[INFO] fetching crate json_lexer 0.0.1...
[INFO] checking json_lexer-0.0.1 against try#c659ee110de67e82444e4b6c8407c1a9af9c2cf6 for pr-145608-1
[INFO] extracting crate json_lexer 0.0.1 into /workspace/builds/worker-4-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-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate json_lexer 0.0.1 on toolchain c659ee110de67e82444e4b6c8407c1a9af9c2cf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "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" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "generate-lockfile" "--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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a5d1aab2c325dd3000dc452ab63482314377ff014acb36bf5167776beccada71
[INFO] running `Command { std: "docker" "start" "-a" "a5d1aab2c325dd3000dc452ab63482314377ff014acb36bf5167776beccada71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a5d1aab2c325dd3000dc452ab63482314377ff014acb36bf5167776beccada71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5d1aab2c325dd3000dc452ab63482314377ff014acb36bf5167776beccada71", kill_on_drop: false }`
[INFO] [stdout] a5d1aab2c325dd3000dc452ab63482314377ff014acb36bf5167776beccada71
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a00125aec04a45a0831a4f441a5aab604320b79dc25c807e38e876c3796751f1
[INFO] running `Command { std: "docker" "start" "-a" "a00125aec04a45a0831a4f441a5aab604320b79dc25c807e38e876c3796751f1", 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: enum `StrInputError` is never used
[INFO] [stdout]   --> src/input.rs:35:10
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub enum StrInputError {
[INFO] [stdout]    |          ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` 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] 
[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: 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: struct `Utf8Error` is never constructed
[INFO] [stdout]  --> src/utf8.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Utf8Error(u32);
[INFO] [stdout]   |            ^^^^^^^^^
[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" "a00125aec04a45a0831a4f441a5aab604320b79dc25c807e38e876c3796751f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a00125aec04a45a0831a4f441a5aab604320b79dc25c807e38e876c3796751f1", kill_on_drop: false }`
[INFO] [stdout] a00125aec04a45a0831a4f441a5aab604320b79dc25c807e38e876c3796751f1