[INFO] cloning repository https://github.com/fordburgess/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/fordburgess/rust-os" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffordburgess%2Frust-os", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffordburgess%2Frust-os'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7eca07d2b011480875216fa52a026a4085e98306
[INFO] testing fordburgess/rust-os against try#a7ee93192a766fb0dafa23def7154fc03cfcfc3e for pr-146989
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffordburgess%2Frust-os" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/fordburgess/rust-os
[INFO] finished tweaking git repo https://github.com/fordburgess/rust-os
[INFO] tweaked toml for git repo https://github.com/fordburgess/rust-os written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/fordburgess/rust-os on toolchain a7ee93192a766fb0dafa23def7154fc03cfcfc3e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a7ee93192a766fb0dafa23def7154fc03cfcfc3e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/fordburgess/rust-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" "+a7ee93192a766fb0dafa23def7154fc03cfcfc3e" "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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+a7ee93192a766fb0dafa23def7154fc03cfcfc3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fd168df192dbefa3d6d86ddd9d050840ccc3ab9da3c2be14e6e82be0be163b56
[INFO] running `Command { std: "docker" "start" "-a" "fd168df192dbefa3d6d86ddd9d050840ccc3ab9da3c2be14e6e82be0be163b56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd168df192dbefa3d6d86ddd9d050840ccc3ab9da3c2be14e6e82be0be163b56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd168df192dbefa3d6d86ddd9d050840ccc3ab9da3c2be14e6e82be0be163b56", kill_on_drop: false }`
[INFO] [stdout] fd168df192dbefa3d6d86ddd9d050840ccc3ab9da3c2be14e6e82be0be163b56
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+a7ee93192a766fb0dafa23def7154fc03cfcfc3e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1e2e771abf6d559facd2075805c3f7e9491ef2e727bde95a9277c854766b43ff
[INFO] running `Command { std: "docker" "start" "-a" "1e2e771abf6d559facd2075805c3f7e9491ef2e727bde95a9277c854766b43ff", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_os v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: linking with `cc` failed: exit status: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note:  "cc" "-m64" "/opt/rustwide/target/debug/deps/rustcntJgmW/symbols.o" "<1 object files omitted>" "-Wl,--as-needed" "-Wl,-Bstatic" "<sysroot>/lib/rustlib/x86_64-unknown-linux-gnu/lib/{libcore-*,libcompiler_builtins-*}.rlib" "-L" "/opt/rustwide/target/debug/deps/rustcntJgmW/raw-dylibs" "-Wl,-Bdynamic" "-B<sysroot>/lib/rustlib/x86_64-unknown-linux-gnu/bin/gcc-ld" "-fuse-ld=lld" "-Wl,--eh-frame-hdr" "-Wl,-z,noexecstack" "-L" "<sysroot>/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "/opt/rustwide/target/debug/deps/rust_os-22959da10c2c628f" "-Wl,--gc-sections" "-pie" "-Wl,-z,relro,-z,now" "-nodefaultlibs"
[INFO] [stdout]   = note: some arguments are omitted. use `--verbose` to show all linker arguments
[INFO] [stdout]   = note: rust-lld: error: duplicate symbol: _start
[INFO] [stdout]           >>> defined at /usr/lib/gcc/x86_64-linux-gnu/13/../../../x86_64-linux-gnu/Scrt1.o:(_start)
[INFO] [stdout]           >>> defined at main.rs:13 (src/main.rs:13)
[INFO] [stdout]           >>>            /opt/rustwide/target/debug/deps/rust_os-22959da10c2c628f.rust_os.eae2b7f2bd6758d3-cgu.0.rcgu.o:(.text._start+0x0)
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_os` (bin "rust_os") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "1e2e771abf6d559facd2075805c3f7e9491ef2e727bde95a9277c854766b43ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e2e771abf6d559facd2075805c3f7e9491ef2e727bde95a9277c854766b43ff", kill_on_drop: false }`
[INFO] [stdout] 1e2e771abf6d559facd2075805c3f7e9491ef2e727bde95a9277c854766b43ff