[INFO] fetching crate fjson 0.3.1...
[INFO] checking fjson-0.3.1 against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] extracting crate fjson 0.3.1 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate fjson 0.3.1 on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fjson 0.3.1
[INFO] finished tweaking crates.io crate fjson 0.3.1
[INFO] tweaked toml for crates.io crate fjson 0.3.1 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 15 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f4eed6dbf2a527a2b822bf00188b6813cc3c07202f2ddd28175a366d797b81a3
[INFO] running `Command { std: "docker" "start" "-a" "f4eed6dbf2a527a2b822bf00188b6813cc3c07202f2ddd28175a366d797b81a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f4eed6dbf2a527a2b822bf00188b6813cc3c07202f2ddd28175a366d797b81a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4eed6dbf2a527a2b822bf00188b6813cc3c07202f2ddd28175a366d797b81a3", kill_on_drop: false }`
[INFO] [stdout] f4eed6dbf2a527a2b822bf00188b6813cc3c07202f2ddd28175a366d797b81a3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] da1d7d60870e06f8a3a1c0ef5922cd5ebc2984ba2f81a6c931ca0cecd0267acf
[INFO] running `Command { std: "docker" "start" "-a" "da1d7d60870e06f8a3a1c0ef5922cd5ebc2984ba2f81a6c931ca0cecd0267acf", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling serde v1.0.209
[INFO] [stderr]     Checking equivalent v1.0.1
[INFO] [stderr]     Checking hashbrown v0.14.5
[INFO] [stderr]    Compiling serde_json v1.0.127
[INFO] [stderr]     Checking arrayvec v0.7.6
[INFO] [stderr]     Checking ryu v1.0.18
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]     Checking itoa v1.0.11
[INFO] [stderr]     Checking fjson v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/scanner.rs:250:51
[INFO] [stdout]     |
[INFO] [stdout] 250 |             token: Token::LineComment(&self.input[(start + 2..end)]),
[INFO] [stdout]     |                                                   ^              ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 250 -             token: Token::LineComment(&self.input[(start + 2..end)]),
[INFO] [stdout] 250 +             token: Token::LineComment(&self.input[start + 2..end]),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking indexmap v2.5.0
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]    Compiling serde_derive v1.0.209
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/scanner.rs:250:51
[INFO] [stdout]     |
[INFO] [stdout] 250 |             token: Token::LineComment(&self.input[(start + 2..end)]),
[INFO] [stdout]     |                                                   ^              ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 250 -             token: Token::LineComment(&self.input[(start + 2..end)]),
[INFO] [stdout] 250 +             token: Token::LineComment(&self.input[start + 2..end]),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.31s
[INFO] running `Command { std: "docker" "inspect" "da1d7d60870e06f8a3a1c0ef5922cd5ebc2984ba2f81a6c931ca0cecd0267acf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da1d7d60870e06f8a3a1c0ef5922cd5ebc2984ba2f81a6c931ca0cecd0267acf", kill_on_drop: false }`
[INFO] [stdout] da1d7d60870e06f8a3a1c0ef5922cd5ebc2984ba2f81a6c931ca0cecd0267acf