[INFO] fetching crate fjson 0.3.1...
[INFO] checking fjson-0.3.1 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate fjson 0.3.1 into /workspace/builds/worker-7-tc2/source
[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-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate fjson 0.3.1 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]     Updating crates.io index
[INFO] [stderr]      Locking 14 packages to latest compatible versions
[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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] b556cc10c618bd844c0a2c40076b55f2a3e56ab0f9152e5a504c021e249c3789
[INFO] running `Command { std: "docker" "start" "-a" "b556cc10c618bd844c0a2c40076b55f2a3e56ab0f9152e5a504c021e249c3789", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b556cc10c618bd844c0a2c40076b55f2a3e56ab0f9152e5a504c021e249c3789", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b556cc10c618bd844c0a2c40076b55f2a3e56ab0f9152e5a504c021e249c3789", kill_on_drop: false }`
[INFO] [stdout] b556cc10c618bd844c0a2c40076b55f2a3e56ab0f9152e5a504c021e249c3789
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] e55c470107c9fbbac9f06599c730df7933df730bc7749f8a0a51998240874580
[INFO] running `Command { std: "docker" "start" "-a" "e55c470107c9fbbac9f06599c730df7933df730bc7749f8a0a51998240874580", kill_on_drop: false }`
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling serde_json v1.0.140
[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]    Compiling syn v2.0.104
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/ast.rs:67:21
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub fn parse(input: &str) -> Result<Root, Error> {
[INFO] [stdout]    |                     ^^^^            ---- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub fn parse(input: &str) -> Result<Root<'_>, Error> {
[INFO] [stdout]    |                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]     Checking serde v1.0.219
[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: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/ast.rs:67:21
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub fn parse(input: &str) -> Result<Root, Error> {
[INFO] [stdout]    |                     ^^^^            ---- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub fn parse(input: &str) -> Result<Root<'_>, Error> {
[INFO] [stdout]    |                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.35s
[INFO] running `Command { std: "docker" "inspect" "e55c470107c9fbbac9f06599c730df7933df730bc7749f8a0a51998240874580", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e55c470107c9fbbac9f06599c730df7933df730bc7749f8a0a51998240874580", kill_on_drop: false }`
[INFO] [stdout] e55c470107c9fbbac9f06599c730df7933df730bc7749f8a0a51998240874580