[INFO] fetching crate vex 2.1.1...
[INFO] testing vex-2.1.1 against 1.49.0 for beta-1.50-1
[INFO] extracting crate vex 2.1.1 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate vex 2.1.1 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate vex 2.1.1
[INFO] finished tweaking crates.io crate vex 2.1.1
[INFO] tweaked toml for crates.io crate vex 2.1.1 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8b3202b7a0d229876454c3b13a1821fc5fb69d4d6424a2d5eb634f3f30b8be09
[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" "8b3202b7a0d229876454c3b13a1821fc5fb69d4d6424a2d5eb634f3f30b8be09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8b3202b7a0d229876454c3b13a1821fc5fb69d4d6424a2d5eb634f3f30b8be09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b3202b7a0d229876454c3b13a1821fc5fb69d4d6424a2d5eb634f3f30b8be09", kill_on_drop: false }`
[INFO] [stdout] 8b3202b7a0d229876454c3b13a1821fc5fb69d4d6424a2d5eb634f3f30b8be09
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a2225787f3c32a950e704efcbca2f52bb86896193e44369353c2f96027041b63
[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" "a2225787f3c32a950e704efcbca2f52bb86896193e44369353c2f96027041b63", kill_on_drop: false }`
[INFO] [stderr]    Compiling vex v2.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.63s
[INFO] running `Command { std: "docker" "inspect" "a2225787f3c32a950e704efcbca2f52bb86896193e44369353c2f96027041b63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2225787f3c32a950e704efcbca2f52bb86896193e44369353c2f96027041b63", kill_on_drop: false }`
[INFO] [stdout] a2225787f3c32a950e704efcbca2f52bb86896193e44369353c2f96027041b63
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+1.49.0" "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] 2f104fcb9d2d84d38fa7c8e6e084d72eb55bed515d9e4b5d1ae146449d748ab7
[INFO] running `Command { std: "docker" "start" "-a" "2f104fcb9d2d84d38fa7c8e6e084d72eb55bed515d9e4b5d1ae146449d748ab7", kill_on_drop: false }`
[INFO] [stderr]    Compiling vex v2.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.45s
[INFO] running `Command { std: "docker" "inspect" "2f104fcb9d2d84d38fa7c8e6e084d72eb55bed515d9e4b5d1ae146449d748ab7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f104fcb9d2d84d38fa7c8e6e084d72eb55bed515d9e4b5d1ae146449d748ab7", kill_on_drop: false }`
[INFO] [stdout] 2f104fcb9d2d84d38fa7c8e6e084d72eb55bed515d9e4b5d1ae146449d748ab7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 48253fa5fafe533a17c1eeb382fb8a8a2381dbb5374d513d724dc155124bdc7b
[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" "48253fa5fafe533a17c1eeb382fb8a8a2381dbb5374d513d724dc155124bdc7b", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/vex-a375e9a904a30c90
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests vex
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --test /opt/rustwide/workdir/src/lib.rs --crate-name vex -L dependency=/opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern vex=/opt/rustwide/target/debug/deps/libvex-a2a759ae15cf1207.rlib -C embed-bitcode=no` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "48253fa5fafe533a17c1eeb382fb8a8a2381dbb5374d513d724dc155124bdc7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48253fa5fafe533a17c1eeb382fb8a8a2381dbb5374d513d724dc155124bdc7b", kill_on_drop: false }`
[INFO] [stdout] 48253fa5fafe533a17c1eeb382fb8a8a2381dbb5374d513d724dc155124bdc7b