[INFO] cloning repository https://github.com/idcurran/cow_os-r
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/idcurran/cow_os-r" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fidcurran%2Fcow_os-r", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fidcurran%2Fcow_os-r'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0a5bdcf92ea80ffe86218538c1acfccf975bc4eb
[INFO] testing idcurran/cow_os-r against try#8262275854dc0e5381c9d42d56257d94932c5a87 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fidcurran%2Fcow_os-r" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/idcurran/cow_os-r on toolchain 8262275854dc0e5381c9d42d56257d94932c5a87
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-4/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/idcurran/cow_os-r
[INFO] removed 0 missing tests
[INFO] finished tweaking git repo https://github.com/idcurran/cow_os-r
[INFO] tweaked toml for git repo https://github.com/idcurran/cow_os-r written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/idcurran/cow_os-r already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded x86_64 v0.14.6
[INFO] [stderr]   Downloaded linked_list_allocator v0.9.0
[INFO] [stderr]   Downloaded bit_field v0.10.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 18377eec28f4b68f84857a6497894f5a42b2fd9f6773ab3b033d1f293d95123f
[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" "18377eec28f4b68f84857a6497894f5a42b2fd9f6773ab3b033d1f293d95123f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "18377eec28f4b68f84857a6497894f5a42b2fd9f6773ab3b033d1f293d95123f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18377eec28f4b68f84857a6497894f5a42b2fd9f6773ab3b033d1f293d95123f", kill_on_drop: false }`
[INFO] [stdout] 18377eec28f4b68f84857a6497894f5a42b2fd9f6773ab3b033d1f293d95123f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+8262275854dc0e5381c9d42d56257d94932c5a87" "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] e0780375b7741117ffff4dd1085b6aee6472acdc45acbb86837e8b01d08e4243
[INFO] running `Command { std: "docker" "start" "-a" "e0780375b7741117ffff4dd1085b6aee6472acdc45acbb86837e8b01d08e4243", kill_on_drop: false }`
[INFO] [stderr]    Compiling x86_64 v0.14.6
[INFO] [stderr]    Compiling futures-core v0.3.17
[INFO] [stderr]    Compiling futures-task v0.3.17
[INFO] [stderr]    Compiling volatile v0.4.4
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling bit_field v0.10.1
[INFO] [stderr]    Compiling crossbeam-queue v0.3.2
[INFO] [stderr]    Compiling bootloader v0.9.19
[INFO] [stderr]    Compiling pin-project-lite v0.2.7
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling spin v0.5.2
[INFO] [stderr]    Compiling conquer-util v0.3.0
[INFO] [stderr]    Compiling volatile v0.2.7
[INFO] [stderr]    Compiling pc-keyboard v0.5.1
[INFO] [stderr]    Compiling lock_api v0.4.5
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]    Compiling conquer-once v0.3.2
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling spinning_top v0.2.4
[INFO] [stderr]    Compiling spin v0.9.2
[INFO] [stderr]    Compiling linked_list_allocator v0.9.0
[INFO] [stderr]    Compiling pic8259 v0.10.2
[INFO] [stderr]    Compiling uart_16550 v0.2.15
[INFO] [stderr]    Compiling cow_os v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `alloc::collections::*`
[INFO] [stdout]   --> src/lib.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use alloc::collections::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[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
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cow_os` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "e0780375b7741117ffff4dd1085b6aee6472acdc45acbb86837e8b01d08e4243", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0780375b7741117ffff4dd1085b6aee6472acdc45acbb86837e8b01d08e4243", kill_on_drop: false }`
[INFO] [stdout] e0780375b7741117ffff4dd1085b6aee6472acdc45acbb86837e8b01d08e4243