[INFO] cloning repository https://github.com/dhairyanadapara/rust-os
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dhairyanadapara/rust-os" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdhairyanadapara%2Frust-os", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdhairyanadapara%2Frust-os'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 935b2effc0653a695b0b3d0e115741605ba8f22f
[INFO] checking dhairyanadapara/rust-os against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdhairyanadapara%2Frust-os" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dhairyanadapara/rust-os on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-1/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/dhairyanadapara/rust-os
[INFO] finished tweaking git repo https://github.com/dhairyanadapara/rust-os
[INFO] tweaked toml for git repo https://github.com/dhairyanadapara/rust-os written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/dhairyanadapara/rust-os already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] af2d4c1e65924da548f85a1bc9bbf0f0ee652afb92700b1ae07ffaa20d453ea4
[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" "af2d4c1e65924da548f85a1bc9bbf0f0ee652afb92700b1ae07ffaa20d453ea4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "af2d4c1e65924da548f85a1bc9bbf0f0ee652afb92700b1ae07ffaa20d453ea4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af2d4c1e65924da548f85a1bc9bbf0f0ee652afb92700b1ae07ffaa20d453ea4", kill_on_drop: false }`
[INFO] [stdout] af2d4c1e65924da548f85a1bc9bbf0f0ee652afb92700b1ae07ffaa20d453ea4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 12aa7fce53398060e47a9edc535c7fb4fa28aa46dfcc4c486daf30f29ad6119d
[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" "12aa7fce53398060e47a9edc535c7fb4fa28aa46dfcc4c486daf30f29ad6119d", kill_on_drop: false }`
[INFO] [stderr]    Compiling bootloader v0.9.16
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking volatile v0.2.7
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking rust-os v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]    --> src/vga_buffer.rs:137:61
[INFO] [stdout]     |
[INFO] [stdout] 137 |         ($crate::vga_buffer::_print(format_args!($($arg)*)));
[INFO] [stdout]     |                                                             ^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/main.rs:13:5
[INFO] [stdout]     |
[INFO] [stdout] 13  |     println!("{}", _info);
[INFO] [stdout]     |     ---------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(semicolon_in_expressions_from_macros)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]     = note: this warning originates in the macro `$crate::print` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]    --> src/vga_buffer.rs:137:61
[INFO] [stdout]     |
[INFO] [stdout] 137 |         ($crate::vga_buffer::_print(format_args!($($arg)*)));
[INFO] [stdout]     |                                                             ^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/main.rs:26:5
[INFO] [stdout]     |
[INFO] [stdout] 26  |     println!("Hello, It's {}\n", "me");
[INFO] [stdout]     |     ----------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]     = note: this warning originates in the macro `$crate::print` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]    --> src/vga_buffer.rs:137:61
[INFO] [stdout]     |
[INFO] [stdout] 137 |         ($crate::vga_buffer::_print(format_args!($($arg)*)));
[INFO] [stdout]     |                                                             ^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/main.rs:28:5
[INFO] [stdout]     |
[INFO] [stdout] 28  |     println!("Hello from the other side");
[INFO] [stdout]     |     -------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]     = note: this warning originates in the macro `$crate::print` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]    --> src/vga_buffer.rs:137:61
[INFO] [stdout]     |
[INFO] [stdout] 137 |         ($crate::vga_buffer::_print(format_args!($($arg)*)));
[INFO] [stdout]     |                                                             ^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/main.rs:13:5
[INFO] [stdout]     |
[INFO] [stdout] 13  |     println!("{}", _info);
[INFO] [stdout]     |     ---------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(semicolon_in_expressions_from_macros)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]     = note: this warning originates in the macro `$crate::print` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]    --> src/vga_buffer.rs:137:61
[INFO] [stdout]     |
[INFO] [stdout] 137 |         ($crate::vga_buffer::_print(format_args!($($arg)*)));
[INFO] [stdout]     |                                                             ^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/main.rs:26:5
[INFO] [stdout]     |
[INFO] [stdout] 26  |     println!("Hello, It's {}\n", "me");
[INFO] [stdout]     |     ----------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]     = note: this warning originates in the macro `$crate::print` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]    --> src/vga_buffer.rs:137:61
[INFO] [stdout]     |
[INFO] [stdout] 137 |         ($crate::vga_buffer::_print(format_args!($($arg)*)));
[INFO] [stdout]     |                                                             ^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/main.rs:28:5
[INFO] [stdout]     |
[INFO] [stdout] 28  |     println!("Hello from the other side");
[INFO] [stdout]     |     -------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]     = note: this warning originates in the macro `$crate::print` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stdout]   --> src/main.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | 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/33fdb797f59421c7bbecaa4588ed5d7a31a9494a/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-1dd6c19f0820d51d.rlib
[INFO] [stdout]    = note: second definition in the local crate (`rust_os`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0152`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust-os` due to 2 previous errors; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "12aa7fce53398060e47a9edc535c7fb4fa28aa46dfcc4c486daf30f29ad6119d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12aa7fce53398060e47a9edc535c7fb4fa28aa46dfcc4c486daf30f29ad6119d", kill_on_drop: false }`
[INFO] [stdout] 12aa7fce53398060e47a9edc535c7fb4fa28aa46dfcc4c486daf30f29ad6119d