[INFO] fetching crate enum-tryfrom 0.2.1...
[INFO] testing enum-tryfrom-0.2.1 against 1.54.0 for beta-1.55-1
[INFO] extracting crate enum-tryfrom 0.2.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate enum-tryfrom 0.2.1 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "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-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "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" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 72e18ac9498bb83ece56611735e121b40bd329c1217a4e220670fa65e04bf4fc
[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" "72e18ac9498bb83ece56611735e121b40bd329c1217a4e220670fa65e04bf4fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "72e18ac9498bb83ece56611735e121b40bd329c1217a4e220670fa65e04bf4fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72e18ac9498bb83ece56611735e121b40bd329c1217a4e220670fa65e04bf4fc", kill_on_drop: false }`
[INFO] [stdout] 72e18ac9498bb83ece56611735e121b40bd329c1217a4e220670fa65e04bf4fc
[INFO] running `Command { std: "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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 92645a1367ad2ac2d604d880cda10a1b855943d607b83591b3ab589c7f136a9f
[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" "92645a1367ad2ac2d604d880cda10a1b855943d607b83591b3ab589c7f136a9f", kill_on_drop: false }`
[INFO] [stderr]    Compiling enum-tryfrom v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.76s
[INFO] running `Command { std: "docker" "inspect" "92645a1367ad2ac2d604d880cda10a1b855943d607b83591b3ab589c7f136a9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92645a1367ad2ac2d604d880cda10a1b855943d607b83591b3ab589c7f136a9f", kill_on_drop: false }`
[INFO] [stdout] 92645a1367ad2ac2d604d880cda10a1b855943d607b83591b3ab589c7f136a9f
[INFO] running `Command { std: "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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b306427f3da4b8ac9b6be6affba8bb398f81be5d59ec61de816b2c2998e93eef
[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" "b306427f3da4b8ac9b6be6affba8bb398f81be5d59ec61de816b2c2998e93eef", kill_on_drop: false }`
[INFO] [stderr]    Compiling compiletest_rs v0.3.26
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling filetime v0.2.14
[INFO] [stderr]    Compiling backtrace v0.3.61
[INFO] [stderr]    Compiling dirs v2.0.2
[INFO] [stderr]    Compiling enum-tryfrom-derive v0.2.1
[INFO] [stderr]    Compiling serde_json v1.0.66
[INFO] [stderr]    Compiling term v0.6.1
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling tester v0.6.0
[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 stable 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] [stderr] error: could not compile `enum-tryfrom`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "b306427f3da4b8ac9b6be6affba8bb398f81be5d59ec61de816b2c2998e93eef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b306427f3da4b8ac9b6be6affba8bb398f81be5d59ec61de816b2c2998e93eef", kill_on_drop: false }`
[INFO] [stdout] b306427f3da4b8ac9b6be6affba8bb398f81be5d59ec61de816b2c2998e93eef
