[INFO] fetching crate encoding-next-index-singlebyte 1.20180106.0...
[INFO] testing encoding-next-index-singlebyte-1.20180106.0 against 1.76.0 for beta-1.77-1
[INFO] extracting crate encoding-next-index-singlebyte 1.20180106.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate encoding-next-index-singlebyte 1.20180106.0 on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate encoding-next-index-singlebyte 1.20180106.0
[INFO] finished tweaking crates.io crate encoding-next-index-singlebyte 1.20180106.0
[INFO] tweaked toml for crates.io crate encoding-next-index-singlebyte 1.20180106.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded encoding-next_index_tests v0.1.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eb633dafea70898dab785b23badebf199b7de1d0e12d96df7d060a297b4a9fc9
[INFO] running `Command { std: "docker" "start" "-a" "eb633dafea70898dab785b23badebf199b7de1d0e12d96df7d060a297b4a9fc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eb633dafea70898dab785b23badebf199b7de1d0e12d96df7d060a297b4a9fc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb633dafea70898dab785b23badebf199b7de1d0e12d96df7d060a297b4a9fc9", kill_on_drop: false }`
[INFO] [stdout] eb633dafea70898dab785b23badebf199b7de1d0e12d96df7d060a297b4a9fc9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 34bebe1e481931dd88f2f3f543d8d147d2cbe235eb09916efb2d54ef493691c4
[INFO] running `Command { std: "docker" "start" "-a" "34bebe1e481931dd88f2f3f543d8d147d2cbe235eb09916efb2d54ef493691c4", kill_on_drop: false }`
[INFO] [stderr]    Compiling encoding-next-index-singlebyte v1.20180106.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "34bebe1e481931dd88f2f3f543d8d147d2cbe235eb09916efb2d54ef493691c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34bebe1e481931dd88f2f3f543d8d147d2cbe235eb09916efb2d54ef493691c4", kill_on_drop: false }`
[INFO] [stdout] 34bebe1e481931dd88f2f3f543d8d147d2cbe235eb09916efb2d54ef493691c4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2bfd928170f50d126c81ad312d0902357f6216df945a6a8c7aea8e9add560d7e
[INFO] running `Command { std: "docker" "start" "-a" "2bfd928170f50d126c81ad312d0902357f6216df945a6a8c7aea8e9add560d7e", kill_on_drop: false }`
[INFO] [stderr]    Compiling encoding-next_index_tests v0.1.5
[INFO] [stderr]    Compiling encoding-next-index-singlebyte v1.20180106.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> lib.rs:9:27
[INFO] [stdout]   |
[INFO] [stdout] 9 | #![cfg_attr(test, feature(test))]
[INFO] [stdout]   |                           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `encoding-next-index-singlebyte` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "2bfd928170f50d126c81ad312d0902357f6216df945a6a8c7aea8e9add560d7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2bfd928170f50d126c81ad312d0902357f6216df945a6a8c7aea8e9add560d7e", kill_on_drop: false }`
[INFO] [stdout] 2bfd928170f50d126c81ad312d0902357f6216df945a6a8c7aea8e9add560d7e
