[INFO] cloning repository https://github.com/PintTheDragon/Peanuts-Lab-Decoder
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/PintTheDragon/Peanuts-Lab-Decoder" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPintTheDragon%2FPeanuts-Lab-Decoder", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPintTheDragon%2FPeanuts-Lab-Decoder'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ad64973c995a809ebdb87a625be92973f9f37eb4
[INFO] checking PintTheDragon/Peanuts-Lab-Decoder against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPintTheDragon%2FPeanuts-Lab-Decoder" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/PintTheDragon/Peanuts-Lab-Decoder on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/PintTheDragon/Peanuts-Lab-Decoder
[INFO] finished tweaking git repo https://github.com/PintTheDragon/Peanuts-Lab-Decoder
[INFO] tweaked toml for git repo https://github.com/PintTheDragon/Peanuts-Lab-Decoder written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/PintTheDragon/Peanuts-Lab-Decoder 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rust-embed-impl v6.1.0
[INFO] [stderr]   Downloaded rust-embed-utils v7.0.0
[INFO] [stderr]   Downloaded substring v1.4.5
[INFO] [stderr]   Downloaded rust-embed v6.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a13809356c9d338c022b7518e019c955fc972bd25feb68197da1b2e369faa7a1
[INFO] running `Command { std: "docker" "start" "-a" "a13809356c9d338c022b7518e019c955fc972bd25feb68197da1b2e369faa7a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a13809356c9d338c022b7518e019c955fc972bd25feb68197da1b2e369faa7a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a13809356c9d338c022b7518e019c955fc972bd25feb68197da1b2e369faa7a1", kill_on_drop: false }`
[INFO] [stdout] a13809356c9d338c022b7518e019c955fc972bd25feb68197da1b2e369faa7a1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f8cfd4b7f26aac92f289995a0e03538f34e6b9715366a22c68df39d09cb2fa1a
[INFO] running `Command { std: "docker" "start" "-a" "f8cfd4b7f26aac92f289995a0e03538f34e6b9715366a22c68df39d09cb2fa1a", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.14.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling cpufeatures v0.2.1
[INFO] [stderr]    Compiling opaque-debug v0.3.0
[INFO] [stderr]    Compiling syn v1.0.80
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling substring v1.4.5
[INFO] [stderr]     Checking sha2 v0.9.8
[INFO] [stderr]     Checking rust-embed-utils v7.0.0
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling block-buffer v0.9.0
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling rust-embed-impl v6.1.0
[INFO] [stderr]     Checking rust-embed v6.2.0
[INFO] [stderr]     Checking PeanutCode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::iter::Map`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::iter::Map;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::Map`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::iter::Map;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Index`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::ops::Index;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Index`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::ops::Index;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::slice::Iter`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::slice::Iter;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::slice::Iter`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::slice::Iter;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.61s
[INFO] running `Command { std: "docker" "inspect" "f8cfd4b7f26aac92f289995a0e03538f34e6b9715366a22c68df39d09cb2fa1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8cfd4b7f26aac92f289995a0e03538f34e6b9715366a22c68df39d09cb2fa1a", kill_on_drop: false }`
[INFO] [stdout] f8cfd4b7f26aac92f289995a0e03538f34e6b9715366a22c68df39d09cb2fa1a
[INFO] checking PintTheDragon/Peanuts-Lab-Decoder against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPintTheDragon%2FPeanuts-Lab-Decoder" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/PintTheDragon/Peanuts-Lab-Decoder on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/PintTheDragon/Peanuts-Lab-Decoder
[INFO] finished tweaking git repo https://github.com/PintTheDragon/Peanuts-Lab-Decoder
[INFO] tweaked toml for git repo https://github.com/PintTheDragon/Peanuts-Lab-Decoder written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/PintTheDragon/Peanuts-Lab-Decoder 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6c7b801878f317bed83126d5b6ba2a1a03240996467deec7b542aa4ddd0897b4
[INFO] running `Command { std: "docker" "start" "-a" "6c7b801878f317bed83126d5b6ba2a1a03240996467deec7b542aa4ddd0897b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6c7b801878f317bed83126d5b6ba2a1a03240996467deec7b542aa4ddd0897b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c7b801878f317bed83126d5b6ba2a1a03240996467deec7b542aa4ddd0897b4", kill_on_drop: false }`
[INFO] [stdout] 6c7b801878f317bed83126d5b6ba2a1a03240996467deec7b542aa4ddd0897b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d46dd07cb80b4d361629e69976cdcfdfae3a9260085f455edc30bdfca87cc8f5
[INFO] running `Command { std: "docker" "start" "-a" "d46dd07cb80b4d361629e69976cdcfdfae3a9260085f455edc30bdfca87cc8f5", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling opaque-debug v0.3.0
[INFO] [stderr]    Compiling syn v1.0.80
[INFO] [stderr]    Compiling cpufeatures v0.2.1
[INFO] [stderr]    Compiling typenum v1.14.0
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling substring v1.4.5
[INFO] [stderr]     Checking sha2 v0.9.8
[INFO] [stderr]     Checking rust-embed-utils v7.0.0
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling block-buffer v0.9.0
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling rust-embed-impl v6.1.0
[INFO] [stderr]     Checking rust-embed v6.2.0
[INFO] [stderr]     Checking PeanutCode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::iter::Map`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::iter::Map;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Index`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::ops::Index;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::slice::Iter`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::slice::Iter;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::Map`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::iter::Map;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Index`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::ops::Index;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::slice::Iter`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::slice::Iter;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.35s
[INFO] running `Command { std: "docker" "inspect" "d46dd07cb80b4d361629e69976cdcfdfae3a9260085f455edc30bdfca87cc8f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d46dd07cb80b4d361629e69976cdcfdfae3a9260085f455edc30bdfca87cc8f5", kill_on_drop: false }`
[INFO] [stdout] d46dd07cb80b4d361629e69976cdcfdfae3a9260085f455edc30bdfca87cc8f5