[INFO] fetching crate provider 0.8.8...
[INFO] checking provider-0.8.8 against master#31ee872db5aae4750e3da1ca4ed1523c4356947f for pr-78461
[INFO] extracting crate provider 0.8.8 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate provider 0.8.8 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 provider 0.8.8
[INFO] finished tweaking crates.io crate provider 0.8.8
[INFO] tweaked toml for crates.io crate provider 0.8.8 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stdout] aaefa06d98eb03e52418f59c3deb0a43814fb1e7bb95af9772a6f8436c369770
[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" "aaefa06d98eb03e52418f59c3deb0a43814fb1e7bb95af9772a6f8436c369770", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aaefa06d98eb03e52418f59c3deb0a43814fb1e7bb95af9772a6f8436c369770", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aaefa06d98eb03e52418f59c3deb0a43814fb1e7bb95af9772a6f8436c369770", kill_on_drop: false }`
[INFO] [stdout] aaefa06d98eb03e52418f59c3deb0a43814fb1e7bb95af9772a6f8436c369770
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] fe90552a5885e3c7b3887bff0fb6050763386e7e452090461f28b85b7a342c1f
[INFO] running `Command { std: "docker" "start" "-a" "fe90552a5885e3c7b3887bff0fb6050763386e7e452090461f28b85b7a342c1f", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling const_fn v0.4.3
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking memory_units v0.3.0
[INFO] [stderr]    Compiling curl v0.4.34
[INFO] [stderr]     Checking openssl-probe v0.1.2
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking simpath v1.3.1
[INFO] [stderr]    Compiling standback v0.2.11
[INFO] [stderr]    Compiling time v0.2.22
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]    Compiling libz-sys v1.1.2
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]    Compiling curl-sys v0.4.38+curl-7.73.0
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking socket2 v0.3.15
[INFO] [stderr]     Checking multimap v0.5.0
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking flow_impl v0.8.5
[INFO] [stderr]     Checking url v2.1.1
[INFO] [stderr]     Checking parity-wasm v0.31.3
[INFO] [stderr]     Checking backtrace v0.3.54
[INFO] [stderr]     Checking wasmi-validation v0.1.0
[INFO] [stderr]     Checking wasmi v0.4.5
[INFO] [stderr]    Compiling time-macros-impl v0.1.1
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]     Checking time-macros v0.1.1
[INFO] [stderr]     Checking instant v0.1.8
[INFO] [stderr]     Checking flowrlib v0.8.8
[INFO] [stderr]     Checking provider v0.8.8 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 49.11s
[INFO] running `Command { std: "docker" "inspect" "fe90552a5885e3c7b3887bff0fb6050763386e7e452090461f28b85b7a342c1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe90552a5885e3c7b3887bff0fb6050763386e7e452090461f28b85b7a342c1f", kill_on_drop: false }`
[INFO] [stdout] fe90552a5885e3c7b3887bff0fb6050763386e7e452090461f28b85b7a342c1f