[INFO] fetching crate libdvb-rs 0.4.5...
[INFO] testing libdvb-rs-0.4.5 against 1.60.0 for beta-1.61-1
[INFO] extracting crate libdvb-rs 0.4.5 into /workspace/builds/worker-68/source
[INFO] validating manifest of crates.io crate libdvb-rs 0.4.5 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libdvb-rs 0.4.5
[INFO] finished tweaking crates.io crate libdvb-rs 0.4.5
[INFO] tweaked toml for crates.io crate libdvb-rs 0.4.5 written to /workspace/builds/worker-68/source/Cargo.toml
[INFO] crate crates.io crate libdvb-rs 0.4.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded anyhow v1.0.56
[INFO] [stderr]   Downloaded strum_macros v0.23.1
[INFO] [stderr]   Downloaded quote v1.0.17
[INFO] [stderr]   Downloaded nix v0.23.1
[INFO] [stderr]   Downloaded libc v0.2.121
[INFO] [stderr]   Downloaded strum v0.23.0
[INFO] [stderr]   Downloaded syn v1.0.89
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d8119fa38e47cd2c78411ee8cf8dfcb9388f9619db1c90c35cdcddf32aa144b5
[INFO] running `Command { std: "docker" "start" "-a" "d8119fa38e47cd2c78411ee8cf8dfcb9388f9619db1c90c35cdcddf32aa144b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d8119fa38e47cd2c78411ee8cf8dfcb9388f9619db1c90c35cdcddf32aa144b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8119fa38e47cd2c78411ee8cf8dfcb9388f9619db1c90c35cdcddf32aa144b5", kill_on_drop: false }`
[INFO] [stdout] d8119fa38e47cd2c78411ee8cf8dfcb9388f9619db1c90c35cdcddf32aa144b5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 37df8ff3ef99aa6731169ae0f50eb6cb81530ad5b503cecf32ee6a868715ae3e
[INFO] running `Command { std: "docker" "start" "-a" "37df8ff3ef99aa6731169ae0f50eb6cb81530ad5b503cecf32ee6a868715ae3e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.89
[INFO] [stderr]    Compiling rustversion v1.0.6
[INFO] [stderr]    Compiling unicode-segmentation v1.9.0
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]    Compiling anyhow v1.0.56
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling nix v0.23.1
[INFO] [stderr]    Compiling strum_macros v0.23.1
[INFO] [stderr]    Compiling strum v0.23.0
[INFO] [stderr]    Compiling libdvb-rs v0.4.5 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(iterator_try_collect)]
[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 `libdvb-rs` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "37df8ff3ef99aa6731169ae0f50eb6cb81530ad5b503cecf32ee6a868715ae3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37df8ff3ef99aa6731169ae0f50eb6cb81530ad5b503cecf32ee6a868715ae3e", kill_on_drop: false }`
[INFO] [stdout] 37df8ff3ef99aa6731169ae0f50eb6cb81530ad5b503cecf32ee6a868715ae3e