[INFO] fetching crate enum-tryfrom 0.2.1...
[INFO] testing enum-tryfrom-0.2.1 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate enum-tryfrom 0.2.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate enum-tryfrom 0.2.1 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate enum-tryfrom 0.2.1
[INFO] finished tweaking crates.io crate enum-tryfrom 0.2.1
[INFO] tweaked toml for crates.io crate enum-tryfrom 0.2.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fbd38b8f7c8e573f5046ca1d3a84465a078e7398d93d98c0ddb9d474040aedd5
[INFO] running `Command { std: "docker" "start" "-a" "fbd38b8f7c8e573f5046ca1d3a84465a078e7398d93d98c0ddb9d474040aedd5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fbd38b8f7c8e573f5046ca1d3a84465a078e7398d93d98c0ddb9d474040aedd5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbd38b8f7c8e573f5046ca1d3a84465a078e7398d93d98c0ddb9d474040aedd5", kill_on_drop: false }`
[INFO] [stdout] fbd38b8f7c8e573f5046ca1d3a84465a078e7398d93d98c0ddb9d474040aedd5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ee2b625b2ffd852fb1d7491434fc89f247faf9c656f96c21c112cc682ce745ff
[INFO] running `Command { std: "docker" "start" "-a" "ee2b625b2ffd852fb1d7491434fc89f247faf9c656f96c21c112cc682ce745ff", kill_on_drop: false }`
[INFO] [stderr]    Compiling enum-tryfrom v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.21s
[INFO] running `Command { std: "docker" "inspect" "ee2b625b2ffd852fb1d7491434fc89f247faf9c656f96c21c112cc682ce745ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee2b625b2ffd852fb1d7491434fc89f247faf9c656f96c21c112cc682ce745ff", kill_on_drop: false }`
[INFO] [stdout] ee2b625b2ffd852fb1d7491434fc89f247faf9c656f96c21c112cc682ce745ff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f75a25fa8176d8ffcf8c6129fbdbdaf008d160694a25f2b02c08464108d8c222
[INFO] running `Command { std: "docker" "start" "-a" "f75a25fa8176d8ffcf8c6129fbdbdaf008d160694a25f2b02c08464108d8c222", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling compiletest_rs v0.3.26
[INFO] [stderr]    Compiling diff v0.1.12
[INFO] [stderr]    Compiling object v0.26.2
[INFO] [stderr]    Compiling dirs-sys v0.3.6
[INFO] [stderr]    Compiling filetime v0.2.15
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling dirs v2.0.2
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling term v0.6.1
[INFO] [stderr]    Compiling tester v0.6.0
[INFO] [stderr]    Compiling enum-tryfrom-derive v0.2.1
[INFO] [stderr]    Compiling synstructure v0.12.5
[INFO] [stderr]    Compiling backtrace v0.3.61
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling serde_json v1.0.67
[INFO] [stderr]    Compiling rustfix v0.4.6
[INFO] [stderr]    Compiling enum-tryfrom v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> tests/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(try_from)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/lib.rs:41:44
[INFO] [stdout]    |
[INFO] [stdout] 41 |         assert_eq!(InvalidEnumValue::new().description(), DESCRIPTION);
[INFO] [stdout]    |                                            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `enum-tryfrom` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "f75a25fa8176d8ffcf8c6129fbdbdaf008d160694a25f2b02c08464108d8c222", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f75a25fa8176d8ffcf8c6129fbdbdaf008d160694a25f2b02c08464108d8c222", kill_on_drop: false }`
[INFO] [stdout] f75a25fa8176d8ffcf8c6129fbdbdaf008d160694a25f2b02c08464108d8c222