[INFO] fetching crate flowr 0.34.3...
[INFO] checking flowr-0.34.3 against master#4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5 for pr-81174
[INFO] extracting crate flowr 0.34.3 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate flowr 0.34.3 on toolchain 4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate flowr 0.34.3
[INFO] finished tweaking crates.io crate flowr 0.34.3
[INFO] tweaked toml for crates.io crate flowr 0.34.3 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate crates.io crate flowr 0.34.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1628d9708683de57b5412f7c8a5cea0b58475e8d405a8b970bdc88241a6aa7cc
[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" "1628d9708683de57b5412f7c8a5cea0b58475e8d405a8b970bdc88241a6aa7cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1628d9708683de57b5412f7c8a5cea0b58475e8d405a8b970bdc88241a6aa7cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1628d9708683de57b5412f7c8a5cea0b58475e8d405a8b970bdc88241a6aa7cc", kill_on_drop: false }`
[INFO] [stdout] 1628d9708683de57b5412f7c8a5cea0b58475e8d405a8b970bdc88241a6aa7cc
[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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3bf879aa54495195777735391f1fe255ac3154a22310586f14df7a5c3d338aaa
[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" "3bf879aa54495195777735391f1fe255ac3154a22310586f14df7a5c3d338aaa", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling syn v1.0.58
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling object v0.22.0
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling percent-encoding v2.1.0
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]    Compiling error-chain v0.10.0
[INFO] [stderr]    Compiling toml v0.2.1
[INFO] [stderr]     Checking byteorder v1.4.2
[INFO] [stderr]    Compiling simpath v1.4.1
[INFO] [stderr]    Compiling dtoa v0.4.7
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling glob v0.2.11
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]     Checking weezl v0.1.3
[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 num-traits v0.2.14
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling tinyvec v1.1.0
[INFO] [stderr]     Checking miniz_oxide v0.3.7
[INFO] [stderr]     Checking deflate v0.8.6
[INFO] [stderr]    Compiling metadeps v1.1.2
[INFO] [stderr]     Checking gif v0.11.1
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]     Checking simplog v1.2.2
[INFO] [stderr]     Checking tiff v0.5.0
[INFO] [stderr]     Checking png v0.16.8
[INFO] [stderr]     Checking unicode-normalization v0.1.16
[INFO] [stderr]     Checking crossbeam-epoch v0.9.1
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]    Compiling zmq-sys v0.11.0
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking wasmi-validation v0.3.0
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking openssl-sys v0.9.60
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking libz-sys v1.1.2
[INFO] [stderr]     Checking backtrace v0.3.55
[INFO] [stderr]     Checking socket2 v0.3.19
[INFO] [stderr]     Checking nix v0.18.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking rayon-core v1.9.0
[INFO] [stderr]     Checking url v2.1.1
[INFO] [stderr]     Checking error-chain v0.12.4
[INFO] [stderr]     Checking curl-sys v0.4.39+curl-7.74.0
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking curl v0.4.34
[INFO] [stderr]     Checking wasmi v0.6.2
[INFO] [stderr]     Checking provider v0.25.0
[INFO] [stderr]     Checking serde_json v1.0.61
[INFO] [stderr]     Checking multimap v0.8.2
[INFO] [stderr]    Compiling serde_yaml v0.8.15
[INFO] [stderr]    Compiling toml v0.4.10
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling shrinkwraprs v0.2.3
[INFO] [stderr]    Compiling flow_impl_derive v0.21.0
[INFO] [stderr]     Checking flow_impl v0.21.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.20
[INFO] [stderr]     Checking ctrlc v3.1.7
[INFO] [stderr]     Checking image v0.23.10
[INFO] [stderr]    Compiling flowrstructs v0.33.0
[INFO] [stderr]    Compiling flowc v0.34.0
[INFO] [stderr]    Compiling flowstdlib v0.34.3
[INFO] [stderr]     Checking flowr v0.34.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 24s
[INFO] running `Command { std: "docker" "inspect" "3bf879aa54495195777735391f1fe255ac3154a22310586f14df7a5c3d338aaa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3bf879aa54495195777735391f1fe255ac3154a22310586f14df7a5c3d338aaa", kill_on_drop: false }`
[INFO] [stdout] 3bf879aa54495195777735391f1fe255ac3154a22310586f14df7a5c3d338aaa