[INFO] crate ketos 0.12.0 is already in cache
[INFO] testing ketos-0.12.0 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate ketos 0.12.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate ketos 0.12.0 on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-7/source/Cargo.toml
[INFO] crate crates.io crate ketos 0.12.0 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=warn" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7461b538297331e77f63a72d5472fec96ee073530450bd003f39c97cbc6188df
[INFO] running `"docker" "start" "-a" "7461b538297331e77f63a72d5472fec96ee073530450bd003f39c97cbc6188df"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling num-traits v0.2.10
[INFO] [stderr]    Compiling num-bigint v0.2.3
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling smallvec v0.6.13
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling smallstr v0.1.0
[INFO] [stderr]    Compiling terminfo v0.6.1
[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 num-integer v0.1.41
[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] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]    --> src/ketos/compile.rs:333:9
[INFO] [stderr]     |
[INFO] [stderr] 333 |         replace(&mut self.blocks, new_blocks);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 03s
[INFO] running `"docker" "inspect" "7461b538297331e77f63a72d5472fec96ee073530450bd003f39c97cbc6188df"`
[INFO] running `"docker" "rm" "-f" "7461b538297331e77f63a72d5472fec96ee073530450bd003f39c97cbc6188df"`
[INFO] [stdout] 7461b538297331e77f63a72d5472fec96ee073530450bd003f39c97cbc6188df
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=warn" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d3645d6610350d9f6d6637fa4e088ea0dd799f6fffd31fac4586441bfa8d4ad2
[INFO] running `"docker" "start" "-a" "d3645d6610350d9f6d6637fa4e088ea0dd799f6fffd31fac4586441bfa8d4ad2"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling assert_matches v1.3.0
[INFO] [stderr]    Compiling ketos_derive v0.12.0
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]    --> src/ketos/compile.rs:333:9
[INFO] [stderr]     |
[INFO] [stderr] 333 |         replace(&mut self.blocks, new_blocks);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[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 -Cembed-bitcode=no -C debuginfo=2 --test --cfg 'feature="default"' -C metadata=409434bb77e69a16 -C extra-filename=-409434bb77e69a16 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern assert_matches=/opt/rustwide/target/debug/deps/libassert_matches-81556344e3a4bc26.rlib --extern byteorder=/opt/rustwide/target/debug/deps/libbyteorder-f8593b3755ad6d95.rlib --extern dirs=/opt/rustwide/target/debug/deps/libdirs-01fa98198503ab61.rlib --extern gumdrop=/opt/rustwide/target/debug/deps/libgumdrop-c4f16adaa530fdb5.rlib --extern ketos_derive=/opt/rustwide/target/debug/deps/libketos_derive-733b6419129daadd.so --extern linefeed=/opt/rustwide/target/debug/deps/liblinefeed-3c02b7440faf5282.rlib --extern num=/opt/rustwide/target/debug/deps/libnum-f2ec7d6f1224e51c.rlib --extern rand=/opt/rustwide/target/debug/deps/librand-271edf5c8ecd35eb.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "d3645d6610350d9f6d6637fa4e088ea0dd799f6fffd31fac4586441bfa8d4ad2"`
[INFO] running `"docker" "rm" "-f" "d3645d6610350d9f6d6637fa4e088ea0dd799f6fffd31fac4586441bfa8d4ad2"`
[INFO] [stdout] d3645d6610350d9f6d6637fa4e088ea0dd799f6fffd31fac4586441bfa8d4ad2