[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#91c0823ee63e793d990bb9fed898dc95b5d6db51 for pr-125741
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkonnik%2Frust-json-parser" "/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/konnik/rust-json-parser on toolchain 91c0823ee63e793d990bb9fed898dc95b5d6db51
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+91c0823ee63e793d990bb9fed898dc95b5d6db51" "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-4-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" "+91c0823ee63e793d990bb9fed898dc95b5d6db51" "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
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking konnik/rust-json-parser against try#0525276e4a85ae0a91f6f7447e501e2981e77908 for pr-125741
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkonnik%2Frust-json-parser" "/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/konnik/rust-json-parser on toolchain 0525276e4a85ae0a91f6f7447e501e2981e77908
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0525276e4a85ae0a91f6f7447e501e2981e77908" "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-4-tc2/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" "+0525276e4a85ae0a91f6f7447e501e2981e77908" "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-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+0525276e4a85ae0a91f6f7447e501e2981e77908" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1f9b47e1316f78d10a87b933502c6d738cb92480177a871d40a27e36d1196bc2
[INFO] running `Command { std: "docker" "start" "-a" "1f9b47e1316f78d10a87b933502c6d738cb92480177a871d40a27e36d1196bc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1f9b47e1316f78d10a87b933502c6d738cb92480177a871d40a27e36d1196bc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f9b47e1316f78d10a87b933502c6d738cb92480177a871d40a27e36d1196bc2", kill_on_drop: false }`
[INFO] [stdout] 1f9b47e1316f78d10a87b933502c6d738cb92480177a871d40a27e36d1196bc2
[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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+0525276e4a85ae0a91f6f7447e501e2981e77908" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 85788cab1f5f1e9f2877181374f28fc7a61d2fb9461f15bbc052ec6f944068c7
[INFO] running `Command { std: "docker" "start" "-a" "85788cab1f5f1e9f2877181374f28fc7a61d2fb9461f15bbc052ec6f944068c7", 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: 5 warnings emitted
[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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] running `Command { std: "docker" "inspect" "85788cab1f5f1e9f2877181374f28fc7a61d2fb9461f15bbc052ec6f944068c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85788cab1f5f1e9f2877181374f28fc7a61d2fb9461f15bbc052ec6f944068c7", kill_on_drop: false }`
[INFO] [stdout] 85788cab1f5f1e9f2877181374f28fc7a61d2fb9461f15bbc052ec6f944068c7