[INFO] fetching crate eng-wasm 0.1.7...
[INFO] testing eng-wasm-0.1.7 against 1.75.0 for beta-1.76-1
[INFO] extracting crate eng-wasm 0.1.7 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate eng-wasm 0.1.7 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 eng-wasm 0.1.7
[INFO] finished tweaking crates.io crate eng-wasm 0.1.7
[INFO] tweaked toml for crates.io crate eng-wasm 0.1.7 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[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 static_assertions v0.2.5
[INFO] [stderr]   Downloaded fixed-hash v0.3.2
[INFO] [stderr]   Downloaded uint v0.6.1
[INFO] [stderr]   Downloaded eng-pwasm-abi v0.3.2
[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] 2981d8ba7a6099920798d5be480cd2b42177d41e5184a2462c09c4031b9feb57
[INFO] running `Command { std: "docker" "start" "-a" "2981d8ba7a6099920798d5be480cd2b42177d41e5184a2462c09c4031b9feb57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2981d8ba7a6099920798d5be480cd2b42177d41e5184a2462c09c4031b9feb57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2981d8ba7a6099920798d5be480cd2b42177d41e5184a2462c09c4031b9feb57", kill_on_drop: false }`
[INFO] [stdout] 2981d8ba7a6099920798d5be480cd2b42177d41e5184a2462c09c4031b9feb57
[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] 91353de3c89369421ccda14531d92bbd3f49fd2555389499f526475c62f36156
[INFO] running `Command { std: "docker" "start" "-a" "91353de3c89369421ccda14531d92bbd3f49fd2555389499f526475c62f36156", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.194
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling rustc-hex v2.1.0
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling static_assertions v0.2.5
[INFO] [stderr]    Compiling fixed-hash v0.3.2
[INFO] [stderr]    Compiling uint v0.6.1
[INFO] [stderr]    Compiling serde_json v1.0.111
[INFO] [stderr]    Compiling eng-pwasm-abi v0.3.2
[INFO] [stderr]    Compiling eng-wasm v0.1.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `String`, `vec::Vec`
[INFO] [stdout]   --> src/internal_std.rs:9:14
[INFO] [stdout]    |
[INFO] [stdout] 9  |     string::{String, ToString},
[INFO] [stdout]    |              ^^^^^^
[INFO] [stdout] 10 |     vec::Vec,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[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(slice_concat_trait)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning 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 `eng-wasm` (lib) due to 2 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "91353de3c89369421ccda14531d92bbd3f49fd2555389499f526475c62f36156", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91353de3c89369421ccda14531d92bbd3f49fd2555389499f526475c62f36156", kill_on_drop: false }`
[INFO] [stdout] 91353de3c89369421ccda14531d92bbd3f49fd2555389499f526475c62f36156
[INFO] testing eng-wasm-0.1.7 against beta-2023-12-22 for beta-1.76-1
[INFO] extracting crate eng-wasm 0.1.7 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate eng-wasm 0.1.7 on toolchain beta-2023-12-22
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate eng-wasm 0.1.7
[INFO] finished tweaking crates.io crate eng-wasm 0.1.7
[INFO] tweaked toml for crates.io crate eng-wasm 0.1.7 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "+beta-2023-12-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] af96656960d2e8d11a75c732a77b4c2306daf415a08db1a1912591ab5c7007ff
[INFO] running `Command { std: "docker" "start" "-a" "af96656960d2e8d11a75c732a77b4c2306daf415a08db1a1912591ab5c7007ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "af96656960d2e8d11a75c732a77b4c2306daf415a08db1a1912591ab5c7007ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af96656960d2e8d11a75c732a77b4c2306daf415a08db1a1912591ab5c7007ff", kill_on_drop: false }`
[INFO] [stdout] af96656960d2e8d11a75c732a77b4c2306daf415a08db1a1912591ab5c7007ff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "+beta-2023-12-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c4e2d8aa14534be2921a94fa2e1092fd1926e52a5b27b563cc1cdc33bcbd833f
[INFO] running `Command { std: "docker" "start" "-a" "c4e2d8aa14534be2921a94fa2e1092fd1926e52a5b27b563cc1cdc33bcbd833f", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.194
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling static_assertions v0.2.5
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling rustc-hex v2.1.0
[INFO] [stderr]    Compiling fixed-hash v0.3.2
[INFO] [stderr]    Compiling uint v0.6.1
[INFO] [stderr]    Compiling eng-pwasm-abi v0.3.2
[INFO] [stderr]    Compiling serde_json v1.0.111
[INFO] [stderr]    Compiling eng-wasm v0.1.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `String`, `vec::Vec`
[INFO] [stdout]   --> src/internal_std.rs:9:14
[INFO] [stdout]    |
[INFO] [stdout] 9  |     string::{String, ToString},
[INFO] [stdout]    |              ^^^^^^
[INFO] [stdout] 10 |     vec::Vec,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(slice_concat_trait)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error; 1 warning 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 `eng-wasm` (lib) due to 2 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "c4e2d8aa14534be2921a94fa2e1092fd1926e52a5b27b563cc1cdc33bcbd833f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4e2d8aa14534be2921a94fa2e1092fd1926e52a5b27b563cc1cdc33bcbd833f", kill_on_drop: false }`
[INFO] [stdout] c4e2d8aa14534be2921a94fa2e1092fd1926e52a5b27b563cc1cdc33bcbd833f
