[INFO] fetching crate json_lexer 0.0.1...
[INFO] building json_lexer-0.0.1 against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] extracting crate json_lexer 0.0.1 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate json_lexer 0.0.1 on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5c50b1cf7ba25a59e7afec27669701082ac76f9326a10d6dae85345ba10a22b7
[INFO] running `Command { std: "docker" "start" "-a" "5c50b1cf7ba25a59e7afec27669701082ac76f9326a10d6dae85345ba10a22b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5c50b1cf7ba25a59e7afec27669701082ac76f9326a10d6dae85345ba10a22b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c50b1cf7ba25a59e7afec27669701082ac76f9326a10d6dae85345ba10a22b7", kill_on_drop: false }`
[INFO] [stdout] 5c50b1cf7ba25a59e7afec27669701082ac76f9326a10d6dae85345ba10a22b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] df256e2fa384c1609697d3093d7b088b21181063c61c633b5727ca028f2aec44
[INFO] running `Command { std: "docker" "start" "-a" "df256e2fa384c1609697d3093d7b088b21181063c61c633b5727ca028f2aec44", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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 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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "df256e2fa384c1609697d3093d7b088b21181063c61c633b5727ca028f2aec44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df256e2fa384c1609697d3093d7b088b21181063c61c633b5727ca028f2aec44", kill_on_drop: false }`
[INFO] [stdout] df256e2fa384c1609697d3093d7b088b21181063c61c633b5727ca028f2aec44
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dfc5da968a83fb3e3f5e2a74dd9900a696c3e34e00ac98f784cd89fa0234ce2b
[INFO] running `Command { std: "docker" "start" "-a" "dfc5da968a83fb3e3f5e2a74dd9900a696c3e34e00ac98f784cd89fa0234ce2b", kill_on_drop: false }`
[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] [stderr]    Compiling json_lexer v0.0.1 (/opt/rustwide/workdir)
[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: 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: `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 `test` profile [unoptimized + debuginfo] target(s) in 0.19s
[INFO] running `Command { std: "docker" "inspect" "dfc5da968a83fb3e3f5e2a74dd9900a696c3e34e00ac98f784cd89fa0234ce2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfc5da968a83fb3e3f5e2a74dd9900a696c3e34e00ac98f784cd89fa0234ce2b", kill_on_drop: false }`
[INFO] [stdout] dfc5da968a83fb3e3f5e2a74dd9900a696c3e34e00ac98f784cd89fa0234ce2b