[INFO] fetching crate xlang_frontend 0.1.6...
[INFO] checking xlang_frontend-0.1.6 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate xlang_frontend 0.1.6 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate xlang_frontend 0.1.6
[INFO] finished tweaking crates.io crate xlang_frontend 0.1.6
[INFO] tweaked toml for crates.io crate xlang_frontend 0.1.6 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate xlang_frontend 0.1.6 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] crate crates.io crate xlang_frontend 0.1.6 already has a lockfile, it will not be regenerated
[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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 01dd2417205120259a7224188b968817a952fa4f3a778c69dc0549af795a5ddc
[INFO] running `Command { std: "docker" "start" "-a" "01dd2417205120259a7224188b968817a952fa4f3a778c69dc0549af795a5ddc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "01dd2417205120259a7224188b968817a952fa4f3a778c69dc0549af795a5ddc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01dd2417205120259a7224188b968817a952fa4f3a778c69dc0549af795a5ddc", kill_on_drop: false }`
[INFO] [stdout] 01dd2417205120259a7224188b968817a952fa4f3a778c69dc0549af795a5ddc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 97704bb307e96e4c5ff36ed1a790635739f91f688f03828c0f56b40d79e13568
[INFO] running `Command { std: "docker" "start" "-a" "97704bb307e96e4c5ff36ed1a790635739f91f688f03828c0f56b40d79e13568", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.94
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking rustc-hash v2.1.1
[INFO] [stderr]     Checking unicode-segmentation v1.12.0
[INFO] [stderr]     Checking base64 v0.22.1
[INFO] [stderr]     Checking colored v3.0.0
[INFO] [stderr]     Checking libloading v0.8.6
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]     Checking regex-automata v0.4.9
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]     Checking regex v1.11.1
[INFO] [stderr]     Checking serde v1.0.219
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking serde_json v1.0.140
[INFO] [stderr]     Checking xlang_vm_core v0.2.0
[INFO] [stderr]     Checking xlang_frontend v0.1.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/parser/lexer.rs:90:27
[INFO] [stdout]    |
[INFO] [stdout] 90 |     pub fn tokenize(code: &str) -> Vec<super::Token> {
[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] 90 |     pub fn tokenize(code: &str) -> Vec<super::Token<'_>> {
[INFO] [stdout]    |                                                    ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/parser/lexer.rs:90:27
[INFO] [stdout]    |
[INFO] [stdout] 90 |     pub fn tokenize(code: &str) -> Vec<super::Token> {
[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] 90 |     pub fn tokenize(code: &str) -> Vec<super::Token<'_>> {
[INFO] [stdout]    |                                                    ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.58s
[INFO] running `Command { std: "docker" "inspect" "97704bb307e96e4c5ff36ed1a790635739f91f688f03828c0f56b40d79e13568", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97704bb307e96e4c5ff36ed1a790635739f91f688f03828c0f56b40d79e13568", kill_on_drop: false }`
[INFO] [stdout] 97704bb307e96e4c5ff36ed1a790635739f91f688f03828c0f56b40d79e13568