[INFO] updating cached repository alanwilhelm/hydra-agent
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/alanwilhelm/hydra-agent
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/alanwilhelm/hydra-agent" "work/ex/beta-1.38-1/sources/1.37.0/gh/alanwilhelm/hydra-agent"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/alanwilhelm/hydra-agent'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/alanwilhelm/hydra-agent" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/alanwilhelm/hydra-agent"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/alanwilhelm/hydra-agent'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0e8ed3336347237df9f55f2d872d578137d11e99
[INFO] sha for GitHub repo alanwilhelm/hydra-agent: 0e8ed3336347237df9f55f2d872d578137d11e99
[INFO] validating manifest of alanwilhelm/hydra-agent 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 alanwilhelm/hydra-agent 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 alanwilhelm/hydra-agent
[INFO] finished frobbing alanwilhelm/hydra-agent
[INFO] frobbed toml for alanwilhelm/hydra-agent written to work/ex/beta-1.38-1/sources/1.37.0/gh/alanwilhelm/hydra-agent/Cargo.toml
[INFO] started frobbing alanwilhelm/hydra-agent
[INFO] finished frobbing alanwilhelm/hydra-agent
[INFO] frobbed toml for alanwilhelm/hydra-agent written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/alanwilhelm/hydra-agent/Cargo.toml
[INFO] crate alanwilhelm/hydra-agent 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing alanwilhelm/hydra-agent 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-3/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/alanwilhelm/hydra-agent:/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] a453af37d311f3597eba9057a3d5c994be3908ee6600118c362dd745189fd06e
[INFO] running `"docker" "start" "-a" "a453af37d311f3597eba9057a3d5c994be3908ee6600118c362dd745189fd06e"`
[INFO] [stderr]    Compiling gcc v0.3.53
[INFO] [stderr]    Compiling libc v0.2.30
[INFO] [stderr]    Compiling openssl v0.9.17
[INFO] [stderr]    Compiling itoa v0.3.3
[INFO] [stderr]    Compiling openssl-probe v0.1.1
[INFO] [stderr]    Compiling serde v1.0.12
[INFO] [stderr]    Compiling unicode-bidi v0.2.6
[INFO] [stderr]    Compiling base64 v0.6.0
[INFO] [stderr]    Compiling jed v0.1.2
[INFO] [stderr]    Compiling url v1.5.1
[INFO] [stderr]    Compiling serde_derive v1.0.12
[INFO] [stderr]    Compiling cmake v0.1.25
[INFO] [stderr]    Compiling rand v0.3.16
[INFO] [stderr]    Compiling time v0.1.38
[INFO] [stderr]    Compiling num_cpus v1.6.2
[INFO] [stderr] warning[E0713]: borrow may still be in use when destructor runs
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/url-1.5.1/src/form_urlencoded.rs:251:40
[INFO] [stderr]     |
[INFO] [stderr] 249 | impl<'a> Target for ::UrlQuery<'a> {
[INFO] [stderr]     |      -- lifetime `'a` defined here
[INFO] [stderr] 250 |     fn as_mut_string(&mut self) -> &mut String { &mut self.url.serialization }
[INFO] [stderr] 251 |     fn finish(self) -> &'a mut ::Url { self.url }
[INFO] [stderr]     |                                        ^^^^^^^^ - here, drop of `self` needs exclusive access to `*self.url`, because the type `UrlQuery<'_>` implements the `Drop` trait
[INFO] [stderr]     |                                        |
[INFO] [stderr]     |                                        returning this value requires that `*self.url` is borrowed for `'a`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]     = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]     = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr]    Compiling unix_socket v0.5.0
[INFO] [stderr]    Compiling filetime v0.1.10
[INFO] [stderr]    Compiling libz-sys v1.0.16
[INFO] [stderr]    Compiling openssl-sys v0.9.17
[INFO] [stderr]    Compiling miniz-sys v0.1.9
[INFO] [stderr]    Compiling curl-sys v0.3.14
[INFO] [stderr]    Compiling sys-info v0.5.1
[INFO] [stderr]    Compiling libssh2-sys v0.2.6
[INFO] [stderr]    Compiling libgit2-sys v0.6.14
[INFO] [stderr]    Compiling tar v0.3.4
[INFO] [stderr]    Compiling uuid v0.2.3
[INFO] [stderr]    Compiling hyper v0.10.13
[INFO] [stderr]    Compiling url v0.5.10
[INFO] [stderr]    Compiling flate2 v0.2.19
[INFO] [stderr]    Compiling hyperlocal v0.3.0
[INFO] [stderr]    Compiling serde_json v1.0.3
[INFO] [stderr]    Compiling hyper-openssl v0.2.7
[INFO] [stderr]    Compiling shiplift v0.3.2
[INFO] [stderr]    Compiling git2 v0.6.8
[INFO] [stderr]    Compiling hydra_agent v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `ErrorKind`
[INFO] [stderr]  --> src/profiler/mod.rs:3:22
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::io::{Error, ErrorKind};
[INFO] [stderr]   |                      ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ErrorKind`
[INFO] [stderr]  --> src/git/mod.rs:3:22
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::io::{Error, ErrorKind};
[INFO] [stderr]   |                      ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/main.rs:21:21
[INFO] [stderr]    |
[INFO] [stderr] 21 |                 Err(e) => println!("{}", "{\"error\" : \"error\"}"),
[INFO] [stderr]    |                     ^ help: consider prefixing with an underscore: `_e`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/main.rs:23:13
[INFO] [stderr]    |
[INFO] [stderr] 23 |         Err(e) => println!("{}", "{\"error\" : \"error\"}"),
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]  --> src/serializer/mod.rs:8:13
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let mut s: String = String::new();
[INFO] [stderr]   |             ^ help: consider prefixing with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `z`
[INFO] [stderr]   --> src/profiler/mod.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |     let z: u32 = u32::min_value();
[INFO] [stderr]    |         ^ help: consider prefixing with an underscore: `_z`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/profiler/mod.rs:22:13
[INFO] [stderr]    |
[INFO] [stderr] 22 |         Err(e) => undef.clone(),
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/profiler/mod.rs:27:13
[INFO] [stderr]    |
[INFO] [stderr] 27 |         Err(e) => json_z.clone(),
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/profiler/mod.rs:32:13
[INFO] [stderr]    |
[INFO] [stderr] 32 |         Err(e) => undef.clone(),
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/profiler/mod.rs:37:13
[INFO] [stderr]    |
[INFO] [stderr] 37 |         Err(e) => undef.clone(),
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/profiler/mod.rs:42:13
[INFO] [stderr]    |
[INFO] [stderr] 42 |         Err(e) => undef.clone(),
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `repo`
[INFO] [stderr]   --> src/git/mod.rs:11:7
[INFO] [stderr]    |
[INFO] [stderr] 11 |   let repo = match Repository::clone(url, ".hydra") {
[INFO] [stderr]    |       ^^^^ help: consider prefixing with an underscore: `_repo`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `remote_repo`
[INFO] [stderr]  --> src/git/mod.rs:7:26
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn clone_remote_repo(remote_repo: &str) -> Result<(String), Error>{
[INFO] [stderr]   |                          ^^^^^^^^^^^ help: consider prefixing with an underscore: `_remote_repo`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/serializer/mod.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let mut s: String = String::new();
[INFO] [stderr]   |         ----^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `status`
[INFO] [stderr]  --> src/docker/mod.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn status() {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `clone_remote_repo`
[INFO] [stderr]  --> src/git/mod.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn clone_remote_repo(remote_repo: &str) -> Result<(String), Error>{
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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/hydra_agent-86da9d0d7186bb73.hydra_agent.5lf5r69t-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/hydra_agent-86da9d0d7186bb73.hydra_agent.5lf5r69t-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/hydra_agent-86da9d0d7186bb73.hydra_agent.5lf5r69t-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/hydra_agent-86da9d0d7186bb73.hydra_agent.5lf5r69t-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/hydra_agent-86da9d0d7186bb73.hydra_agent.5lf5r69t-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/hydra_agent-86da9d0d7186bb73.hydra_agent.5lf5r69t-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/hydra_agent-86da9d0d7186bb73.hydra_agent.5lf5r69t-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/hydra_agent-86da9d0d7186bb73.hydra_agent.5lf5r69t-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/hydra_agent-86da9d0d7186bb73.hydra_agent.5lf5r69t-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/hydra_agent-86da9d0d7186bb73.hydra_agent.5lf5r69t-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/hydra_agent-86da9d0d7186bb73.hydra_agent.5lf5r69t-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/hydra_agent-86da9d0d7186bb73.hydra_agent.5lf5r69t-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/hydra_agent-86da9d0d7186bb73.hydra_agent.5lf5r69t-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/hydra_agent-86da9d0d7186bb73.hydra_agent.5lf5r69t-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/hydra_agent-86da9d0d7186bb73.hydra_agent.5lf5r69t-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/hydra_agent-86da9d0d7186bb73.hydra_agent.5lf5r69t-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/hydra_agent-86da9d0d7186bb73" "/opt/crater/target/debug/deps/hydra_agent-86da9d0d7186bb73.33anwc7vihvjm425.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/crater/target/debug/deps" "-L" "/opt/crater/target/debug/build/libgit2-sys-be04e1aa8ae9c135/out/lib" "-L" "/opt/crater/target/debug/build/curl-sys-2703d11e48a9978a/out/lib" "-L" "/usr/lib/x86_64-linux-gnu" "-L" "/opt/crater/target/debug/build/libssh2-sys-8f9196612494f3bc/out/lib" "-L" "/opt/crater/target/debug/build/miniz-sys-7f2457a251091ae4/out" "-L" "/opt/crater/target/debug/build/sys-info-c6fdb89e26975576/out" "-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/libgit2-1b1ea383a2c0dc1f.rlib" "/opt/crater/target/debug/deps/libopenssl_probe-0757d6a956b09104.rlib" "/opt/crater/target/debug/deps/liblibgit2_sys-b0ede0cd1f83833b.rlib" "/opt/crater/target/debug/deps/libcurl_sys-2afbfcea10058ba5.rlib" "/opt/crater/target/debug/deps/liblibssh2_sys-5e97f70e46469fc3.rlib" "/opt/crater/target/debug/deps/liblibz_sys-9a0cbce3b61cc50e.rlib" "/opt/crater/target/debug/deps/libshiplift-73c9ba36235ca7ef.rlib" "/opt/crater/target/debug/deps/libtar-628c3d2393a8e7ce.rlib" "/opt/crater/target/debug/deps/libfiletime-023eddbef4e0a8e8.rlib" "/opt/crater/target/debug/deps/libwinapi-be47d272a993a950.rlib" "/opt/crater/target/debug/deps/liburl-da223bbedaff021b.rlib" "/opt/crater/target/debug/deps/libunicode_bidi-0c706cd9d3628a1f.rlib" "/opt/crater/target/debug/deps/libuuid-989a613b3d04ca39.rlib" "/opt/crater/target/debug/deps/librand-977cfca83db72639.rlib" "/opt/crater/target/debug/deps/libjed-601caa79fed353ec.rlib" "/opt/crater/target/debug/deps/libflate2-9413fb96db8f83ee.rlib" "/opt/crater/target/debug/deps/libminiz_sys-3ad9234bd6da4d1e.rlib" "/opt/crater/target/debug/deps/libhyperlocal-b80ff77c0579e324.rlib" "/opt/crater/target/debug/deps/librustc_serialize-fc0a027b4489f806.rlib" "/opt/crater/target/debug/deps/libhyper_openssl-0e7eede9301eed62.rlib" "/opt/crater/target/debug/deps/libopenssl-26fe0427901f6c74.rlib" "/opt/crater/target/debug/deps/libopenssl_sys-88373db4f21e46ed.rlib" "/opt/crater/target/debug/deps/liblazy_static-c79c6b5832b0c3b4.rlib" "/opt/crater/target/debug/deps/libforeign_types-7e06858a9986c387.rlib" "/opt/crater/target/debug/deps/libbitflags-87aacccedafc3e9f.rlib" "/opt/crater/target/debug/deps/libantidote-2837fba42b28847b.rlib" "/opt/crater/target/debug/deps/libhyper-780ad87be00eb38f.rlib" "/opt/crater/target/debug/deps/libmime-f4066991bc8dafd6.rlib" "/opt/crater/target/debug/deps/liblanguage_tags-05e049e3a82cbfb0.rlib" "/opt/crater/target/debug/deps/libtypeable-9a5238d74bedca20.rlib" "/opt/crater/target/debug/deps/libtraitobject-69814f8367d06bb9.rlib" "/opt/crater/target/debug/deps/libnum_cpus-cbdcf6aea266d43b.rlib" "/opt/crater/target/debug/deps/libhttparse-07bacd5f5d6fd222.rlib" "/opt/crater/target/debug/deps/libunicase-55f8f45f3e3389ec.rlib" "/opt/crater/target/debug/deps/liburl-d04dd9c4cadf609c.rlib" "/opt/crater/target/debug/deps/libpercent_encoding-062bf22bfea839c4.rlib" "/opt/crater/target/debug/deps/libidna-6571c7ab218ed5e1.rlib" "/opt/crater/target/debug/deps/libunicode_normalization-e25b6a8886d9efb5.rlib" "/opt/crater/target/debug/deps/libunicode_bidi-79c5ab75c8481d7e.rlib" "/opt/crater/target/debug/deps/libmatches-d30b907681672587.rlib" "/opt/crater/target/debug/deps/libtime-6e7129b04ef9c57b.rlib" "/opt/crater/target/debug/deps/libbase64-213b2d81f6be76db.rlib" "/opt/crater/target/debug/deps/libsafemem-ce5caf881f5158b4.rlib" "/opt/crater/target/debug/deps/libbyteorder-9dd817c4c431e4ab.rlib" "/opt/crater/target/debug/deps/liblog-a742011664cf4f8c.rlib" "/opt/crater/target/debug/deps/libsys_info-cdeae9ed53a8070c.rlib" "/opt/crater/target/debug/deps/liblibc-45b8715d79258d3a.rlib" "/opt/crater/target/debug/deps/libserde_json-50e7dd60b276c998.rlib" "/opt/crater/target/debug/deps/libdtoa-76b1f20e1383b735.rlib" "/opt/crater/target/debug/deps/libitoa-c1abe6bc02bc9eaf.rlib" "/opt/crater/target/debug/deps/libnum_traits-5221bafb01d86714.rlib" "/opt/crater/target/debug/deps/libserde-10413c43d4f9881d.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" "-lz" "-lssl" "-lcrypto" "-lutil" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-lutil"
[INFO] [stderr]   = note: /opt/crater/target/debug/deps/libsys_info-cdeae9ed53a8070c.rlib(sys_info-cdeae9ed53a8070c.sys_info.7af7n15e-cgu.1.rcgu.o): In function `sys_info::os_type':
[INFO] [stderr]           /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/sys-info-0.5.1/lib.rs:135: undefined reference to `get_os_type'
[INFO] [stderr]           /opt/crater/target/debug/deps/libsys_info-cdeae9ed53a8070c.rlib(sys_info-cdeae9ed53a8070c.sys_info.7af7n15e-cgu.1.rcgu.o): In function `sys_info::os_release':
[INFO] [stderr]           /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/sys-info-0.5.1/lib.rs:152: undefined reference to `get_os_release'
[INFO] [stderr]           /opt/crater/target/debug/deps/libsys_info-cdeae9ed53a8070c.rlib(sys_info-cdeae9ed53a8070c.sys_info.7af7n15e-cgu.1.rcgu.o): In function `sys_info::cpu_speed':
[INFO] [stderr]           /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/sys-info-0.5.1/lib.rs:186: undefined reference to `get_cpu_speed'
[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 `hydra_agent`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "a453af37d311f3597eba9057a3d5c994be3908ee6600118c362dd745189fd06e"`
[INFO] running `"docker" "rm" "-f" "a453af37d311f3597eba9057a3d5c994be3908ee6600118c362dd745189fd06e"`
[INFO] [stdout] a453af37d311f3597eba9057a3d5c994be3908ee6600118c362dd745189fd06e