[INFO] cloning repository https://github.com/FelixBrgm/kfs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/FelixBrgm/kfs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFelixBrgm%2Fkfs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFelixBrgm%2Fkfs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 52802e8c595ce6068a10813ceb7c77d6e87a9b80
[INFO] checking FelixBrgm/kfs against try#0269aeccce4fd29ce9ad0ebd47a62e584d7e25ef for pr-147859
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFelixBrgm%2Fkfs" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-0-tc2/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-0-tc2/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/FelixBrgm/kfs
[INFO] finished tweaking git repo https://github.com/FelixBrgm/kfs
[INFO] tweaked toml for git repo https://github.com/FelixBrgm/kfs written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/FelixBrgm/kfs on toolchain 0269aeccce4fd29ce9ad0ebd47a62e584d7e25ef
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0269aeccce4fd29ce9ad0ebd47a62e584d7e25ef" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/FelixBrgm/kfs 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" "+0269aeccce4fd29ce9ad0ebd47a62e584d7e25ef" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/winstonallo/bitstruct.git`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+0269aeccce4fd29ce9ad0ebd47a62e584d7e25ef" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8666b1de67889875ba016df05a6170781127072a4b267209b792a2202c87fa27
[INFO] running `Command { std: "docker" "start" "-a" "8666b1de67889875ba016df05a6170781127072a4b267209b792a2202c87fa27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8666b1de67889875ba016df05a6170781127072a4b267209b792a2202c87fa27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8666b1de67889875ba016df05a6170781127072a4b267209b792a2202c87fa27", kill_on_drop: false }`
[INFO] [stdout] 8666b1de67889875ba016df05a6170781127072a4b267209b792a2202c87fa27
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+0269aeccce4fd29ce9ad0ebd47a62e584d7e25ef" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] feccafbab1028ffeff1ce94fb68d98e03272492053498db36e0eb8d050598338
[INFO] running `Command { std: "docker" "start" "-a" "feccafbab1028ffeff1ce94fb68d98e03272492053498db36e0eb8d050598338", kill_on_drop: false }`
[INFO] [stderr]    Compiling bitstruct v0.1.0 (https://github.com/winstonallo/bitstruct.git#fb7c9fdd)
[INFO] [stderr]    Compiling kfs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling syn v2.0.111
[INFO] [stderr]    Compiling macros v0.1.0 (https://github.com/winstonallo/bitstruct.git#fb7c9fdd)
[INFO] [stdout] error: unwinding panics are not supported without std
[INFO] [stdout]   |
[INFO] [stdout]   = help: using nightly cargo, use -Zbuild-std with panic="abort" to avoid unwinding
[INFO] [stdout]   = note: since the core library is usually precompiled with panic="unwind", rebuilding your crate with panic="abort" may not be enough to fix the problem
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: formatting may not be suitable for sub-register argument
[INFO] [stdout]    --> src/vmm/paging/init.rs:140:19
[INFO] [stdout]     |
[INFO] [stdout] 140 |         asm!("mov {}, cr0", out(reg) cr0);
[INFO] [stdout]     |                   ^^                 --- for this argument
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `{0:e}` to have the register formatted as `eax` (for 32-bit values)
[INFO] [stdout]     = help: or use `{0:r}` to keep the default formatting of `rax` (for 64-bit values)
[INFO] [stdout]     = note: `#[warn(asm_sub_register)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: formatting may not be suitable for sub-register argument
[INFO] [stdout]    --> src/vmm/paging/init.rs:146:24
[INFO] [stdout]     |
[INFO] [stdout] 146 |         asm!("mov cr0, {}", in(reg) cr0);
[INFO] [stdout]     |                        ^^           --- for this argument
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `{0:e}` to have the register formatted as `eax` (for 32-bit values)
[INFO] [stdout]     = help: or use `{0:r}` to keep the default formatting of `rax` (for 64-bit values)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: formatting may not be suitable for sub-register argument
[INFO] [stdout]    --> src/vmm/paging/init.rs:140:19
[INFO] [stdout]     |
[INFO] [stdout] 140 |         asm!("mov {}, cr0", out(reg) cr0);
[INFO] [stdout]     |                   ^^                 --- for this argument
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `{0:e}` to have the register formatted as `eax` (for 32-bit values)
[INFO] [stdout]     = help: or use `{0:r}` to keep the default formatting of `rax` (for 64-bit values)
[INFO] [stdout]     = note: `#[warn(asm_sub_register)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: formatting may not be suitable for sub-register argument
[INFO] [stdout]    --> src/vmm/paging/init.rs:146:24
[INFO] [stdout]     |
[INFO] [stdout] 146 |         asm!("mov cr0, {}", in(reg) cr0);
[INFO] [stdout]     |                        ^^           --- for this argument
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `{0:e}` to have the register formatted as `eax` (for 32-bit values)
[INFO] [stdout]     = help: or use `{0:r}` to keep the default formatting of `rax` (for 64-bit values)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `kfs` (lib test) due to 1 previous error; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "feccafbab1028ffeff1ce94fb68d98e03272492053498db36e0eb8d050598338", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "feccafbab1028ffeff1ce94fb68d98e03272492053498db36e0eb8d050598338", kill_on_drop: false }`
[INFO] [stdout] feccafbab1028ffeff1ce94fb68d98e03272492053498db36e0eb8d050598338