[INFO] updating cached repository pfernie/synacor-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/pfernie/synacor-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/pfernie/synacor-rs" "work/ex/beta-1.38-1/sources/1.37.0/gh/pfernie/synacor-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/pfernie/synacor-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/pfernie/synacor-rs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/pfernie/synacor-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/pfernie/synacor-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5c2677d8145793b1085adcae0aa1b1cb73bef1dc
[INFO] sha for GitHub repo pfernie/synacor-rs: 5c2677d8145793b1085adcae0aa1b1cb73bef1dc
[INFO] validating manifest of pfernie/synacor-rs on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of pfernie/synacor-rs on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing pfernie/synacor-rs
[INFO] finished frobbing pfernie/synacor-rs
[INFO] frobbed toml for pfernie/synacor-rs written to work/ex/beta-1.38-1/sources/1.37.0/gh/pfernie/synacor-rs/Cargo.toml
[INFO] started frobbing pfernie/synacor-rs
[INFO] finished frobbing pfernie/synacor-rs
[INFO] frobbed toml for pfernie/synacor-rs written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/pfernie/synacor-rs/Cargo.toml
[INFO] crate pfernie/synacor-rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing pfernie/synacor-rs against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/pfernie/synacor-rs:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] fa5062edadbebf52df01a38e502a6b8121e337d52f6195d2b4768b0920732807
[INFO] running `"docker" "start" "-a" "fa5062edadbebf52df01a38e502a6b8121e337d52f6195d2b4768b0920732807"`
[INFO] [stderr]    Compiling gcc v0.3.41
[INFO] [stderr]    Compiling backtrace v0.3.0
[INFO] [stderr]    Compiling unicode-segmentation v1.0.1
[INFO] [stderr]    Compiling try_from v0.2.1
[INFO] [stderr]    Compiling memchr v1.0.1
[INFO] [stderr]    Compiling thread-id v3.0.0
[INFO] [stderr]    Compiling thread_local v0.3.2
[INFO] [stderr]    Compiling aho-corasick v0.6.1
[INFO] [stderr]    Compiling clap v2.20.0
[INFO] [stderr]    Compiling regex v0.2.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.5
[INFO] [stderr]    Compiling error-chain v0.7.2
[INFO] [stderr]    Compiling env_logger v0.4.0
[INFO] [stderr]    Compiling synacor v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/bin/foo.rs:46:9
[INFO] [stderr]    |
[INFO] [stderr] 46 |     let t = thread::Builder::new().stack_size(1024 * 1024 * 32).spawn(move || {
[INFO] [stderr]    |         ^ help: consider prefixing with an underscore: `_t`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/debugger/mod.rs:24:12
[INFO] [stderr]    |
[INFO] [stderr] 24 | impl AsMut<Inspectable + 'static> for VmState {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Inspectable + 'static`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/debugger/mod.rs:25:35
[INFO] [stderr]    |
[INFO] [stderr] 25 |     fn as_mut(&mut self) -> &mut (Inspectable + 'static) {
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Inspectable + 'static`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/debugger/mod.rs:34:12
[INFO] [stderr]    |
[INFO] [stderr] 34 | impl AsRef<Inspectable + 'static> for VmState {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Inspectable + 'static`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/debugger/mod.rs:35:27
[INFO] [stderr]    |
[INFO] [stderr] 35 |     fn as_ref(&self) -> &(Inspectable + 'static) {
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Inspectable + 'static`
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/memory.rs:326:14
[INFO] [stderr]     |
[INFO] [stderr] 326 |             0...MAX_ADDR => Ok(Value::Literal(u)),
[INFO] [stderr]     |              ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/memory.rs:327:18
[INFO] [stderr]     |
[INFO] [stderr] 327 |             32768...32776 => Register::try_from(u).map(Value::FromRegister),
[INFO] [stderr]     |                  ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::ascii::AsciiExt': use inherent methods instead
[INFO] [stderr]  --> src/debugger/mod.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::ascii::AsciiExt;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/errors.rs:2:1
[INFO] [stderr]    |
[INFO] [stderr] 2  | / error_chain!{
[INFO] [stderr] 3  | |     foreign_links {
[INFO] [stderr] 4  | |         Io(::std::io::Error);
[INFO] [stderr] 5  | |         ParseInt(::std::num::ParseIntError);
[INFO] [stderr] ...  |
[INFO] [stderr] 41 | |     }
[INFO] [stderr] 42 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ascii::AsciiExt`
[INFO] [stderr]  --> src/debugger/mod.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::ascii::AsciiExt;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: linking with `cc` failed: exit code: 1
[INFO] [stderr]   |
[INFO] [stderr]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-L" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/crater/target/debug/deps/synacor-514dbd0874045126.synacor.6rtjoj58-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/synacor-514dbd0874045126.synacor.6rtjoj58-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/synacor-514dbd0874045126.synacor.6rtjoj58-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/synacor-514dbd0874045126.synacor.6rtjoj58-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/synacor-514dbd0874045126.synacor.6rtjoj58-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/synacor-514dbd0874045126.synacor.6rtjoj58-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/synacor-514dbd0874045126.synacor.6rtjoj58-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/synacor-514dbd0874045126.synacor.6rtjoj58-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/synacor-514dbd0874045126.synacor.6rtjoj58-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/synacor-514dbd0874045126.synacor.6rtjoj58-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/synacor-514dbd0874045126.synacor.6rtjoj58-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/synacor-514dbd0874045126.synacor.6rtjoj58-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/synacor-514dbd0874045126.synacor.6rtjoj58-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/synacor-514dbd0874045126.synacor.6rtjoj58-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/synacor-514dbd0874045126.synacor.6rtjoj58-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/synacor-514dbd0874045126.synacor.6rtjoj58-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/synacor-514dbd0874045126" "/opt/crater/target/debug/deps/synacor-514dbd0874045126.53fbt8t585fntdl8.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/crater/target/debug/deps" "-L" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/libtry_from-74931d3deb1c25ad.rlib" "/opt/crater/target/debug/deps/liberror_chain-af8164321c5fadef.rlib" "/opt/crater/target/debug/deps/libbacktrace-5201846b14aef969.rlib" "/opt/crater/target/debug/deps/libbacktrace_sys-315df5075a6772b7.rlib" "/opt/crater/target/debug/deps/librustc_demangle-a63e03c53d847d30.rlib" "/opt/crater/target/debug/deps/libcfg_if-e594ac7fa20b1aa3.rlib" "/opt/crater/target/debug/deps/libdbghelp-d860676abe2fb31b.rlib" "/opt/crater/target/debug/deps/libwinapi-be47d272a993a950.rlib" "/opt/crater/target/debug/deps/libkernel32-ed10b6f453a27092.rlib" "/opt/crater/target/debug/deps/libenv_logger-e4b7a8d9f47f3a4b.rlib" "/opt/crater/target/debug/deps/libregex-0d57252e8a4fa5ee.rlib" "/opt/crater/target/debug/deps/libutf8_ranges-09a6e1d8631730f6.rlib" "/opt/crater/target/debug/deps/libregex_syntax-ff10189106dfac56.rlib" "/opt/crater/target/debug/deps/libthread_local-e8db20c67a58f66d.rlib" "/opt/crater/target/debug/deps/libunreachable-50f2ecea0581636d.rlib" "/opt/crater/target/debug/deps/libvoid-4fb26e3b0cb57bde.rlib" "/opt/crater/target/debug/deps/libthread_id-346dc560a00f9612.rlib" "/opt/crater/target/debug/deps/libaho_corasick-faee067e46754eaf.rlib" "/opt/crater/target/debug/deps/libmemchr-a2b6a0ff14ad1d16.rlib" "/opt/crater/target/debug/deps/liblibc-a442291025725117.rlib" "/opt/crater/target/debug/deps/liblog-f86f92691b4ababd.rlib" "/opt/crater/target/debug/deps/libbyteorder-46cb11aad7c12c3b.rlib" "-Wl,--start-group" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-1d6d86bd078a28e9.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-e9721e46a424e2a9.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace-c07193698f282147.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-6da45690f3863086.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-690797036dd27680.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-d3896ccbfd8eda2b.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-7cccc3739e3d7623.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-5e9ba178a513cd29.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-5ca9f83bf63d1f4b.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-bba1c7ef9e950882.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-e23c9de62012deb5.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-9b59dffdcd513d5d.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-17392340ab2e4a97.rlib" "-Wl,--end-group" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-ac21508a81e3f7f3.rlib" "-Wl,-Bdynamic" "-lutil" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-lutil"
[INFO] [stderr]   = note: /opt/crater/target/debug/deps/libbacktrace-5201846b14aef969.rlib(backtrace-5201846b14aef969.backtrace.4dfxuc4k-cgu.6.rcgu.o): In function `backtrace::symbolize::libbacktrace::init_state::{{closure}}':
[INFO] [stderr]           /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.0/src/symbolize/libbacktrace.rs:156: undefined reference to `backtrace_create_state'
[INFO] [stderr]           /opt/crater/target/debug/deps/libbacktrace-5201846b14aef969.rlib(backtrace-5201846b14aef969.backtrace.4dfxuc4k-cgu.6.rcgu.o): In function `backtrace::symbolize::libbacktrace::resolve':
[INFO] [stderr]           /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.0/src/symbolize/libbacktrace.rs:173: undefined reference to `backtrace_pcinfo'
[INFO] [stderr]           /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.0/src/symbolize/libbacktrace.rs:177: undefined reference to `backtrace_syminfo'
[INFO] [stderr]           collect2: error: ld returned 1 exit status
[INFO] [stderr]           
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `synacor`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "fa5062edadbebf52df01a38e502a6b8121e337d52f6195d2b4768b0920732807"`
[INFO] running `"docker" "rm" "-f" "fa5062edadbebf52df01a38e502a6b8121e337d52f6195d2b4768b0920732807"`
[INFO] [stdout] fa5062edadbebf52df01a38e502a6b8121e337d52f6195d2b4768b0920732807