[INFO] updating cached repository https://github.com/interruptinuse/fixext-rs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 221b0377c1cb2924f2346d36ed05bc7a728333ac
[INFO] testing interruptinuse/fixext-rs against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Finterruptinuse%2Ffixext-rs" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/interruptinuse/fixext-rs 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 git repo https://github.com/interruptinuse/fixext-rs
[INFO] finished tweaking git repo https://github.com/interruptinuse/fixext-rs
[INFO] tweaked toml for git repo https://github.com/interruptinuse/fixext-rs written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/interruptinuse/fixext-rs already has a lockfile, it will not be regenerated
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"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" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stdout] 3a3231a1a6fc9edb2e19ff40e8eee5d6ace8aa8d5978b3274aff563705da628f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "3a3231a1a6fc9edb2e19ff40e8eee5d6ace8aa8d5978b3274aff563705da628f"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling serde v1.0.103
[INFO] [stderr]    Compiling half v1.4.0
[INFO] [stderr]    Compiling magic-sys v0.2.1 (https://github.com/interruptinuse/rust-magic-sys#0c20fce1)
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling utf8parse v0.1.1
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling dirs-sys v0.3.4
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling shellwords v1.0.0
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling dirs v2.0.2
[INFO] [stderr]    Compiling magic v0.12.2 (https://github.com/interruptinuse/rust-magic#8d38180e)
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling rustyline v5.0.4
[INFO] [stderr]    Compiling serde_derive v1.0.103
[INFO] [stderr]    Compiling toml v0.5.5
[INFO] [stderr]    Compiling serde_cbor v0.10.2
[INFO] [stderr]    Compiling winres v0.1.11
[INFO] [stderr]    Compiling fixext v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> fixext.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(label_break_value)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused label
[INFO] [stderr]    --> fixext.rs:745:84
[INFO] [stderr]     |
[INFO] [stderr] 745 |       let (desc, mime, dexts, mexts): (String, String, Vec<String>, Vec<String>) = 'magic: {
[INFO] [stderr]     |                                                                                    ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_labels)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error; 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `fixext`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "3a3231a1a6fc9edb2e19ff40e8eee5d6ace8aa8d5978b3274aff563705da628f"`
[INFO] running `"docker" "rm" "-f" "3a3231a1a6fc9edb2e19ff40e8eee5d6ace8aa8d5978b3274aff563705da628f"`
[INFO] [stdout] 3a3231a1a6fc9edb2e19ff40e8eee5d6ace8aa8d5978b3274aff563705da628f