |                           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::fmt::Write`
[INFO] [stdout]    --> src/lib.rs:280:13
[INFO] [stdout]     |
[INFO] [stdout] 280 |         use core::fmt::Write;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:205:5
[INFO] [stdout]     |
[INFO] [stdout] 165 | /     match a.strip_prefix("R") {
[INFO] [stdout] 166 | |         Some(b) => {
[INFO] [stdout] ...   |
[INFO] [stdout] 204 | |     }
[INFO] [stdout]     | |_____- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 205 |       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: unreachable expression
[INFO] [stdout]    --> src/lib.rs:205:5
[INFO] [stdout]     |
[INFO] [stdout] 165 | /     match a.strip_prefix("R") {
[INFO] [stdout] 166 | |         Some(b) => {
[INFO] [stdout] ...   |
[INFO] [stdout] 204 | |     }
[INFO] [stdout]     | |_____- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 205 |       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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.62s
[INFO] running `Command { std: "docker" "inspect" "fb7032524a9bd1be2292d354c8f82b642e9a7c7768e097f38ada9dee43a17a00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb7032524a9bd1be2292d354c8f82b642e9a7c7768e097f38ada9dee43a17a00", kill_on_drop: false }`
[INFO] [stdout] fb7032524a9bd1be2292d354c8f82b642e9a7c7768e097f38ada9dee43a17a00