[INFO] cloning repository https://github.com/cantsin/pcgs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cantsin/pcgs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcantsin%2Fpcgs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcantsin%2Fpcgs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d11ad86a8fe9b569980001ad9c92948408fff77c
[INFO] testing cantsin/pcgs against try#03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcantsin%2Fpcgs" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cantsin/pcgs on toolchain 03a1ea71b075ab964b5278bc6e74cd6c52c36ee0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-9/source/.cargo/config
[INFO] started tweaking git repo https://github.com/cantsin/pcgs
[INFO] finished tweaking git repo https://github.com/cantsin/pcgs
[INFO] tweaked toml for git repo https://github.com/cantsin/pcgs written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/cantsin/pcgs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9b8f865866350169ec51aaa7b7cabc44f579b99453019e2ce760bcae3f258d4a
[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" "9b8f865866350169ec51aaa7b7cabc44f579b99453019e2ce760bcae3f258d4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9b8f865866350169ec51aaa7b7cabc44f579b99453019e2ce760bcae3f258d4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b8f865866350169ec51aaa7b7cabc44f579b99453019e2ce760bcae3f258d4a", kill_on_drop: false }`
[INFO] [stdout] 9b8f865866350169ec51aaa7b7cabc44f579b99453019e2ce760bcae3f258d4a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7c27f44ff61ec060bcf8d76f044e5156a6a3c04ee33ed572afdc3182ff6c7783
[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" "7c27f44ff61ec060bcf8d76f044e5156a6a3c04ee33ed572afdc3182ff6c7783", kill_on_drop: false }`
[INFO] [stderr]    Compiling pcgs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/sparse_symmetric_matrix.rs:103:9
[INFO] [stdout]     |
[INFO] [stdout] 103 |         writeln!(f, "sparse({:?},...", rows);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/sparse_symmetric_matrix.rs:104:9
[INFO] [stdout]     |
[INFO] [stdout] 104 |         writeln!(f, "       {:?},...", columns);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/sparse_row_matrix.rs:86:9
[INFO] [stdout]    |
[INFO] [stdout] 86 |         writeln!(f, "sparse({:?},...", rows);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/sparse_row_matrix.rs:87:9
[INFO] [stdout]    |
[INFO] [stdout] 87 |         writeln!(f, "       {:?},...", columns);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.00s
[INFO] running `Command { std: "docker" "inspect" "7c27f44ff61ec060bcf8d76f044e5156a6a3c04ee33ed572afdc3182ff6c7783", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c27f44ff61ec060bcf8d76f044e5156a6a3c04ee33ed572afdc3182ff6c7783", kill_on_drop: false }`
[INFO] [stdout] 7c27f44ff61ec060bcf8d76f044e5156a6a3c04ee33ed572afdc3182ff6c7783
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen" "--no-run" "--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] 2ea176d4fb4f3d5aad2e3a0827cbf49abb002c8f58ef55cffb2e6ecd61798566
[INFO] running `Command { std: "docker" "start" "-a" "2ea176d4fb4f3d5aad2e3a0827cbf49abb002c8f58ef55cffb2e6ecd61798566", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.43
[INFO] [stderr]    Compiling num-traits v0.2.5
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling cc v1.0.22
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling winapi v0.2.8
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling utf8-ranges v0.1.3
[INFO] [stderr]    Compiling rustml v0.0.7
[INFO] [stderr]    Compiling regex-syntax v0.3.9
[INFO] [stderr]    Compiling unicode-width v0.1.5
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/sparse_symmetric_matrix.rs:103:9
[INFO] [stdout]     |
[INFO] [stdout] 103 |         writeln!(f, "sparse({:?},...", rows);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/sparse_symmetric_matrix.rs:104:9
[INFO] [stdout]     |
[INFO] [stdout] 104 |         writeln!(f, "       {:?},...", columns);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/sparse_row_matrix.rs:86:9
[INFO] [stdout]    |
[INFO] [stdout] 86 |         writeln!(f, "sparse({:?},...", rows);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/sparse_row_matrix.rs:87:9
[INFO] [stdout]    |
[INFO] [stdout] 87 |         writeln!(f, "       {:?},...", columns);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling getopts v0.2.18
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling rand v0.4.3
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling time v0.1.40
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]    Compiling thread_local v0.2.7
[INFO] [stderr] error: failed to run custom build command for `rustml v0.0.7`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/rustml-8c8c8bb474ca0db9/build-script-build` (exit code: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   /usr/bin/ld: cannot find -lopencv_highgui
[INFO] [stderr]   collect2: error: ld returned 1 exit status
[INFO] [stderr]   thread 'main' panicked at '
[INFO] [stderr] 
[INFO] [stderr]   OpenCV not found. On Ubuntu try 'sudo apt-get install libopencv-highgui-dev' before continuing.', /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustml-0.0.7/build.rs:25:5
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x5596fe864325 - backtrace::backtrace::libunwind::trace::hea89dfbbfe67f40d
[INFO] [stderr]                                  at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/libunwind.rs:86
[INFO] [stderr]      1:     0x5596fe864325 - backtrace::backtrace::trace_unsynchronized::h0513dd713d7644d4
[INFO] [stderr]                                  at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/mod.rs:66
[INFO] [stderr]      2:     0x5596fe864325 - std::sys_common::backtrace::_print_fmt::h040abae64e4a24a9
[INFO] [stderr]                                  at src/libstd/sys_common/backtrace.rs:78
[INFO] [stderr]      3:     0x5596fe864325 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hb4bdb37c3c335733
[INFO] [stderr]                                  at src/libstd/sys_common/backtrace.rs:59
[INFO] [stderr]      4:     0x5596fe885eac - core::fmt::write::h540ac4a6a1232abc
[INFO] [stderr]                                  at src/libcore/fmt/mod.rs:1076
[INFO] [stderr]      5:     0x5596fe862682 - std::io::Write::write_fmt::h5ffa1b5a7703af47
[INFO] [stderr]                                  at src/libstd/io/mod.rs:1539
[INFO] [stderr]      6:     0x5596fe866780 - std::sys_common::backtrace::_print::hb55cc635eaf1882e
[INFO] [stderr]                                  at src/libstd/sys_common/backtrace.rs:62
[INFO] [stderr]      7:     0x5596fe866780 - std::sys_common::backtrace::print::h2b2218fa55714084
[INFO] [stderr]                                  at src/libstd/sys_common/backtrace.rs:49
[INFO] [stderr]      8:     0x5596fe866780 - std::panicking::default_hook::{{closure}}::h578517c025765cf3
[INFO] [stderr]                                  at src/libstd/panicking.rs:198
[INFO] [stderr]      9:     0x5596fe8664cc - std::panicking::default_hook::h4cafc94c2fc640fb
[INFO] [stderr]                                  at src/libstd/panicking.rs:217
[INFO] [stderr]     10:     0x5596fe866dc3 - std::panicking::rust_panic_with_hook::h3eeb5001beeca5c3
[INFO] [stderr]                                  at src/libstd/panicking.rs:526
[INFO] [stderr]     11:     0x5596fe859d3d - std::panicking::begin_panic::h762e8a7d36b59673
[INFO] [stderr]                                  at /rustc/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/src/libstd/panicking.rs:456
[INFO] [stderr]     12:     0x5596fe8560a9 - build_script_build::try_gcc::hc9907f4948415f32
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustml-0.0.7/build.rs:25
[INFO] [stderr]     13:     0x5596fe8561b7 - build_script_build::main::h7f76da308167a86e
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustml-0.0.7/build.rs:30
[INFO] [stderr]     14:     0x5596fe859c0b - std::rt::lang_start::{{closure}}::hc20602fb7a1f9b20
[INFO] [stderr]                                  at /rustc/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/src/libstd/rt.rs:67
[INFO] [stderr]     15:     0x5596fe867193 - std::rt::lang_start_internal::{{closure}}::h155f3093add35bce
[INFO] [stderr]                                  at src/libstd/rt.rs:52
[INFO] [stderr]     16:     0x5596fe867193 - std::panicking::try::do_call::h45f1f66ee6b987d6
[INFO] [stderr]                                  at src/libstd/panicking.rs:348
[INFO] [stderr]     17:     0x5596fe867193 - std::panicking::try::h0924dfb942cef7e3
[INFO] [stderr]                                  at src/libstd/panicking.rs:325
[INFO] [stderr]     18:     0x5596fe867193 - std::panic::catch_unwind::h883180846c5b53fa
[INFO] [stderr]                                  at src/libstd/panic.rs:394
[INFO] [stderr]     19:     0x5596fe867193 - std::rt::lang_start_internal::he9284d43a52786c5
[INFO] [stderr]                                  at src/libstd/rt.rs:51
[INFO] [stderr]     20:     0x5596fe859be7 - std::rt::lang_start::h9c49d2bd66b3db2c
[INFO] [stderr]                                  at /rustc/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/src/libstd/rt.rs:67
[INFO] [stderr]     21:     0x5596fe85622a - main
[INFO] [stderr]     22:     0x7fb8078f20b3 - __libc_start_main
[INFO] [stderr]     23:     0x5596fe85017e - _start
[INFO] [stderr]     24:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "2ea176d4fb4f3d5aad2e3a0827cbf49abb002c8f58ef55cffb2e6ecd61798566", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ea176d4fb4f3d5aad2e3a0827cbf49abb002c8f58ef55cffb2e6ecd61798566", kill_on_drop: false }`
[INFO] [stdout] 2ea176d4fb4f3d5aad2e3a0827cbf49abb002c8f58ef55cffb2e6ecd61798566