[INFO] fetching crate snarkos 1.2.0...
[INFO] checking snarkos-1.2.0 against master#f82664191d0e8764b7435b9d72eb0e366b8b1464 for pr-83354
[INFO] extracting crate snarkos 1.2.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate snarkos 1.2.0 on toolchain f82664191d0e8764b7435b9d72eb0e366b8b1464
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate snarkos 1.2.0
[INFO] finished tweaking crates.io crate snarkos 1.2.0
[INFO] tweaked toml for crates.io crate snarkos 1.2.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate snarkos 1.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a3d2c7258f9436117edd02fa5e7dbd1de43fc79212a3c2992d6844c488028fae
[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" "a3d2c7258f9436117edd02fa5e7dbd1de43fc79212a3c2992d6844c488028fae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a3d2c7258f9436117edd02fa5e7dbd1de43fc79212a3c2992d6844c488028fae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3d2c7258f9436117edd02fa5e7dbd1de43fc79212a3c2992d6844c488028fae", kill_on_drop: false }`
[INFO] [stdout] a3d2c7258f9436117edd02fa5e7dbd1de43fc79212a3c2992d6844c488028fae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 728c57e7329ed187d72c3a105c2854421251e2ab9a551c1e25eb21c51767f54f
[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" "728c57e7329ed187d72c3a105c2854421251e2ab9a551c1e25eb21c51767f54f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking futures-core v0.3.13
[INFO] [stderr]     Checking futures-sink v0.3.13
[INFO] [stderr]     Checking subtle v2.4.0
[INFO] [stderr]     Checking futures-task v0.3.13
[INFO] [stderr]     Checking futures-io v0.3.13
[INFO] [stderr]     Checking hex v0.4.2
[INFO] [stderr]    Compiling curl v0.4.34
[INFO] [stderr]     Checking once_cell v1.7.0
[INFO] [stderr]    Compiling anyhow v1.0.38
[INFO] [stderr]    Compiling serde_json v1.0.63
[INFO] [stderr]     Checking regex-syntax v0.6.22
[INFO] [stderr]     Checking tower-service v0.3.1
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.71
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]    Compiling protobuf v2.22.0
[INFO] [stderr]    Compiling prometheus v0.11.0
[INFO] [stderr]     Checking cpuid-bool v0.2.0
[INFO] [stderr]    Compiling wasm-bindgen v0.2.71
[INFO] [stderr]     Checking capnp v0.14.0
[INFO] [stderr]    Compiling fsio v0.1.3
[INFO] [stderr]    Compiling self_update v0.23.0
[INFO] [stderr]    Compiling nias v0.5.0
[INFO] [stderr]    Compiling indexmap v1.6.1
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking lock_api v0.4.2
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]    Compiling tokio v1.2.0
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]     Checking sharded-slab v0.1.1
[INFO] [stderr]     Checking input_buffer v0.4.0
[INFO] [stderr]     Checking http v0.2.3
[INFO] [stderr]     Checking itertools v0.10.0
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking futures-channel v0.3.13
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking miniz_oxide v0.3.7
[INFO] [stderr]     Checking crc32fast v1.2.1
[INFO] [stderr]     Checking encoding_rs v0.8.28
[INFO] [stderr]     Checking buf_redux v0.8.4
[INFO] [stderr]     Checking twoway v0.1.8
[INFO] [stderr]     Checking bstr v0.2.15
[INFO] [stderr]     Checking quick-xml v0.20.0
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking generic-array v0.14.4
[INFO] [stderr]     Checking tracing v0.1.25
[INFO] [stderr]     Checking tracing-log v0.1.2
[INFO] [stderr]    Compiling snow v0.7.2
[INFO] [stderr]    Compiling snarkos v1.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: couldn't read build.rs: No such file or directory (os error 2)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `snarkos`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "728c57e7329ed187d72c3a105c2854421251e2ab9a551c1e25eb21c51767f54f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "728c57e7329ed187d72c3a105c2854421251e2ab9a551c1e25eb21c51767f54f", kill_on_drop: false }`
[INFO] [stdout] 728c57e7329ed187d72c3a105c2854421251e2ab9a551c1e25eb21c51767f54f