[INFO] cloning repository https://github.com/aiv2008/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/aiv2008/blog_os" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faiv2008%2Fblog_os", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faiv2008%2Fblog_os'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e017df3168047359e99e9368d92cf2db33c19099
[INFO] checking aiv2008/blog_os against try#8a2f6fe57adadb246778b8d41925d3dc46d468cb for pr-158320
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faiv2008%2Fblog_os" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-7-tc2/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/aiv2008/blog_os
[INFO] finished tweaking git repo https://github.com/aiv2008/blog_os
[INFO] tweaked toml for git repo https://github.com/aiv2008/blog_os written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/aiv2008/blog_os on toolchain 8a2f6fe57adadb246778b8d41925d3dc46d468cb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8a2f6fe57adadb246778b8d41925d3dc46d468cb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/aiv2008/blog_os 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" "+8a2f6fe57adadb246778b8d41925d3dc46d468cb" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] d031738da49a7732823556b3c8b34ed817ad535934d129920604d0df119e6c89
[INFO] running `Command { std: "docker" "start" "d031738da49a7732823556b3c8b34ed817ad535934d129920604d0df119e6c89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "d031738da49a7732823556b3c8b34ed817ad535934d129920604d0df119e6c89" "/opt/rustwide/cargo-home/bin/cargo" "+8a2f6fe57adadb246778b8d41925d3dc46d468cb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d031738da49a7732823556b3c8b34ed817ad535934d129920604d0df119e6c89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "d031738da49a7732823556b3c8b34ed817ad535934d129920604d0df119e6c89" "/opt/rustwide/cargo-home/bin/cargo" "+8a2f6fe57adadb246778b8d41925d3dc46d468cb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling bootloader v0.9.34
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking volatile v0.2.7
[INFO] [stderr]     Checking lazy_static v1.5.0
[INFO] [stderr]     Checking blog_os v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]    --> src/vga_buffer.rs:192:15
[INFO] [stdout]     |
[INFO] [stdout] 192 | pub fn _print(args: fmt::Arguments) {
[INFO] [stdout]     |               ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `HELLO` is never used
[INFO] [stdout]  --> src/main.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | static HELLO: &[u8] = b"hello world";
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `print_sth` is never used
[INFO] [stdout]    --> src/vga_buffer.rs:156:12
[INFO] [stdout]     |
[INFO] [stdout]  99 | impl Writer {
[INFO] [stdout]     | ----------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 156 |     pub fn print_sth() {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `Command { std: "docker" "inspect" "d031738da49a7732823556b3c8b34ed817ad535934d129920604d0df119e6c89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d031738da49a7732823556b3c8b34ed817ad535934d129920604d0df119e6c89", kill_on_drop: false }`
[INFO] [stdout] d031738da49a7732823556b3c8b34ed817ad535934d129920604d0df119e6c89
