[INFO] fetching crate encoding-next-index-singlebyte 1.20180106.0...
[INFO] testing encoding-next-index-singlebyte-1.20180106.0 against 1.75.0 for beta-1.76-1
[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 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "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" "+1.75.0" "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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 28b7e307e2a78382700454339be16aa3cba8bc7bcf9f84a1dbf4e91e1c7dfa11
[INFO] running `Command { std: "docker" "start" "-a" "28b7e307e2a78382700454339be16aa3cba8bc7bcf9f84a1dbf4e91e1c7dfa11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "28b7e307e2a78382700454339be16aa3cba8bc7bcf9f84a1dbf4e91e1c7dfa11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28b7e307e2a78382700454339be16aa3cba8bc7bcf9f84a1dbf4e91e1c7dfa11", kill_on_drop: false }`
[INFO] [stdout] 28b7e307e2a78382700454339be16aa3cba8bc7bcf9f84a1dbf4e91e1c7dfa11
[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" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9f984d427b59f70a4aeb9c097f7acaf2b1b50e20a54ce9f4ad45f3a06757b986
[INFO] running `Command { std: "docker" "start" "-a" "9f984d427b59f70a4aeb9c097f7acaf2b1b50e20a54ce9f4ad45f3a06757b986", 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 0.09s
[INFO] running `Command { std: "docker" "inspect" "9f984d427b59f70a4aeb9c097f7acaf2b1b50e20a54ce9f4ad45f3a06757b986", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f984d427b59f70a4aeb9c097f7acaf2b1b50e20a54ce9f4ad45f3a06757b986", kill_on_drop: false }`
[INFO] [stdout] 9f984d427b59f70a4aeb9c097f7acaf2b1b50e20a54ce9f4ad45f3a06757b986
[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" "+1.75.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f56bba6318b7c9e99bb7d3d6db0f76f7eada83c05a2efa705e01941cc982bd12
[INFO] running `Command { std: "docker" "start" "-a" "f56bba6318b7c9e99bb7d3d6db0f76f7eada83c05a2efa705e01941cc982bd12", 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 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" "f56bba6318b7c9e99bb7d3d6db0f76f7eada83c05a2efa705e01941cc982bd12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f56bba6318b7c9e99bb7d3d6db0f76f7eada83c05a2efa705e01941cc982bd12", kill_on_drop: false }`
[INFO] [stdout] f56bba6318b7c9e99bb7d3d6db0f76f7eada83c05a2efa705e01941cc982bd12
