[INFO] cloning repository https://github.com/alleycat-at-git/kernel
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/alleycat-at-git/kernel" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falleycat-at-git%2Fkernel", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falleycat-at-git%2Fkernel'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a8f3ce836d61a55bcd3c9b4ee09bbe2a732fe219
[INFO] testing alleycat-at-git/kernel against 1.54.0 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falleycat-at-git%2Fkernel" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/alleycat-at-git/kernel on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-11/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/alleycat-at-git/kernel
[INFO] finished tweaking git repo https://github.com/alleycat-at-git/kernel
[INFO] tweaked toml for git repo https://github.com/alleycat-at-git/kernel written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/alleycat-at-git/kernel already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--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-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e8f6b9c0876e78df370534972e353651006b12a517bc7d2200b097dd28d7c808
[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" "e8f6b9c0876e78df370534972e353651006b12a517bc7d2200b097dd28d7c808", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e8f6b9c0876e78df370534972e353651006b12a517bc7d2200b097dd28d7c808", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8f6b9c0876e78df370534972e353651006b12a517bc7d2200b097dd28d7c808", kill_on_drop: false }`
[INFO] [stdout] e8f6b9c0876e78df370534972e353651006b12a517bc7d2200b097dd28d7c808
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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=warn" "-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" "+1.54.0" "build" "--frozen" "--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] 7b855bb2a314a3af214dc5d4138bb65f42f0330907c13bb3fa7f81512b1d63c1
[INFO] running `Command { std: "docker" "start" "-a" "7b855bb2a314a3af214dc5d4138bb65f42f0330907c13bb3fa7f81512b1d63c1", kill_on_drop: false }`
[INFO] [stderr]    Compiling spin v0.5.2
[INFO] [stderr]    Compiling volatile v0.2.7
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling kernel v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: constant is never used: `HELLO`
[INFO] [stdout]   --> src/main.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | const HELLO: &[u8] = b"Hello World!";
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: linking with `cc` failed: exit status: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-m64" "/opt/rustwide/target/debug/deps/kernel-244274b0f6beb624.kernel.a23aor1g-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/kernel-244274b0f6beb624.kernel.a23aor1g-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/kernel-244274b0f6beb624.kernel.a23aor1g-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/kernel-244274b0f6beb624.kernel.a23aor1g-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/kernel-244274b0f6beb624.kernel.a23aor1g-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/kernel-244274b0f6beb624.kernel.a23aor1g-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/kernel-244274b0f6beb624.kernel.a23aor1g-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/kernel-244274b0f6beb624.kernel.a23aor1g-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/kernel-244274b0f6beb624.kernel.a23aor1g-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/kernel-244274b0f6beb624.kernel.a23aor1g-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/kernel-244274b0f6beb624.kernel.a23aor1g-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/kernel-244274b0f6beb624.kernel.a23aor1g-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/kernel-244274b0f6beb624.kernel.a23aor1g-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/kernel-244274b0f6beb624.kernel.a23aor1g-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/kernel-244274b0f6beb624.kernel.a23aor1g-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/kernel-244274b0f6beb624.kernel.a23aor1g-cgu.9.rcgu.o" "-Wl,--as-needed" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libvolatile-e85ca89249a96836.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-e389999b283e508a.rlib" "/opt/rustwide/target/debug/deps/libspin-0245be712b10aaf3.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-8063eea38dcc5e62.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-5b228734afae15ee.rlib" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-d6c7a399d95d173f.rlib" "-Wl,-Bdynamic" "-Wl,--eh-frame-hdr" "-Wl,-znoexecstack" "-L" "/opt/rustwide/rustup-home/toolchains/1.54.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "/opt/rustwide/target/debug/deps/kernel-244274b0f6beb624" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs"
[INFO] [stdout]   = note: /usr/bin/ld: /opt/rustwide/target/debug/deps/kernel-244274b0f6beb624.kernel.a23aor1g-cgu.15.rcgu.o: in function `_start':
[INFO] [stdout]           /opt/rustwide/workdir/src/main.rs:17: multiple definition of `_start'; /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o:(.text+0x0): first defined here
[INFO] [stdout]           /usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
[INFO] [stdout]           (.text+0x16): undefined reference to `__libc_csu_fini'
[INFO] [stdout]           /usr/bin/ld: (.text+0x1d): undefined reference to `__libc_csu_init'
[INFO] [stdout]           /usr/bin/ld: (.text+0x24): undefined reference to `main'
[INFO] [stdout]           /usr/bin/ld: (.text+0x2a): undefined reference to `__libc_start_main'
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `kernel`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "7b855bb2a314a3af214dc5d4138bb65f42f0330907c13bb3fa7f81512b1d63c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b855bb2a314a3af214dc5d4138bb65f42f0330907c13bb3fa7f81512b1d63c1", kill_on_drop: false }`
[INFO] [stdout] 7b855bb2a314a3af214dc5d4138bb65f42f0330907c13bb3fa7f81512b1d63c1
