[INFO] cloning repository https://github.com/jsportaro/blog_os
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jsportaro/blog_os" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjsportaro%2Fblog_os", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjsportaro%2Fblog_os'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c090a5beafabd8befe7ba16b70f84770c16dccfa
[INFO] checking jsportaro/blog_os against master#af3c6e733a40e671550e0f0f5aeecaa13772ba56 for pr-74989
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjsportaro%2Fblog_os" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jsportaro/blog_os on toolchain af3c6e733a40e671550e0f0f5aeecaa13772ba56
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-6/source/.cargo/config
[INFO] started tweaking git repo https://github.com/jsportaro/blog_os
[INFO] finished tweaking git repo https://github.com/jsportaro/blog_os
[INFO] tweaked toml for git repo https://github.com/jsportaro/blog_os written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/jsportaro/blog_os already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d2ca88f3c3807e04493c2e94c218078b5f68050851c0eee7ceecc6c9672481eb
[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" "d2ca88f3c3807e04493c2e94c218078b5f68050851c0eee7ceecc6c9672481eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d2ca88f3c3807e04493c2e94c218078b5f68050851c0eee7ceecc6c9672481eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2ca88f3c3807e04493c2e94c218078b5f68050851c0eee7ceecc6c9672481eb", kill_on_drop: false }`
[INFO] [stdout] d2ca88f3c3807e04493c2e94c218078b5f68050851c0eee7ceecc6c9672481eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "check" "--frozen" "--all" "--all-targets" "--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] 68b12aa9e6c2b67930151e04680754622f353ca6aa54f7edd50da236c95ff697
[INFO] running `Command { std: "docker" "start" "-a" "68b12aa9e6c2b67930151e04680754622f353ca6aa54f7edd50da236c95ff697", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling bootloader v0.9.5
[INFO] [stderr]     Checking blog_os v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: expected one of `.`, `;`, `?`, `}`, or an operator, found keyword `self`
[INFO] [stdout]   --> src/vga_buffer.rs:72:17
[INFO] [stdout]    |
[INFO] [stdout] 71 |                 }
[INFO] [stdout]    |                  - expected one of `.`, `;`, `?`, `}`, or an operator
[INFO] [stdout] 72 |                 self.column_position += 1;
[INFO] [stdout]    |                 ^^^^ unexpected token
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected `;`, found `writer`
[INFO] [stdout]   --> src/vga_buffer.rs:96:6
[INFO] [stdout]    |
[INFO] [stdout] 96 |     }
[INFO] [stdout]    |      ^ help: add `;` here
[INFO] [stdout] 97 | 
[INFO] [stdout] 98 |     writer.write_byte(b'H');
[INFO] [stdout]    |     ------ unexpected token
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected one of `.`, `;`, `?`, `}`, or an operator, found keyword `self`
[INFO] [stdout]   --> src/vga_buffer.rs:72:17
[INFO] [stdout]    |
[INFO] [stdout] 71 |                 }
[INFO] [stdout]    |                  - expected one of `.`, `;`, `?`, `}`, or an operator
[INFO] [stdout] 72 |                 self.column_position += 1;
[INFO] [stdout]    |                 ^^^^ unexpected token
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected `;`, found `writer`
[INFO] [stdout]   --> src/vga_buffer.rs:96:6
[INFO] [stdout]    |
[INFO] [stdout] 96 |     }
[INFO] [stdout]    |      ^ help: add `;` here
[INFO] [stdout] 97 | 
[INFO] [stdout] 98 |     writer.write_byte(b'H');
[INFO] [stdout]    |     ------ unexpected token
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: language item required, but not found: `eh_personality`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stdout]   --> src/main.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn panic(_info: &PanicInfo) -> ! {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the lang item is first defined in crate `std` (which `test` depends on)
[INFO] [stdout]    = note: first definition in `std` loaded from /opt/rustwide/rustup-home/toolchains/af3c6e733a40e671550e0f0f5aeecaa13772ba56/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-faa3fd6c69b73b7d.rlib
[INFO] [stdout]    = note: second definition in the local crate (`blog_os`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `blog_os`.
[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] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0152`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "68b12aa9e6c2b67930151e04680754622f353ca6aa54f7edd50da236c95ff697", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68b12aa9e6c2b67930151e04680754622f353ca6aa54f7edd50da236c95ff697", kill_on_drop: false }`
[INFO] [stdout] 68b12aa9e6c2b67930151e04680754622f353ca6aa54f7edd50da236c95ff697
