[INFO] cloning repository https://github.com/bennyz/os-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bennyz/os-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbennyz%2Fos-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbennyz%2Fos-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f26bfbfd3756493fa26c62b51f5f39ed99971ba2
[INFO] testing bennyz/os-rs against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbennyz%2Fos-rs" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bennyz/os-rs on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-10/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/bennyz/os-rs
[INFO] finished tweaking git repo https://github.com/bennyz/os-rs
[INFO] tweaked toml for git repo https://github.com/bennyz/os-rs written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/bennyz/os-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6f696a5414bad21cc9945db6277aaca1e26666712b54addc72d5dd61709a93e5
[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" "6f696a5414bad21cc9945db6277aaca1e26666712b54addc72d5dd61709a93e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6f696a5414bad21cc9945db6277aaca1e26666712b54addc72d5dd61709a93e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f696a5414bad21cc9945db6277aaca1e26666712b54addc72d5dd61709a93e5", kill_on_drop: false }`
[INFO] [stdout] 6f696a5414bad21cc9945db6277aaca1e26666712b54addc72d5dd61709a93e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] da24634821d918536814560cb331c0bd07e9d84c1d1b2c6d3230fa049bf0036c
[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" "da24634821d918536814560cb331c0bd07e9d84c1d1b2c6d3230fa049bf0036c", kill_on_drop: false }`
[INFO] [stderr]    Compiling bootloader v0.9.8
[INFO] [stderr]    Compiling spin v0.5.2
[INFO] [stderr]    Compiling volatile v0.2.7
[INFO] [stderr]    Compiling rlibc v1.0.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling os-rs 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/os_rs-0d3d0b5fc3cdb016.os_rs.5952a284-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/os_rs-0d3d0b5fc3cdb016.os_rs.5952a284-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/os_rs-0d3d0b5fc3cdb016.os_rs.5952a284-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/os_rs-0d3d0b5fc3cdb016.os_rs.5952a284-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/os_rs-0d3d0b5fc3cdb016.os_rs.5952a284-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/os_rs-0d3d0b5fc3cdb016.os_rs.5952a284-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/os_rs-0d3d0b5fc3cdb016.os_rs.5952a284-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/os_rs-0d3d0b5fc3cdb016.os_rs.5952a284-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/os_rs-0d3d0b5fc3cdb016.os_rs.5952a284-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/os_rs-0d3d0b5fc3cdb016.os_rs.5952a284-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/os_rs-0d3d0b5fc3cdb016.os_rs.5952a284-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/os_rs-0d3d0b5fc3cdb016.os_rs.5952a284-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/os_rs-0d3d0b5fc3cdb016.os_rs.5952a284-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/os_rs-0d3d0b5fc3cdb016.os_rs.5952a284-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/os_rs-0d3d0b5fc3cdb016.os_rs.5952a284-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/os_rs-0d3d0b5fc3cdb016.os_rs.5952a284-cgu.9.rcgu.o" "-Wl,--as-needed" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/432e145bd5a974c5b6f4dd9b352891bd7502b69d/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libvolatile-639641ab6606656a.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-d7dce8c38b7cb6b7.rlib" "/opt/rustwide/target/debug/deps/libspin-fb077f50e3139ea3.rlib" "/opt/rustwide/target/debug/deps/librlibc-70b54be074217ee5.rlib" "/opt/rustwide/rustup-home/toolchains/432e145bd5a974c5b6f4dd9b352891bd7502b69d/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-52d5241975807511.rlib" "/opt/rustwide/rustup-home/toolchains/432e145bd5a974c5b6f4dd9b352891bd7502b69d/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-9924c22ae1efcf66.rlib" "/opt/rustwide/rustup-home/toolchains/432e145bd5a974c5b6f4dd9b352891bd7502b69d/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-d1241f7bd234a268.rlib" "-Wl,-Bdynamic" "-Wl,--eh-frame-hdr" "-Wl,-znoexecstack" "-L" "/opt/rustwide/rustup-home/toolchains/432e145bd5a974c5b6f4dd9b352891bd7502b69d/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "/opt/rustwide/target/debug/deps/os_rs-0d3d0b5fc3cdb016" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs"
[INFO] [stdout]   = note: /usr/bin/ld: /opt/rustwide/target/debug/deps/os_rs-0d3d0b5fc3cdb016.os_rs.5952a284-cgu.11.rcgu.o: in function `_start':
[INFO] [stdout]           /opt/rustwide/workdir/src/main.rs:16: 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]   = help: some `extern` functions couldn't be found; some native libraries may need to be installed or have their path specified
[INFO] [stdout]   = note: use the `-l` flag to specify native libraries to link
[INFO] [stdout]   = note: use the `cargo:rustc-link-lib` directive to specify the native libraries to link with Cargo (see https://doc.rust-lang.org/cargo/reference/build-scripts.html#cargorustc-link-libkindname)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `os-rs`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "da24634821d918536814560cb331c0bd07e9d84c1d1b2c6d3230fa049bf0036c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da24634821d918536814560cb331c0bd07e9d84c1d1b2c6d3230fa049bf0036c", kill_on_drop: false }`
[INFO] [stdout] da24634821d918536814560cb331c0bd07e9d84c1d1b2c6d3230fa049bf0036c