[INFO] cloning repository https://github.com/tscs37/flathunter-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tscs37/flathunter-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftscs37%2Fflathunter-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftscs37%2Fflathunter-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 462ca6618d0dd2e27ce6f7b3e871a7ea27118dec
[INFO] testing tscs37/flathunter-rs against beta-2021-01-01 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftscs37%2Fflathunter-rs" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tscs37/flathunter-rs on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tscs37/flathunter-rs
[INFO] finished tweaking git repo https://github.com/tscs37/flathunter-rs
[INFO] tweaked toml for git repo https://github.com/tscs37/flathunter-rs written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/tscs37/flathunter-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded os_type v2.2.0
[INFO] [stderr]   Downloaded fern v0.5.8
[INFO] [stderr]   Downloaded backtrace v0.3.31
[INFO] [stderr]   Downloaded serde_derive v1.0.93
[INFO] [stderr]   Downloaded syn v0.15.38
[INFO] [stderr]   Downloaded human-panic v1.0.1
[INFO] [stderr]   Downloaded rust_decimal v1.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "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] 86605880b34e701a06ed544a5c8cd91747d1c9f22b6f4f670a42b93ddbbae46d
[INFO] running `Command { std: "docker" "start" "-a" "86605880b34e701a06ed544a5c8cd91747d1c9f22b6f4f670a42b93ddbbae46d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "86605880b34e701a06ed544a5c8cd91747d1c9f22b6f4f670a42b93ddbbae46d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86605880b34e701a06ed544a5c8cd91747d1c9f22b6f4f670a42b93ddbbae46d", kill_on_drop: false }`
[INFO] [stdout] 86605880b34e701a06ed544a5c8cd91747d1c9f22b6f4f670a42b93ddbbae46d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] abc5de2f2cb44e48ae7faffd4cd704b7c8d75af4d6ab147dd98d0c1f9eb6f13b
[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" "abc5de2f2cb44e48ae7faffd4cd704b7c8d75af4d6ab147dd98d0c1f9eb6f13b", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v0.15.38
[INFO] [stderr]    Compiling serde v1.0.93
[INFO] [stderr]    Compiling num-bigint v0.2.2
[INFO] [stderr]    Compiling bit-vec v0.4.4
[INFO] [stderr]    Compiling termcolor v0.3.6
[INFO] [stderr]    Compiling backtrace v0.3.31
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling itertools v0.8.0
[INFO] [stderr]    Compiling unreachable v0.1.1
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling tendril v0.3.1
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling signal-hook-registry v1.0.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.7.1
[INFO] [stderr]    Compiling debug_unreachable v0.1.1
[INFO] [stderr]    Compiling bit-set v0.4.0
[INFO] [stderr]    Compiling want v0.0.6
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling fern v0.5.8
[INFO] [stderr]    Compiling mio v0.6.19
[INFO] [stderr]    Compiling tokio-io v0.1.12
[INFO] [stderr]    Compiling signal-hook v0.1.9
[INFO] [stderr]    Compiling native-tls v0.2.3
[INFO] [stderr]    Compiling os_type v2.2.0
[INFO] [stderr]    Compiling flate2 v1.0.9
[INFO] [stderr]    Compiling crossbeam-deque v0.7.1
[INFO] [stderr]    Compiling uuid v0.6.5
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]    Compiling tokio-threadpool v0.1.14
[INFO] [stderr]    Compiling string_cache v0.6.2
[INFO] [stderr]    Compiling markup5ever v0.3.2
[INFO] [stderr]    Compiling error-chain v0.12.1
[INFO] [stderr]    Compiling chrono v0.4.7
[INFO] [stderr]    Compiling h2 v0.1.24
[INFO] [stderr]    Compiling tokio-reactor v0.1.9
[INFO] [stderr]    Compiling publicsuffix v1.5.2
[INFO] [stderr]    Compiling tokio-tcp v0.1.3
[INFO] [stderr]    Compiling tokio v0.1.21
[INFO] [stderr]    Compiling num v0.2.0
[INFO] [stderr]    Compiling html5ever v0.18.0
[INFO] [stderr]    Compiling hyper v0.12.30
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling serde_derive v1.0.93
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling hyper-tls v0.3.2
[INFO] [stderr]    Compiling serde_json v1.0.40
[INFO] [stderr]    Compiling toml v0.4.10
[INFO] [stderr]    Compiling serde_urlencoded v0.5.5
[INFO] [stderr]    Compiling rust_decimal v1.0.1
[INFO] [stderr]    Compiling serde_yaml v0.8.9
[INFO] [stderr]    Compiling human-panic v1.0.1
[INFO] [stderr]    Compiling cookie_store v0.7.0
[INFO] [stderr]    Compiling reqwest v0.9.18
[INFO] [stderr]    Compiling select v0.4.2
[INFO] [stderr]    Compiling flathunter-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(try_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(generator_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/errors.rs:28:1
[INFO] [stdout]    |
[INFO] [stdout] 28 | / error_chain! {
[INFO] [stdout] 29 | |     // The type defined for this error. These are the conventional
[INFO] [stdout] 30 | |     // and recommended names, but they can be arbitrarily chosen.
[INFO] [stdout] 31 | |     //
[INFO] [stdout] ...  |
[INFO] [stdout] 93 | |     }
[INFO] [stdout] 94 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/errors.rs:28:1
[INFO] [stdout]    |
[INFO] [stdout] 28 | / error_chain! {
[INFO] [stdout] 29 | |     // The type defined for this error. These are the conventional
[INFO] [stdout] 30 | |     // and recommended names, but they can be arbitrarily chosen.
[INFO] [stdout] 31 | |     //
[INFO] [stdout] ...  |
[INFO] [stdout] 93 | |     }
[INFO] [stdout] 94 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/notifiers/mod.rs:26:66
[INFO] [stdout]    |
[INFO] [stdout] 26 |     self.post_message(cfg, &format!("Error in Flathunter: {}", e.description()))?;
[INFO] [stdout]    |                                                                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 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 `flathunter-rs`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "abc5de2f2cb44e48ae7faffd4cd704b7c8d75af4d6ab147dd98d0c1f9eb6f13b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "abc5de2f2cb44e48ae7faffd4cd704b7c8d75af4d6ab147dd98d0c1f9eb6f13b", kill_on_drop: false }`
[INFO] [stdout] abc5de2f2cb44e48ae7faffd4cd704b7c8d75af4d6ab147dd98d0c1f9eb6f13b