[INFO] fetching crate json_lexer 0.0.1...
[INFO] checking json_lexer-0.0.1 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate json_lexer 0.0.1 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate json_lexer 0.0.1
[INFO] finished tweaking crates.io crate json_lexer 0.0.1
[INFO] tweaked toml for crates.io crate json_lexer 0.0.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate json_lexer 0.0.1 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eef14114c21825768954090fe48611a1d3b553d0265e7d7c1223c3bfd9594cb5
[INFO] running `Command { std: "docker" "start" "-a" "eef14114c21825768954090fe48611a1d3b553d0265e7d7c1223c3bfd9594cb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eef14114c21825768954090fe48611a1d3b553d0265e7d7c1223c3bfd9594cb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eef14114c21825768954090fe48611a1d3b553d0265e7d7c1223c3bfd9594cb5", kill_on_drop: false }`
[INFO] [stdout] eef14114c21825768954090fe48611a1d3b553d0265e7d7c1223c3bfd9594cb5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6a541684c69f5ef6b71ba06f3ba5ea7b61fa8a8b334bf2ff9bef5620c9e02185
[INFO] running `Command { std: "docker" "start" "-a" "6a541684c69f5ef6b71ba06f3ba5ea7b61fa8a8b334bf2ff9bef5620c9e02185", kill_on_drop: false }`
[INFO] [stderr]     Checking json_lexer v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `core::convert::Infallible`
[INFO] [stdout]  --> src/input.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use core::convert::Infallible;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::convert::Infallible`
[INFO] [stdout]  --> src/input.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use core::convert::Infallible;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]   --> src/value.rs:33:47
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn parse_number(&mut self, initial: char, input: &mut I) -> Result<Self::NumberType, I::Error> {
[INFO] [stdout]    |                                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StrInput` is never constructed
[INFO] [stdout]   --> src/input.rs:50:12
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub struct StrInput<'a>(pub &'a str);
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BytesInput` is never constructed
[INFO] [stdout]   --> src/input.rs:72:12
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub struct BytesInput<'a>(pub &'a [u8]);
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `token`
[INFO] [stdout]    --> src/lexer.rs:121:16
[INFO] [stdout]     |
[INFO] [stdout] 121 |             Ok(token) => {}
[INFO] [stdout]     |                ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]   --> src/value.rs:33:47
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn parse_number(&mut self, initial: char, input: &mut I) -> Result<Self::NumberType, I::Error> {
[INFO] [stdout]    |                                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "6a541684c69f5ef6b71ba06f3ba5ea7b61fa8a8b334bf2ff9bef5620c9e02185", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a541684c69f5ef6b71ba06f3ba5ea7b61fa8a8b334bf2ff9bef5620c9e02185", kill_on_drop: false }`
[INFO] [stdout] 6a541684c69f5ef6b71ba06f3ba5ea7b61fa8a8b334bf2ff9bef5620c9e02185