[INFO] cloning repository https://github.com/konnik/rust-json-parser
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/konnik/rust-json-parser" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkonnik%2Frust-json-parser", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkonnik%2Frust-json-parser'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 62d946fd0b9f2f6e032eb006fbc6aa21dccb2a04
[INFO] checking konnik/rust-json-parser against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkonnik%2Frust-json-parser" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/konnik/rust-json-parser on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/konnik/rust-json-parser
[INFO] finished tweaking git repo https://github.com/konnik/rust-json-parser
[INFO] tweaked toml for git repo https://github.com/konnik/rust-json-parser written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/konnik/rust-json-parser 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 37c26bb0db773aa0336606262289dc469f83469cc32fb0343d62d5e4051edab9
[INFO] running `Command { std: "docker" "start" "-a" "37c26bb0db773aa0336606262289dc469f83469cc32fb0343d62d5e4051edab9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "37c26bb0db773aa0336606262289dc469f83469cc32fb0343d62d5e4051edab9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37c26bb0db773aa0336606262289dc469f83469cc32fb0343d62d5e4051edab9", kill_on_drop: false }`
[INFO] [stdout] 37c26bb0db773aa0336606262289dc469f83469cc32fb0343d62d5e4051edab9
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 42b1d628a60b8f9643a8fcd132a2d6571664a72aad9c327832954beca45f30f9
[INFO] running `Command { std: "docker" "start" "-a" "42b1d628a60b8f9643a8fcd132a2d6571664a72aad9c327832954beca45f30f9", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-json-parser v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/parser.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/parser.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Number` is never constructed
[INFO] [stdout]  --> src/parser.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum JsonValue {
[INFO] [stdout]   |          --------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 7 |     Number(f64),
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `JsonValue` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Parser2` is never used
[INFO] [stdout]   --> src/parser.rs:54:6
[INFO] [stdout]    |
[INFO] [stdout] 54 | type Parser2<'a, T> = dyn Fn(&'a str) -> Option<(&'a str, T)>;
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `onenine` is never used
[INFO] [stdout]    --> src/parser.rs:158:4
[INFO] [stdout]     |
[INFO] [stdout] 158 | fn onenine<'a>() -> impl Parser<'a, char> {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `digit` is never used
[INFO] [stdout]    --> src/parser.rs:162:4
[INFO] [stdout]     |
[INFO] [stdout] 162 | fn digit<'a>() -> impl Parser<'a, char> {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Number` is never constructed
[INFO] [stdout]  --> src/parser.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum JsonValue {
[INFO] [stdout]   |          --------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 7 |     Number(f64),
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `JsonValue` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Parser2` is never used
[INFO] [stdout]   --> src/parser.rs:54:6
[INFO] [stdout]    |
[INFO] [stdout] 54 | type Parser2<'a, T> = dyn Fn(&'a str) -> Option<(&'a str, T)>;
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `onenine` is never used
[INFO] [stdout]    --> src/parser.rs:158:4
[INFO] [stdout]     |
[INFO] [stdout] 158 | fn onenine<'a>() -> impl Parser<'a, char> {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `digit` is never used
[INFO] [stdout]    --> src/parser.rs:162:4
[INFO] [stdout]     |
[INFO] [stdout] 162 | fn digit<'a>() -> impl Parser<'a, char> {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "42b1d628a60b8f9643a8fcd132a2d6571664a72aad9c327832954beca45f30f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42b1d628a60b8f9643a8fcd132a2d6571664a72aad9c327832954beca45f30f9", kill_on_drop: false }`
[INFO] [stdout] 42b1d628a60b8f9643a8fcd132a2d6571664a72aad9c327832954beca45f30f9