[INFO] fetching crate helion 0.5.0...
[INFO] checking helion-0.5.0 against try#6024cfef3a82f9a7688f07054f1650081bad3af5 for pr-74130
[INFO] extracting crate helion 0.5.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate helion 0.5.0 on toolchain 6024cfef3a82f9a7688f07054f1650081bad3af5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate helion 0.5.0
[INFO] finished tweaking crates.io crate helion 0.5.0
[INFO] tweaked toml for crates.io crate helion 0.5.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate helion 0.5.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded termios v0.2.2
[INFO] [stderr]   Downloaded serial v0.3.4
[INFO] [stderr]   Downloaded dtoa v0.4.1
[INFO] [stderr]   Downloaded serde v1.0.8
[INFO] [stderr]   Downloaded libc v0.2.23
[INFO] [stderr]   Downloaded serde_json v1.0.2
[INFO] [stderr]   Downloaded serde_derive v1.0.8
[INFO] [stderr]   Downloaded itoa v0.3.1
[INFO] [stderr]   Downloaded rustc-demangle v0.1.4
[INFO] [stderr]   Downloaded x11cap v0.4.1
[INFO] [stderr]   Downloaded cfg-if v0.1.1
[INFO] [stderr]   Downloaded clock_ticks v0.1.0
[INFO] [stderr]   Downloaded lazy_static v0.2.8
[INFO] [stderr]   Downloaded num-traits v0.1.39
[INFO] [stderr]   Downloaded gcc v0.3.50
[INFO] [stderr]   Downloaded dxgcap v0.2.1
[INFO] [stderr]   Downloaded ioctl-rs v0.1.5
[INFO] [stderr]   Downloaded captrs v0.3.0
[INFO] [stderr]   Downloaded backtrace-sys v0.1.11
[INFO] [stderr]   Downloaded x11 v2.14.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "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] 091aeed201d7b11e816b6574ee881308b7d30db53a849521090b989f5705a842
[INFO] running `Command { std: "docker" "start" "-a" "091aeed201d7b11e816b6574ee881308b7d30db53a849521090b989f5705a842", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "091aeed201d7b11e816b6574ee881308b7d30db53a849521090b989f5705a842", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "091aeed201d7b11e816b6574ee881308b7d30db53a849521090b989f5705a842", kill_on_drop: false }`
[INFO] [stdout] 091aeed201d7b11e816b6574ee881308b7d30db53a849521090b989f5705a842
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=forbid" "-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@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dd7a5c4fce9160b291549febbed1d8946d44edef60494fa1573f0372cf52963e
[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" "dd7a5c4fce9160b291549febbed1d8946d44edef60494fa1573f0372cf52963e", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.23
[INFO] [stderr]    Compiling error-chain v0.10.0
[INFO] [stderr]    Compiling pkg-config v0.3.9
[INFO] [stderr]    Compiling toml v0.2.1
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling x11cap v0.4.1
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking itoa v0.3.1
[INFO] [stderr]    Compiling helion v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking serde v1.0.8
[INFO] [stderr]     Checking num-traits v0.1.39
[INFO] [stderr]     Checking dtoa v0.4.1
[INFO] [stderr]     Checking clock_ticks v0.1.0
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking termios v0.2.2
[INFO] [stderr]     Checking ioctl-rs v0.1.5
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking serial v0.3.4
[INFO] [stderr]    Compiling metadeps v1.1.2
[INFO] [stderr]    Compiling x11 v2.14.0
[INFO] [stderr]    Compiling serde_derive_internals v0.15.1
[INFO] [stderr]    Compiling serde_derive v1.0.8
[INFO] [stderr]     Checking captrs v0.3.0
[INFO] [stderr]     Checking serde_json v1.0.2
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.77s
[INFO] running `Command { std: "docker" "inspect" "dd7a5c4fce9160b291549febbed1d8946d44edef60494fa1573f0372cf52963e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd7a5c4fce9160b291549febbed1d8946d44edef60494fa1573f0372cf52963e", kill_on_drop: false }`
[INFO] [stdout] dd7a5c4fce9160b291549febbed1d8946d44edef60494fa1573f0372cf52963e