[INFO] fetching crate pippin 0.1.0...
[INFO] checking pippin-0.1.0 against try#5e633973aa9255a88b65a39484627bb54e6044b3 for pr-66063
[INFO] extracting crate pippin 0.1.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate pippin 0.1.0 on toolchain 5e633973aa9255a88b65a39484627bb54e6044b3
[INFO] running `"/workspace/cargo-home/bin/cargo" "+5e633973aa9255a88b65a39484627bb54e6044b3" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate pippin 0.1.0
[INFO] finished tweaking crates.io crate pippin 0.1.0
[INFO] tweaked toml for crates.io crate pippin 0.1.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+5e633973aa9255a88b65a39484627bb54e6044b3" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+5e633973aa9255a88b65a39484627bb54e6044b3" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=allow" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+5e633973aa9255a88b65a39484627bb54e6044b3" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 80edff2eb836dea075774c4f9efc9159b25d25124a1cbe7ff3df120faf08b9e1
[INFO] running `"docker" "start" "-a" "80edff2eb836dea075774c4f9efc9159b25d25124a1cbe7ff3df120faf08b9e1"`
[INFO] [stderr] Blocking waiting for file lock on package cache
[INFO] [stderr] Blocking waiting for file lock on package cache
[INFO] [stderr] Checking hashindexed v0.1.1
[INFO] [stderr] Checking pippin v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr] --> src/lib.rs:68:1
[INFO] [stderr] |
[INFO] [stderr] 68 | #![feature(step_by)]
[INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr] --> src/lib.rs:73:1
[INFO] [stderr] |
[INFO] [stderr] 73 | #![feature(box_syntax)]
[INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr] --> src/lib.rs:68:1
[INFO] [stderr] |
[INFO] [stderr] 68 | #![feature(step_by)]
[INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr] --> src/lib.rs:73:1
[INFO] [stderr] |
[INFO] [stderr] 73 | #![feature(box_syntax)]
[INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]
[INFO] [stderr] error[E0195]: lifetime parameters or bounds on method `read_ss` do not match the trait declaration
[INFO] [stderr] --> src/fileio.rs:161:15
[INFO] [stderr] |
[INFO] [stderr] 161 | fn read_ss<'a>(&self, ss_num: usize) -> Result