[INFO] fetching crate sourcenav 0.2.0...
[INFO] checking sourcenav-0.2.0 against 1.55.0 for beta-1.56-3
[INFO] extracting crate sourcenav 0.2.0 into /workspace/builds/worker-119/source
[INFO] validating manifest of crates.io crate sourcenav 0.2.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sourcenav 0.2.0
[INFO] finished tweaking crates.io crate sourcenav 0.2.0
[INFO] tweaked toml for crates.io crate sourcenav 0.2.0 written to /workspace/builds/worker-119/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-119/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-119/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3295633414cb34f05ecd986e4386e685337abf3b5114c7adf7241bd78b7e9ab5
[INFO] running `Command { std: "docker" "start" "-a" "3295633414cb34f05ecd986e4386e685337abf3b5114c7adf7241bd78b7e9ab5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3295633414cb34f05ecd986e4386e685337abf3b5114c7adf7241bd78b7e9ab5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3295633414cb34f05ecd986e4386e685337abf3b5114c7adf7241bd78b7e9ab5", kill_on_drop: false }`
[INFO] [stdout] 3295633414cb34f05ecd986e4386e685337abf3b5114c7adf7241bd78b7e9ab5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-119/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-119/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] da3b99cd3ab9420eb50ddf4aa6f5e620a4124f3bdf4f4a2ef9ad5168a206a2a4
[INFO] running `Command { std: "docker" "start" "-a" "da3b99cd3ab9420eb50ddf4aa6f5e620a4124f3bdf4f4a2ef9ad5168a206a2a4", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.80
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling rustversion v1.0.5
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking smallvec v0.6.14
[INFO] [stderr]    Compiling err-derive v0.2.4
[INFO] [stderr]    Compiling syn_util v0.4.2
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling euclid_macros v0.1.0
[INFO] [stderr]    Compiling bitbuffer_derive v0.7.1
[INFO] [stderr]     Checking euclid v0.19.9
[INFO] [stderr]     Checking bitbuffer v0.7.1
[INFO] [stderr]     Checking aabb-quadtree v0.2.0
[INFO] [stderr]     Checking sourcenav v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> benches/bench.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]  --> benches/bench.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::fs;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sourcenav` due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "da3b99cd3ab9420eb50ddf4aa6f5e620a4124f3bdf4f4a2ef9ad5168a206a2a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da3b99cd3ab9420eb50ddf4aa6f5e620a4124f3bdf4f4a2ef9ad5168a206a2a4", kill_on_drop: false }`
[INFO] [stdout] da3b99cd3ab9420eb50ddf4aa6f5e620a4124f3bdf4f4a2ef9ad5168a206a2a4
