[INFO] fetching crate livetex 0.3.0...
[INFO] testing livetex-0.3.0 against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1
[INFO] extracting crate livetex 0.3.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate livetex 0.3.0
[INFO] finished tweaking crates.io crate livetex 0.3.0
[INFO] tweaked toml for crates.io crate livetex 0.3.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate livetex 0.3.0 on toolchain b83b707f97d809763b7861afa7638871f3339a33
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate livetex 0.3.0 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" "+b83b707f97d809763b7861afa7638871f3339a33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bb0c5c913a1c54d780b49edb28d0f9494dd2d10811f74053e8e6aef335b769df
[INFO] running `Command { std: "docker" "start" "-a" "bb0c5c913a1c54d780b49edb28d0f9494dd2d10811f74053e8e6aef335b769df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bb0c5c913a1c54d780b49edb28d0f9494dd2d10811f74053e8e6aef335b769df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb0c5c913a1c54d780b49edb28d0f9494dd2d10811f74053e8e6aef335b769df", kill_on_drop: false }`
[INFO] [stdout] bb0c5c913a1c54d780b49edb28d0f9494dd2d10811f74053e8e6aef335b769df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b4579ab362ff726cd083d51871dc5dd1db61fa90fb51c7de768d36e50f063ea5
[INFO] running `Command { std: "docker" "start" "-a" "b4579ab362ff726cd083d51871dc5dd1db61fa90fb51c7de768d36e50f063ea5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]    Compiling bytes v1.9.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling tracing-core v0.1.33
[INFO] [stderr]    Compiling indexmap v2.7.0
[INFO] [stderr]    Compiling serde v1.0.217
[INFO] [stderr]    Compiling anyhow v1.0.95
[INFO] [stderr]    Compiling serde_json v1.0.135
[INFO] [stderr]    Compiling clap_builder v4.5.26
[INFO] [stderr]    Compiling temp-dir v0.1.14
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling http v1.2.0
[INFO] [stderr]    Compiling syn v2.0.96
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]    Compiling mio v1.0.3
[INFO] [stderr]    Compiling signal-hook-registry v1.4.2
[INFO] [stderr]    Compiling socket2 v0.5.8
[INFO] [stderr]    Compiling parking_lot v0.12.3
[INFO] [stderr]    Compiling http-body v1.0.1
[INFO] [stderr]    Compiling http-body-util v0.1.2
[INFO] [stderr]    Compiling regex v1.11.1
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.217
[INFO] [stderr]    Compiling clap_derive v4.5.24
[INFO] [stderr]    Compiling env_filter v0.1.3
[INFO] [stderr]    Compiling env_logger v0.11.6
[INFO] [stderr]    Compiling tokio v1.43.0
[INFO] [stderr]    Compiling lazy-regex-proc_macros v3.4.1
[INFO] [stderr]    Compiling lazy-regex v3.4.1
[INFO] [stderr]    Compiling clap v4.5.26
[INFO] [stderr]    Compiling tokio-util v0.7.13
[INFO] [stderr]    Compiling h2 v0.4.7
[INFO] [stderr]    Compiling hyper v1.5.2
[INFO] [stderr]    Compiling hyper-util v0.1.10
[INFO] [stderr]    Compiling livetex v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> src/tex_monitor.rs:55:12
[INFO] [stdout]    |
[INFO] [stdout] 55 |         if let Some(out_path) = out_path && pdf_path.exists() {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env::temp_dir`
[INFO] [stdout]  --> src/tex_monitor.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::env::temp_dir;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ffi::OsStr`
[INFO] [stdout]  --> src/tex_monitor.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::ffi::OsStr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/tex_monitor.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/tex_monitor.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::io::Read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SystemTime`
[INFO] [stdout]   --> src/tex_monitor.rs:12:27
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::time::{Duration, SystemTime};
[INFO] [stdout]    |                           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ARGS_SHARED`
[INFO] [stdout]  --> src/server.rs:2:25
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::{mutex_lock, ARGS_SHARED, COMPILED_PATH};
[INFO] [stdout]   |                         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `header`
[INFO] [stdout]  --> src/server.rs:8:13
[INFO] [stdout]   |
[INFO] [stdout] 8 | use hyper::{header, Method, Request, Response, StatusCode};
[INFO] [stdout]   |             ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `let_chains` has been stable since 1.88.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(let_chains)]
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `livetex` (lib) due to 1 previous error; 8 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "b4579ab362ff726cd083d51871dc5dd1db61fa90fb51c7de768d36e50f063ea5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4579ab362ff726cd083d51871dc5dd1db61fa90fb51c7de768d36e50f063ea5", kill_on_drop: false }`
[INFO] [stdout] b4579ab362ff726cd083d51871dc5dd1db61fa90fb51c7de768d36e50f063ea5