[INFO] cloning repository https://github.com/levkropp/kevlar
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/levkropp/kevlar" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flevkropp%2Fkevlar", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flevkropp%2Fkevlar'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 79e744d49d5958ac04ed7b8ca7a2ec6cc6bbeca9
[INFO] testing levkropp/kevlar against 1.95.0 for beta-1.96-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flevkropp%2Fkevlar" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-3-tc1/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/levkropp/kevlar
[INFO] finished tweaking git repo https://github.com/levkropp/kevlar
[INFO] tweaked toml for git repo https://github.com/levkropp/kevlar written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/levkropp/kevlar 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 git repo https://github.com/levkropp/kevlar 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 managed v0.8.0
[INFO] [stderr]   Downloaded buddy_system_allocator v0.11.0
[INFO] [stderr]   Downloaded atomic_refcell v0.1.13
[INFO] [stderr]   Downloaded defmt v0.3.100
[INFO] [stderr]   Downloaded unwinding v0.2.8
[INFO] [stderr]   Downloaded defmt-parser v1.0.0
[INFO] [stderr]   Downloaded spin v0.10.0
[INFO] [stderr]   Downloaded scroll v0.13.0
[INFO] [stderr]   Downloaded defmt-macros v1.0.1
[INFO] [stderr]   Downloaded vte v0.13.1
[INFO] [stderr]   Downloaded defmt v1.0.1
[INFO] [stderr]   Downloaded smoltcp v0.12.0
[INFO] [stderr]   Downloaded goblin v0.10.5
[INFO] [stderr]   Downloaded x86 v0.52.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 1431ff30803151d6c2b5d87e27576f5cc136390a9ac4b4a819acdde55af3786c
[INFO] running `Command { std: "docker" "start" "-a" "1431ff30803151d6c2b5d87e27576f5cc136390a9ac4b4a819acdde55af3786c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1431ff30803151d6c2b5d87e27576f5cc136390a9ac4b4a819acdde55af3786c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1431ff30803151d6c2b5d87e27576f5cc136390a9ac4b4a819acdde55af3786c", kill_on_drop: false }`
[INFO] [stdout] 1431ff30803151d6c2b5d87e27576f5cc136390a9ac4b4a819acdde55af3786c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e28884980379a59166d42d331579f0037e3201ca82d6e84d42633b16847003cd
[INFO] running `Command { std: "docker" "start" "-a" "e28884980379a59166d42d331579f0037e3201ca82d6e84d42633b16847003cd", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling radium v0.7.0
[INFO] [stderr]    Compiling unicode-ident v1.0.24
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling log v0.4.29
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling tap v1.0.1
[INFO] [stderr]    Compiling x86 v0.52.0
[INFO] [stderr]    Compiling funty v2.0.0
[INFO] [stderr]    Compiling arrayvec v0.7.6
[INFO] [stderr]    Compiling cfg-if v1.0.4
[INFO] [stderr]    Compiling bit_field v0.10.3
[INFO] [stderr]    Compiling utf8parse v0.2.2
[INFO] [stderr]    Compiling bitflags v2.11.0
[INFO] [stderr]    Compiling lock_api v0.4.14
[INFO] [stderr]    Compiling atomic_refcell v0.1.13
[INFO] [stderr]    Compiling raw-cpuid v10.7.0
[INFO] [stderr]    Compiling wyz v0.5.1
[INFO] [stderr]    Compiling autocfg v1.5.0
[INFO] [stderr]    Compiling foldhash v0.1.5
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling heapless v0.8.0
[INFO] [stderr]    Compiling stable_deref_trait v1.2.1
[INFO] [stderr]    Compiling smoltcp v0.12.0
[INFO] [stderr]    Compiling kevlar_kernel v0.1.0 (/opt/rustwide/workdir/kernel)
[INFO] [stderr]    Compiling scroll v0.13.0
[INFO] [stderr]    Compiling log_filter v0.1.0 (/opt/rustwide/workdir/libs/log_filter)
[INFO] [stderr]    Compiling hash32 v0.3.1
[INFO] [stderr]    Compiling memoffset v0.9.1
[INFO] [stderr]    Compiling hashbrown v0.15.5
[INFO] [stderr]    Compiling plain v0.2.3
[INFO] [stderr]    Compiling managed v0.8.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling crossbeam-queue v0.3.12
[INFO] [stderr]    Compiling spin v0.10.0
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling gimli v0.32.3
[INFO] [stderr]    Compiling goblin v0.10.5
[INFO] [stderr]    Compiling bitvec v1.0.1
[INFO] [stderr]    Compiling buddy_system_allocator v0.11.0
[INFO] [stderr]    Compiling crossbeam v0.8.4
[INFO] [stderr]    Compiling vte_generate_state_changes v0.1.2
[INFO] [stderr]    Compiling vte v0.13.1
[INFO] [stderr]    Compiling unwinding v0.2.8
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/unwinding-0.2.8/src/lib.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     feature(lang_items)
[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 `unwinding` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "e28884980379a59166d42d331579f0037e3201ca82d6e84d42633b16847003cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e28884980379a59166d42d331579f0037e3201ca82d6e84d42633b16847003cd", kill_on_drop: false }`
[INFO] [stdout] e28884980379a59166d42d331579f0037e3201ca82d6e84d42633b16847003cd
