[INFO] fetching crate vec64 0.4.3...
[INFO] checking vec64-0.4.3 against 1.95.0 for pr-155915
[INFO] extracting crate vec64 0.4.3 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate vec64 0.4.3
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate vec64 0.4.3
[INFO] tweaked toml for crates.io crate vec64 0.4.3 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate vec64 0.4.3 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate vec64 0.4.3 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tikv-jemallocator v0.6.1
[INFO] [stderr]   Downloaded wasm_sync v0.1.2
[INFO] [stderr]   Downloaded wasm-bindgen-rayon v1.3.0
[INFO] [stderr]   Downloaded tikv-jemalloc-sys v0.6.1+5.3.0-1-ge13ca993e8ccb9ba9847cc330696e02839f328f7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8ee6fc1280b666f84d1c9c6d8c0648f41df41887d8bff16777c591e019791436
[INFO] running `Command { std: "docker" "start" "-a" "8ee6fc1280b666f84d1c9c6d8c0648f41df41887d8bff16777c591e019791436", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8ee6fc1280b666f84d1c9c6d8c0648f41df41887d8bff16777c591e019791436", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ee6fc1280b666f84d1c9c6d8c0648f41df41887d8bff16777c591e019791436", kill_on_drop: false }`
[INFO] [stdout] 8ee6fc1280b666f84d1c9c6d8c0648f41df41887d8bff16777c591e019791436
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8f43001003aef1aef440661962a377e1e11a1d763c2ebb2e92679eb965347bb6
[INFO] running `Command { std: "docker" "start" "-a" "8f43001003aef1aef440661962a377e1e11a1d763c2ebb2e92679eb965347bb6", kill_on_drop: false }`
[INFO] [stderr]    Compiling zerocopy v0.8.40
[INFO] [stderr]     Checking regex-syntax v0.8.10
[INFO] [stderr]     Checking clap_lex v1.0.0
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling alloca v0.4.0
[INFO] [stderr]    Compiling tikv-jemalloc-sys v0.6.1+5.3.0-1-ge13ca993e8ccb9ba9847cc330696e02839f328f7
[INFO] [stderr]     Checking criterion-plot v0.8.2
[INFO] [stderr]     Checking page_size v0.6.0
[INFO] [stderr]     Checking vec64 v0.4.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:47:1
[INFO] [stdout]    |
[INFO] [stdout] 47 | #![feature(allocator_api)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `vec64` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "8f43001003aef1aef440661962a377e1e11a1d763c2ebb2e92679eb965347bb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f43001003aef1aef440661962a377e1e11a1d763c2ebb2e92679eb965347bb6", kill_on_drop: false }`
[INFO] [stdout] 8f43001003aef1aef440661962a377e1e11a1d763c2ebb2e92679eb965347bb6
