[INFO] fetching crate tubez 0.0.1...
[INFO] testing tubez-0.0.1 against 1.75.0 for beta-1.76-1
[INFO] extracting crate tubez 0.0.1 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate tubez 0.0.1 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tubez 0.0.1
[INFO] finished tweaking crates.io crate tubez 0.0.1
[INFO] tweaked toml for crates.io crate tubez 0.0.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate tubez 0.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded clap v3.2.13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0b1d721de167c8434ed255ce6869331eeede0f79fb92a03b2ef88f072847fb10
[INFO] running `Command { std: "docker" "start" "-a" "0b1d721de167c8434ed255ce6869331eeede0f79fb92a03b2ef88f072847fb10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0b1d721de167c8434ed255ce6869331eeede0f79fb92a03b2ef88f072847fb10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b1d721de167c8434ed255ce6869331eeede0f79fb92a03b2ef88f072847fb10", kill_on_drop: false }`
[INFO] [stdout] 0b1d721de167c8434ed255ce6869331eeede0f79fb92a03b2ef88f072847fb10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3d638065d10f2e7d5c6ac9ec2abc7881a2fa30a10a6f14a6ff60f87fb5428ea3
[INFO] running `Command { std: "docker" "start" "-a" "3d638065d10f2e7d5c6ac9ec2abc7881a2fa30a10a6f14a6ff60f87fb5428ea3", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling unicode-ident v1.0.1
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling itoa v1.0.2
[INFO] [stderr]    Compiling once_cell v1.12.0
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]    Compiling hashbrown v0.12.1
[INFO] [stderr]    Compiling httparse v1.7.1
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling serde_json v1.0.81
[INFO] [stderr]    Compiling time-macros v0.2.4
[INFO] [stderr]    Compiling num_threads v0.1.6
[INFO] [stderr]    Compiling ryu v1.0.10
[INFO] [stderr]    Compiling http v0.2.8
[INFO] [stderr]    Compiling tracing-core v0.1.28
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling tracing v0.1.35
[INFO] [stderr]    Compiling num_cpus v1.13.1
[INFO] [stderr]    Compiling mio v0.8.4
[INFO] [stderr]    Compiling socket2 v0.4.4
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling http-body v0.4.5
[INFO] [stderr]    Compiling colored v2.0.0
[INFO] [stderr]    Compiling time v0.3.11
[INFO] [stderr]    Compiling simple_logger v2.2.0
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]    Compiling tokio-macros v1.8.0
[INFO] [stderr]    Compiling tokio v1.19.2
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]    Compiling futures-executor v0.3.21
[INFO] [stderr]    Compiling futures v0.3.21
[INFO] [stderr]    Compiling tokio-util v0.7.3
[INFO] [stderr]    Compiling h2 v0.3.13
[INFO] [stderr]    Compiling hyper v0.14.19
[INFO] [stderr]    Compiling tubez v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `decoder::Decoder`
[INFO] [stdout]  --> src/common/frame/mod.rs:7:19
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub(in crate) use decoder::Decoder;
[INFO] [stdout]   |                   ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `frame::Frame`
[INFO] [stdout]   --> src/common/frame/mod.rs:10:19
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub(in crate) use frame::Frame;
[INFO] [stdout]    |                   ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `frame_handler::FrameHandler`
[INFO] [stdout]   --> src/common/frame/mod.rs:11:19
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub(in crate) use frame_handler::FrameHandler;
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `frame_handler::FrameHandlerResult`
[INFO] [stdout]   --> src/common/frame/mod.rs:12:19
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub(in crate) use frame_handler::FrameHandlerResult;
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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(assert_matches)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(map_try_insert)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 4 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 `tubez` (lib) due to 3 previous errors; 4 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "3d638065d10f2e7d5c6ac9ec2abc7881a2fa30a10a6f14a6ff60f87fb5428ea3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d638065d10f2e7d5c6ac9ec2abc7881a2fa30a10a6f14a6ff60f87fb5428ea3", kill_on_drop: false }`
[INFO] [stdout] 3d638065d10f2e7d5c6ac9ec2abc7881a2fa30a10a6f14a6ff60f87fb5428ea3
