[INFO] crate pattern-3 0.5.0 is already in cache
[INFO] testing pattern-3-0.5.0 against 1.45.2 for beta-1.46-1
[INFO] extracting crate pattern-3 0.5.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate pattern-3 0.5.0 on toolchain 1.45.2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pattern-3 0.5.0
[INFO] finished tweaking crates.io crate pattern-3 0.5.0
[INFO] tweaked toml for crates.io crate pattern-3 0.5.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+1.45.2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4e3d2aad084abee856e116cd64a196a8886dd9f05cfffa806240e972dcd01984
[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" "4e3d2aad084abee856e116cd64a196a8886dd9f05cfffa806240e972dcd01984", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4e3d2aad084abee856e116cd64a196a8886dd9f05cfffa806240e972dcd01984", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e3d2aad084abee856e116cd64a196a8886dd9f05cfffa806240e972dcd01984", kill_on_drop: false }`
[INFO] [stdout] 4e3d2aad084abee856e116cd64a196a8886dd9f05cfffa806240e972dcd01984
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+1.45.2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b642c3b1f818265aaf7db95e2edd3627aeac229e02e8d54199a65883509643a5
[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" "b642c3b1f818265aaf7db95e2edd3627aeac229e02e8d54199a65883509643a5", kill_on_drop: false }`
[INFO] [stderr]    Compiling pattern-3 v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout] 1  | / #![feature(
[INFO] [stdout] 2  | |     specialization,
[INFO] [stdout] 3  | |     // used in two places:
[INFO] [stdout] 4  | |     //  1. to support using the same two-way algorithm for non-Ord slices
[INFO] [stdout] ...  |
[INFO] [stdout] 17 | |     // some useful library features
[INFO] [stdout] 18 | | )]
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/omgwtf8/wtf8.rs:193:21
[INFO] [stdout]     |
[INFO] [stdout] 193 |             0xf00000...0xffffffff => {
[INFO] [stdout]     |                     ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/omgwtf8/wtf8.rs:196:21
[INFO] [stdout]     |
[INFO] [stdout] 196 |             0x800000...0xbfffff => self.0 & 0x3f | self.0 >> 2 & 0x3c0 | 0xdc00,
[INFO] [stdout]     |                     ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/omgwtf8/wtf8.rs:323:31
[INFO] [stdout]     |
[INFO] [stdout] 323 |             ascii_byte @ 0x00 ... 0x7F => ascii_byte,
[INFO] [stdout]     |                               ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 3 warnings 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 `pattern-3`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "b642c3b1f818265aaf7db95e2edd3627aeac229e02e8d54199a65883509643a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b642c3b1f818265aaf7db95e2edd3627aeac229e02e8d54199a65883509643a5", kill_on_drop: false }`
[INFO] [stdout] b642c3b1f818265aaf7db95e2edd3627aeac229e02e8d54199a65883509643a5