[INFO] crate lockchain-core 0.9.0 is already in cache
[INFO] testing lockchain-core-0.9.0 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate lockchain-core 0.9.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate lockchain-core 0.9.0 on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate lockchain-core 0.9.0
[INFO] finished tweaking crates.io crate lockchain-core 0.9.0
[INFO] tweaked toml for crates.io crate lockchain-core 0.9.0 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "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-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5bea0f8226960aee32cb2d3c9f293eb770b09cf25173e43d99073f307f3b6bd7
[INFO] running `"docker" "start" "-a" "5bea0f8226960aee32cb2d3c9f293eb770b09cf25173e43d99073f307f3b6bd7"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling pam-sys v0.5.6
[INFO] [stderr]    Compiling users v0.5.3
[INFO] [stderr]    Compiling nix v0.11.1
[INFO] [stderr]    Compiling base64 v0.8.0
[INFO] [stderr]    Compiling block-cipher-trait v0.6.2
[INFO] [stderr]    Compiling crypto-mac v0.6.2
[INFO] [stderr]    Compiling chrono v0.4.11
[INFO] [stderr]    Compiling blake2 v0.7.1
[INFO] [stderr]    Compiling blowfish v0.4.0
[INFO] [stderr]    Compiling hmac v0.6.3
[INFO] [stderr]    Compiling pbkdf2 v0.2.3
[INFO] [stderr]    Compiling bcrypt v0.2.2
[INFO] [stderr]    Compiling pam-auth v0.5.5
[INFO] [stderr]    Compiling keybob v0.3.1
[INFO] [stderr]    Compiling lockchain-core v0.9.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(external_doc)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/traits.rs:82:45
[INFO] [stderr]    |
[INFO] [stderr] 82 |     fn load(path: &str) -> Result<Self, Box<Error>> {
[INFO] [stderr]    |                                             ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/traits.rs:90:50
[INFO] [stderr]    |
[INFO] [stderr] 90 |     fn save(&self, path: &str) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                  ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/users/auth.rs:50:30
[INFO] [stderr]    |
[INFO] [stderr] 50 |             println!("{}", e.description());
[INFO] [stderr]    |                              ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/users/auth.rs:51:33
[INFO] [stderr]    |
[INFO] [stderr] 51 |             println!("{:#?}", e.cause());
[INFO] [stderr]    |                                 ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/users/auth.rs:59:30
[INFO] [stderr]    |
[INFO] [stderr] 59 |             println!("{}", e.description());
[INFO] [stderr]    |                              ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/users/auth.rs:60:33
[INFO] [stderr]    |
[INFO] [stderr] 60 |             println!("{:#?}", e.cause());
[INFO] [stderr]    |                                 ^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error; 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `lockchain-core`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "5bea0f8226960aee32cb2d3c9f293eb770b09cf25173e43d99073f307f3b6bd7"`
[INFO] running `"docker" "rm" "-f" "5bea0f8226960aee32cb2d3c9f293eb770b09cf25173e43d99073f307f3b6bd7"`
[INFO] [stdout] 5bea0f8226960aee32cb2d3c9f293eb770b09cf25173e43d99073f307f3b6bd7