[INFO] fetching crate ketos 0.12.0...
[INFO] testing ketos-0.12.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate ketos 0.12.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate ketos 0.12.0 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ketos 0.12.0
[INFO] finished tweaking crates.io crate ketos 0.12.0
[INFO] tweaked toml for crates.io crate ketos 0.12.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate ketos 0.12.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded assert_matches v1.3.0
[INFO] [stderr]   Downloaded linefeed v0.6.0
[INFO] [stderr]   Downloaded ketos_derive v0.12.0
[INFO] [stderr]   Downloaded num-bigint v0.2.3
[INFO] [stderr]   Downloaded terminfo v0.6.1
[INFO] [stderr]   Downloaded mortal v0.2.1
[INFO] [stderr]   Downloaded smallstr v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8bddf85fde41510e22c370633e3f2ccb1400c8a3b83f9b4c6673149b367eb237
[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" "8bddf85fde41510e22c370633e3f2ccb1400c8a3b83f9b4c6673149b367eb237", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8bddf85fde41510e22c370633e3f2ccb1400c8a3b83f9b4c6673149b367eb237", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8bddf85fde41510e22c370633e3f2ccb1400c8a3b83f9b4c6673149b367eb237", kill_on_drop: false }`
[INFO] [stdout] 8bddf85fde41510e22c370633e3f2ccb1400c8a3b83f9b4c6673149b367eb237
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "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] 93648e913a9494c192d4425c617e1847203c967729a92953804c838d29bf34fc
[INFO] running `Command { std: "docker" "start" "-a" "93648e913a9494c192d4425c617e1847203c967729a92953804c838d29bf34fc", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling smallvec v1.1.0
[INFO] [stderr]    Compiling num-traits v0.2.10
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-bigint v0.2.3
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling dirs-sys v0.3.4
[INFO] [stderr]    Compiling smallvec v0.6.13
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling unicode-normalization v0.1.11
[INFO] [stderr]    Compiling smallstr v0.1.0
[INFO] [stderr]    Compiling dirs v2.0.2
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.2
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling terminfo v0.6.1
[INFO] [stderr]    Compiling num v0.2.0
[INFO] [stderr]    Compiling gumdrop_derive v0.7.0
[INFO] [stderr]    Compiling gumdrop v0.7.0
[INFO] [stderr]    Compiling mortal v0.2.1
[INFO] [stderr]    Compiling linefeed v0.6.0
[INFO] [stderr]    Compiling ketos v0.12.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/ketos/compile.rs:333:9
[INFO] [stdout]     |
[INFO] [stdout] 333 |         replace(&mut self.blocks, new_blocks);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.52s
[INFO] running `Command { std: "docker" "inspect" "93648e913a9494c192d4425c617e1847203c967729a92953804c838d29bf34fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93648e913a9494c192d4425c617e1847203c967729a92953804c838d29bf34fc", kill_on_drop: false }`
[INFO] [stdout] 93648e913a9494c192d4425c617e1847203c967729a92953804c838d29bf34fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fd659819373bd52ed7a177336d3289d2110be4892b4e41b84ec31a31ab8c74a0
[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" "fd659819373bd52ed7a177336d3289d2110be4892b4e41b84ec31a31ab8c74a0", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling assert_matches v1.3.0
[INFO] [stderr]    Compiling ketos_derive v0.12.0
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/ketos/compile.rs:333:9
[INFO] [stdout]     |
[INFO] [stdout] 333 |         replace(&mut self.blocks, new_blocks);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling ketos v0.12.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `ketos`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name ketos --edition=2018 src/ketos/lib.rs --error-format=json --json=diagnostic-rendered-ansi --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --test --cfg 'feature="default"' -C metadata=0c0d3e446fa6b5c3 -C extra-filename=-0c0d3e446fa6b5c3 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern assert_matches=/opt/rustwide/target/debug/deps/libassert_matches-e27ee78efaf9f9bb.rlib --extern byteorder=/opt/rustwide/target/debug/deps/libbyteorder-d9d0103afea89763.rlib --extern dirs=/opt/rustwide/target/debug/deps/libdirs-c626624768607783.rlib --extern gumdrop=/opt/rustwide/target/debug/deps/libgumdrop-6f6a1e3c3b23ac54.rlib --extern ketos_derive=/opt/rustwide/target/debug/deps/libketos_derive-4f3d51fd5ce8e2a0.so --extern linefeed=/opt/rustwide/target/debug/deps/liblinefeed-e9a8e085abc5a76c.rlib --extern num=/opt/rustwide/target/debug/deps/libnum-cfd280490dac5448.rlib --extern rand=/opt/rustwide/target/debug/deps/librand-f376bf86b3ce552d.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: linking with `cc` failed: signal: 9
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-Wl,--eh-frame-hdr" "-L" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/conv-6838579c3ce6880a.conv.11lx0opw-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/conv-6838579c3ce6880a.conv.11lx0opw-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/conv-6838579c3ce6880a.conv.11lx0opw-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/conv-6838579c3ce6880a.conv.11lx0opw-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/conv-6838579c3ce6880a.conv.11lx0opw-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/conv-6838579c3ce6880a.conv.11lx0opw-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/conv-6838579c3ce6880a.conv.11lx0opw-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/conv-6838579c3ce6880a.conv.11lx0opw-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/conv-6838579c3ce6880a.conv.11lx0opw-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/conv-6838579c3ce6880a.conv.11lx0opw-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/conv-6838579c3ce6880a.conv.11lx0opw-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/conv-6838579c3ce6880a.conv.11lx0opw-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/conv-6838579c3ce6880a.conv.11lx0opw-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/conv-6838579c3ce6880a.conv.11lx0opw-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/conv-6838579c3ce6880a.conv.11lx0opw-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/conv-6838579c3ce6880a.conv.11lx0opw-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/conv-6838579c3ce6880a" "/opt/rustwide/target/debug/deps/conv-6838579c3ce6880a.194scnw3jb1duyeb.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libtest-c99ebba9851136ef.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libterm-190ecd0479955c2e.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgetopts-10cf7eacb763a707.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunicode_width-5f0069e1a0595222.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_std-176a753cf8833059.rlib" "/opt/rustwide/target/debug/deps/libketos-000af367a7143bf6.rlib" "/opt/rustwide/target/debug/deps/librand-f376bf86b3ce552d.rlib" "/opt/rustwide/target/debug/deps/librand_chacha-4ddb518b2abe3c3a.rlib" "/opt/rustwide/target/debug/deps/libc2_chacha-28c4f6ca7d991334.rlib" "/opt/rustwide/target/debug/deps/libppv_lite86-c5c97510187b0809.rlib" "/opt/rustwide/target/debug/deps/librand_core-df77f49f7b8c118c.rlib" "/opt/rustwide/target/debug/deps/libgetrandom-bee040b6449bc906.rlib" "/opt/rustwide/target/debug/deps/liblibc-0bfe2d51e9fc3209.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-3bb9a546b52233f2.rlib" "/opt/rustwide/target/debug/deps/libnum-cfd280490dac5448.rlib" "/opt/rustwide/target/debug/deps/libnum_rational-d8a738124ad63a0c.rlib" "/opt/rustwide/target/debug/deps/libnum_iter-2693b57efbcdfd9a.rlib" "/opt/rustwide/target/debug/deps/libnum_complex-f92028c4709f10a7.rlib" "/opt/rustwide/target/debug/deps/libnum_bigint-4d6f78e621aa0e30.rlib" "/opt/rustwide/target/debug/deps/libnum_integer-d1cba41cb883b2c9.rlib" "/opt/rustwide/target/debug/deps/libnum_traits-3da7fb82ffdc88ff.rlib" "/opt/rustwide/target/debug/deps/libbyteorder-d9d0103afea89763.rlib" "/opt/rustwide/target/debug/deps/libassert_matches-e27ee78efaf9f9bb.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-7444fd17919e9af0.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-0ee2f67026959ab7.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-df1bcd1e82256d04.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-ed9ecf1b54021131.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-0ede66bb24e94b96.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-7c2de7f50940865c.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-b138d50085fd4683.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-6576870d8f2b9ae2.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-042a30c5f67b2c91.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-7b3f33d3dbe385dc.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-90b3063cd7b22527.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-17f9484f8dc4da1e.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-df38345acd9d92e1.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-a5e10ca10bdd9e54.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-9e5b4162eeef2cef.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-3a4e739a77468800.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-0f3a0c116d5e04d6.rlib" "-Wl,-Bdynamic" "-lutil" "-lutil" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc"
[INFO] [stdout]   = note: 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "fd659819373bd52ed7a177336d3289d2110be4892b4e41b84ec31a31ab8c74a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd659819373bd52ed7a177336d3289d2110be4892b4e41b84ec31a31ab8c74a0", kill_on_drop: false }`
[INFO] [stdout] fd659819373bd52ed7a177336d3289d2110be4892b4e41b84ec31a31ab8c74a0