[INFO] fetching crate timely 0.11.1...
[INFO] testing timely-0.11.1 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate timely 0.11.1 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate timely 0.11.1 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 timely 0.11.1
[INFO] finished tweaking crates.io crate timely 0.11.1
[INFO] tweaked toml for crates.io crate timely 0.11.1 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate timely 0.11.1 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 timely_sort v0.1.6
[INFO] [stderr]   Downloaded bincode v1.2.0
[INFO] [stderr]   Downloaded abomonation v0.7.3
[INFO] [stderr]   Downloaded timely_communication v0.11.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", 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] 718079a308b7bcb2f00d66074837b3fd6e751740d21a9f3f6862dadc4090beb1
[INFO] running `Command { std: "docker" "start" "-a" "718079a308b7bcb2f00d66074837b3fd6e751740d21a9f3f6862dadc4090beb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "718079a308b7bcb2f00d66074837b3fd6e751740d21a9f3f6862dadc4090beb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "718079a308b7bcb2f00d66074837b3fd6e751740d21a9f3f6862dadc4090beb1", kill_on_drop: false }`
[INFO] [stdout] 718079a308b7bcb2f00d66074837b3fd6e751740d21a9f3f6862dadc4090beb1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/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] 513e24bd516476ddea601e0e0910432fe26be8466d715f06e81cdbd40b64609d
[INFO] running `Command { std: "docker" "start" "-a" "513e24bd516476ddea601e0e0910432fe26be8466d715f06e81cdbd40b64609d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling syn v1.0.8
[INFO] [stderr]    Compiling unicode-width v0.1.6
[INFO] [stderr]    Compiling timely_bytes v0.11.0
[INFO] [stderr]    Compiling timely_logging v0.11.1
[INFO] [stderr]    Compiling abomonation v0.7.3
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling serde_derive v1.0.102
[INFO] [stderr]    Compiling abomonation_derive v0.5.0
[INFO] [stderr]    Compiling timely_communication v0.11.1
[INFO] [stderr]    Compiling timely v0.11.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 32.71s
[INFO] running `Command { std: "docker" "inspect" "513e24bd516476ddea601e0e0910432fe26be8466d715f06e81cdbd40b64609d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "513e24bd516476ddea601e0e0910432fe26be8466d715f06e81cdbd40b64609d", kill_on_drop: false }`
[INFO] [stdout] 513e24bd516476ddea601e0e0910432fe26be8466d715f06e81cdbd40b64609d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "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] 2c17448314251bdddccb9bf10e0bc423aabdc188ad2b10162268c2399307438c
[INFO] running `Command { std: "docker" "start" "-a" "2c17448314251bdddccb9bf10e0bc423aabdc188ad2b10162268c2399307438c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling timely_sort v0.1.6
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling timely v0.11.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value captured by `next_t` is never read
[INFO] [stdout]   --> examples/flow_controlled.rs:19:25
[INFO] [stdout]    |
[INFO] [stdout] 19 |                         next_t = first_x / 100 * 100;
[INFO] [stdout]    |                         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: did you mean to capture by reference instead?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `timely`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name rc --edition=2018 examples/rc.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type bin --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 -C metadata=bdf0b6c87c287086 -C extra-filename=-bdf0b6c87c287086 --out-dir /opt/rustwide/target/debug/examples -L dependency=/opt/rustwide/target/debug/deps --extern abomonation=/opt/rustwide/target/debug/deps/libabomonation-3caa8326b3677d56.rlib --extern abomonation_derive=/opt/rustwide/target/debug/deps/libabomonation_derive-42192c19e1165623.so --extern rand=/opt/rustwide/target/debug/deps/librand-d5cc10f96007a8c7.rlib --extern serde=/opt/rustwide/target/debug/deps/libserde-b661812a774a40fe.rlib --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-36945a541d734a7d.so --extern timely=/opt/rustwide/target/debug/deps/libtimely-bd40880aa089596e.rlib --extern timely_bytes=/opt/rustwide/target/debug/deps/libtimely_bytes-dd91825857bad58a.rlib --extern timely_communication=/opt/rustwide/target/debug/deps/libtimely_communication-ee530b435220a17a.rlib --extern timely_logging=/opt/rustwide/target/debug/deps/libtimely_logging-436cfe85378d47c9.rlib --extern timely_sort=/opt/rustwide/target/debug/deps/libtimely_sort-a1d107cd07a65d0e.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "2c17448314251bdddccb9bf10e0bc423aabdc188ad2b10162268c2399307438c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c17448314251bdddccb9bf10e0bc423aabdc188ad2b10162268c2399307438c", kill_on_drop: false }`
[INFO] [stdout] 2c17448314251bdddccb9bf10e0bc423aabdc188ad2b10162268c2399307438c