[INFO] fetching crate flowr 0.31.0...
[INFO] checking flowr-0.31.0 against try#6f12b8fe67b4eed2e838dab803ed9493b9d62c0f for pr-79073
[INFO] extracting crate flowr 0.31.0 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate flowr 0.31.0 on toolchain 6f12b8fe67b4eed2e838dab803ed9493b9d62c0f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate flowr 0.31.0
[INFO] finished tweaking crates.io crate flowr 0.31.0
[INFO] tweaked toml for crates.io crate flowr 0.31.0 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate crates.io crate flowr 0.31.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded flowstdlib v0.31.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0ced2ddeae7358099d878c5afd98656b3ef79163690c972873b4590868833cc5
[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" "0ced2ddeae7358099d878c5afd98656b3ef79163690c972873b4590868833cc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0ced2ddeae7358099d878c5afd98656b3ef79163690c972873b4590868833cc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ced2ddeae7358099d878c5afd98656b3ef79163690c972873b4590868833cc5", kill_on_drop: false }`
[INFO] [stdout] 0ced2ddeae7358099d878c5afd98656b3ef79163690c972873b4590868833cc5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b35c1ef749178337b815c6ff3da4307fcc7c2b8bda81e3c891ee3369facb98b4
[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" "b35c1ef749178337b815c6ff3da4307fcc7c2b8bda81e3c891ee3369facb98b4", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.62
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]    Compiling curl v0.4.34
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]    Compiling tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling matches v0.1.8
[INFO] [stderr]    Compiling percent-encoding v2.1.0
[INFO] [stderr]     Checking gimli v0.23.0
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]    Compiling linked-hash-map v0.5.3
[INFO] [stderr]    Compiling simpath v1.4.1
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling dtoa v0.4.6
[INFO] [stderr]     Checking object v0.22.0
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]     Checking rustc-demangle v0.1.18
[INFO] [stderr]     Checking weezl v0.1.3
[INFO] [stderr]     Checking bytemuck v1.4.1
[INFO] [stderr]    Compiling zmq v0.9.2
[INFO] [stderr]     Checking parity-wasm v0.41.0
[INFO] [stderr]     Checking memory_units v0.3.0
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]     Checking miniz_oxide v0.3.7
[INFO] [stderr]    Compiling metadeps v1.1.2
[INFO] [stderr]    Compiling tinyvec v1.0.1
[INFO] [stderr]    Compiling unicode-bidi v0.3.4
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling yaml-rust v0.4.4
[INFO] [stderr]     Checking gif v0.11.1
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking crc32fast v1.2.1
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking socket2 v0.3.16
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking nix v0.18.0
[INFO] [stderr]     Checking simplog v1.2.2
[INFO] [stderr]     Checking deflate v0.8.6
[INFO] [stderr]    Compiling zmq-sys v0.11.0
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking tiff v0.5.0
[INFO] [stderr]    Compiling unicode-normalization v0.1.14
[INFO] [stderr]     Checking wasmi-validation v0.3.0
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking png v0.16.7
[INFO] [stderr]    Compiling openssl-sys v0.9.58
[INFO] [stderr]    Compiling libz-sys v1.1.2
[INFO] [stderr]    Compiling curl-sys v0.4.38+curl-7.73.0
[INFO] [stderr]     Checking rayon-core v1.9.0
[INFO] [stderr]    Compiling backtrace v0.3.54
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling idna v0.2.0
[INFO] [stderr]     Checking addr2line v0.14.0
[INFO] [stderr]     Checking rayon v1.5.0
[INFO] [stderr]    Compiling url v2.1.1
[INFO] [stderr]     Checking wasmi v0.6.2
[INFO] [stderr]     Checking serde_json v1.0.59
[INFO] [stderr]     Checking multimap v0.8.2
[INFO] [stderr]     Checking ctrlc v3.1.7
[INFO] [stderr]    Compiling serde_yaml v0.8.14
[INFO] [stderr]    Compiling toml v0.4.10
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]    Compiling shrinkwraprs v0.2.3
[INFO] [stderr]    Compiling flow_impl_derive v0.21.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.20
[INFO] [stderr]     Checking flow_impl v0.21.0
[INFO] [stderr]     Checking image v0.23.10
[INFO] [stderr]     Checking provider v0.25.0
[INFO] [stderr]     Checking flowrstructs v0.25.0
[INFO] [stderr]    Compiling flowc v0.31.0
[INFO] [stderr]    Compiling flowstdlib v0.31.0
[INFO] [stderr]     Checking flowr v0.31.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 45s
[INFO] running `Command { std: "docker" "inspect" "b35c1ef749178337b815c6ff3da4307fcc7c2b8bda81e3c891ee3369facb98b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b35c1ef749178337b815c6ff3da4307fcc7c2b8bda81e3c891ee3369facb98b4", kill_on_drop: false }`
[INFO] [stdout] b35c1ef749178337b815c6ff3da4307fcc7c2b8bda81e3c891ee3369facb98b4