[INFO] crate encoding-index-singlebyte 1.20141219.5 is already in cache
[INFO] testing encoding-index-singlebyte-1.20141219.5 against beta-2020-07-24 for beta-1.46-1
[INFO] extracting crate encoding-index-singlebyte 1.20141219.5 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate encoding-index-singlebyte 1.20141219.5 on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate encoding-index-singlebyte 1.20141219.5
[INFO] removed path dependency encoding_index_tests from crates.io crate encoding-index-singlebyte 1.20141219.5
[INFO] finished tweaking crates.io crate encoding-index-singlebyte 1.20141219.5
[INFO] tweaked toml for crates.io crate encoding-index-singlebyte 1.20141219.5 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] daa2b078e9405d8985acf2b21a9d88756031beeae30539fc98238fc56d110f4c
[INFO] running `Command { std: "docker" "start" "-a" "daa2b078e9405d8985acf2b21a9d88756031beeae30539fc98238fc56d110f4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "daa2b078e9405d8985acf2b21a9d88756031beeae30539fc98238fc56d110f4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "daa2b078e9405d8985acf2b21a9d88756031beeae30539fc98238fc56d110f4c", kill_on_drop: false }`
[INFO] [stdout] daa2b078e9405d8985acf2b21a9d88756031beeae30539fc98238fc56d110f4c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ecb2b9734ba0c2f3c455a2a5b26e3c6ee535363b4e221cb5b972e5eeb2fe3fc4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ecb2b9734ba0c2f3c455a2a5b26e3c6ee535363b4e221cb5b972e5eeb2fe3fc4", kill_on_drop: false }`
[INFO] [stderr]    Compiling encoding-index-singlebyte v1.20141219.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `Command { std: "docker" "inspect" "ecb2b9734ba0c2f3c455a2a5b26e3c6ee535363b4e221cb5b972e5eeb2fe3fc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ecb2b9734ba0c2f3c455a2a5b26e3c6ee535363b4e221cb5b972e5eeb2fe3fc4", kill_on_drop: false }`
[INFO] [stdout] ecb2b9734ba0c2f3c455a2a5b26e3c6ee535363b4e221cb5b972e5eeb2fe3fc4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] de73a25e5acc0b78b35615077fbfa1e84a1a52ab3a175f5d82cbbc5c16753ca6
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "de73a25e5acc0b78b35615077fbfa1e84a1a52ab3a175f5d82cbbc5c16753ca6", kill_on_drop: false }`
[INFO] [stderr]    Compiling encoding-index-singlebyte v1.20141219.5 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> lib.rs:9:19
[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-index-singlebyte`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "de73a25e5acc0b78b35615077fbfa1e84a1a52ab3a175f5d82cbbc5c16753ca6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de73a25e5acc0b78b35615077fbfa1e84a1a52ab3a175f5d82cbbc5c16753ca6", kill_on_drop: false }`
[INFO] [stdout] de73a25e5acc0b78b35615077fbfa1e84a1a52ab3a175f5d82cbbc5c16753ca6