[INFO] fetching crate piet-common 0.2.0-pre6...
[INFO] checking piet-common-0.2.0-pre6 against master#31ee872db5aae4750e3da1ca4ed1523c4356947f for pr-78461
[INFO] extracting crate piet-common 0.2.0-pre6 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate piet-common 0.2.0-pre6 on toolchain 31ee872db5aae4750e3da1ca4ed1523c4356947f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate piet-common 0.2.0-pre6
[INFO] finished tweaking crates.io crate piet-common 0.2.0-pre6
[INFO] tweaked toml for crates.io crate piet-common 0.2.0-pre6 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate piet-common 0.2.0-pre6 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "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] 14930f11654f79e1d1b862caee705ffee4d3a5e55e1f841f1ec1b66a7f4350ed
[INFO] running `Command { std: "docker" "start" "-a" "14930f11654f79e1d1b862caee705ffee4d3a5e55e1f841f1ec1b66a7f4350ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "14930f11654f79e1d1b862caee705ffee4d3a5e55e1f841f1ec1b66a7f4350ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14930f11654f79e1d1b862caee705ffee4d3a5e55e1f841f1ec1b66a7f4350ed", kill_on_drop: false }`
[INFO] [stdout] 14930f11654f79e1d1b862caee705ffee4d3a5e55e1f841f1ec1b66a7f4350ed
[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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 984d7dc31330c58fe5714ee023d313778056e63155da5c5b07db43941ed611d6
[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" "984d7dc31330c58fe5714ee023d313778056e63155da5c5b07db43941ed611d6", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling strum v0.18.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling cairo-rs v0.9.1
[INFO] [stderr]     Checking arrayvec v0.5.1
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]    Compiling toml v0.5.7
[INFO] [stderr]     Checking kurbo v0.7.0
[INFO] [stderr]     Checking piet v0.2.0-pre6
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling syn v1.0.45
[INFO] [stderr]    Compiling thiserror-impl v1.0.21
[INFO] [stderr]    Compiling strum_macros v0.18.0
[INFO] [stderr]    Compiling thiserror v1.0.21
[INFO] [stderr]    Compiling system-deps v1.3.2
[INFO] [stderr]    Compiling cairo-sys-rs v0.10.0
[INFO] [stderr]     Checking piet-cairo v0.2.0-pre6
[INFO] [stderr]     Checking piet-common v0.2.0-pre6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.96s
[INFO] running `Command { std: "docker" "inspect" "984d7dc31330c58fe5714ee023d313778056e63155da5c5b07db43941ed611d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "984d7dc31330c58fe5714ee023d313778056e63155da5c5b07db43941ed611d6", kill_on_drop: false }`
[INFO] [stdout] 984d7dc31330c58fe5714ee023d313778056e63155da5c5b07db43941ed611d6