[INFO] cloning repository https://github.com/PizzasBear/mxos
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/PizzasBear/mxos" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPizzasBear%2Fmxos", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPizzasBear%2Fmxos'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 47562d1b65dec291c074d1c2891bb30a7c8f252f
[INFO] testing PizzasBear/mxos against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPizzasBear%2Fmxos" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/PizzasBear/mxos on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-3/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-3/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/PizzasBear/mxos
[INFO] finished tweaking git repo https://github.com/PizzasBear/mxos
[INFO] tweaked toml for git repo https://github.com/PizzasBear/mxos written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/PizzasBear/mxos already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded x86_64 v0.14.6
[INFO] [stderr]   Downloaded multiboot2 v0.12.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a97887544316b9e1106d94970b09c998a99d6cac1f659c47c7b21a29a89784cf
[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" "a97887544316b9e1106d94970b09c998a99d6cac1f659c47c7b21a29a89784cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a97887544316b9e1106d94970b09c998a99d6cac1f659c47c7b21a29a89784cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a97887544316b9e1106d94970b09c998a99d6cac1f659c47c7b21a29a89784cf", kill_on_drop: false }`
[INFO] [stdout] a97887544316b9e1106d94970b09c998a99d6cac1f659c47c7b21a29a89784cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f20f42cfefdc0c282ba42b8fc01deec2a098bfc76d4b423e74633b12af2bfe87
[INFO] running `Command { std: "docker" "start" "-a" "f20f42cfefdc0c282ba42b8fc01deec2a098bfc76d4b423e74633b12af2bfe87", kill_on_drop: false }`
[INFO] [stderr]    Compiling x86_64 v0.14.6
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling bit_field v0.10.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling volatile v0.4.4
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling lock_api v0.4.5
[INFO] [stderr]    Compiling multiboot2 v0.12.2
[INFO] [stderr]    Compiling spin v0.9.2
[INFO] [stderr]    Compiling uart_16550 v0.2.15
[INFO] [stderr]    Compiling mxos v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `core::ptr`
[INFO] [stdout]   --> src/mem/mod.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use core::ptr;
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: language item required, but not found: `eh_personality`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mxos` due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "f20f42cfefdc0c282ba42b8fc01deec2a098bfc76d4b423e74633b12af2bfe87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f20f42cfefdc0c282ba42b8fc01deec2a098bfc76d4b423e74633b12af2bfe87", kill_on_drop: false }`
[INFO] [stdout] f20f42cfefdc0c282ba42b8fc01deec2a098bfc76d4b423e74633b12af2bfe87