[INFO] fetching crate lightbeam 0.19.0...
[INFO] checking lightbeam-0.19.0 against master#de32266a1780aa4ef748ce7f6200a1554fad0aca for pr-75585
[INFO] extracting crate lightbeam 0.19.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate lightbeam 0.19.0 on toolchain de32266a1780aa4ef748ce7f6200a1554fad0aca
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+de32266a1780aa4ef748ce7f6200a1554fad0aca" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lightbeam 0.19.0
[INFO] finished tweaking crates.io crate lightbeam 0.19.0
[INFO] tweaked toml for crates.io crate lightbeam 0.19.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate lightbeam 0.19.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+de32266a1780aa4ef748ce7f6200a1554fad0aca" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+de32266a1780aa4ef748ce7f6200a1554fad0aca" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e0f3347afeffc42af58aefb4c2fdd5e2543436c41474fafa2c331d2f66133efd
[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" "e0f3347afeffc42af58aefb4c2fdd5e2543436c41474fafa2c331d2f66133efd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e0f3347afeffc42af58aefb4c2fdd5e2543436c41474fafa2c331d2f66133efd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0f3347afeffc42af58aefb4c2fdd5e2543436c41474fafa2c331d2f66133efd", kill_on_drop: false }`
[INFO] [stdout] e0f3347afeffc42af58aefb4c2fdd5e2543436c41474fafa2c331d2f66133efd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+de32266a1780aa4ef748ce7f6200a1554fad0aca" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ccc73a4cf6315c4ccfec416fdb6a65608dbc1b2eb3898f863442c6f6114a6406
[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" "ccc73a4cf6315c4ccfec416fdb6a65608dbc1b2eb3898f863442c6f6114a6406", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.66.0
[INFO] [stderr]    Compiling cranelift-entity v0.66.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling target-lexicon v0.10.0
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]     Checking smallvec v1.4.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.8
[INFO] [stderr]    Compiling anyhow v1.0.31
[INFO] [stderr]     Checking more-asserts v0.2.1
[INFO] [stderr]     Checking staticvec v0.10.1
[INFO] [stderr]     Checking wasmparser v0.59.0
[INFO] [stderr]    Compiling capstone-sys v0.10.0
[INFO] [stderr]    Compiling owning_ref v0.4.1
[INFO] [stderr]     Checking wast v21.0.0
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.66.0
[INFO] [stderr]     Checking cranelift-bforest v0.66.0
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]    Compiling indexmap v1.4.0
[INFO] [stderr]    Compiling memoffset v0.5.5
[INFO] [stderr]     Checking regalloc v0.0.27
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stdout] error[E0635]: unknown feature `const_saturating_int_methods`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/staticvec-0.10.1/src/lib.rs:41:3
[INFO] [stdout]    |
[INFO] [stdout] 41 |   const_saturating_int_methods,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `staticvec`.
[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] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "ccc73a4cf6315c4ccfec416fdb6a65608dbc1b2eb3898f863442c6f6114a6406", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ccc73a4cf6315c4ccfec416fdb6a65608dbc1b2eb3898f863442c6f6114a6406", kill_on_drop: false }`
[INFO] [stdout] ccc73a4cf6315c4ccfec416fdb6a65608dbc1b2eb3898f863442c6f6114a6406