[INFO] fetching crate casper-contract 1.0.0...
[INFO] checking casper-contract-1.0.0 against master#4fa76a4a7742bb9c1febe33019f5a9e7e4839a65 for pr-83744
[INFO] extracting crate casper-contract 1.0.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate casper-contract 1.0.0 on toolchain 4fa76a4a7742bb9c1febe33019f5a9e7e4839a65
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate casper-contract 1.0.0
[INFO] finished tweaking crates.io crate casper-contract 1.0.0
[INFO] tweaked toml for crates.io crate casper-contract 1.0.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/jobserver:/tmp/crater-runner-fifo:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "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] d4935ebdee60803c0c3060711d9afe2dffd6620537ed050574d09cb01f620026
[INFO] running `Command { std: "docker" "start" "-a" "d4935ebdee60803c0c3060711d9afe2dffd6620537ed050574d09cb01f620026", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d4935ebdee60803c0c3060711d9afe2dffd6620537ed050574d09cb01f620026", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4935ebdee60803c0c3060711d9afe2dffd6620537ed050574d09cb01f620026", kill_on_drop: false }`
[INFO] [stdout] d4935ebdee60803c0c3060711d9afe2dffd6620537ed050574d09cb01f620026
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/jobserver:/tmp/crater-runner-fifo:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "RUSTUP_TOOLCHAIN=4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "-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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/tmp/crater-runner-fifo/jobserver-crater-fwd" "/opt/rustwide/cargo-home/bin/cargo" "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] 3a2913516ec26982412d82e929ff9d131e1762ddcc96178f0e8cdb65ad1b8887
[INFO] running `Command { std: "docker" "start" "-a" "3a2913516ec26982412d82e929ff9d131e1762ddcc96178f0e8cdb65ad1b8887", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]    Compiling wee_alloc v0.4.5
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking memory_units v0.4.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking ff v0.8.0
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking group v0.8.0
[INFO] [stderr]     Checking uint v0.8.5
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]     Checking num-integer v0.1.44
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling datasize_derive v0.2.9
[INFO] [stderr]    Compiling num-derive v0.3.3
[INFO] [stderr]    Compiling displaydoc v0.1.7
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]     Checking signature v1.2.2
[INFO] [stderr]     Checking num-rational v0.3.2
[INFO] [stderr]    Compiling zeroize_derive v1.0.1
[INFO] [stderr]     Checking datasize v0.2.9
[INFO] [stderr]     Checking thiserror v1.0.24
[INFO] [stderr]     Checking ed25519 v1.0.3
[INFO] [stderr]     Checking zeroize v1.2.0
[INFO] [stderr]     Checking elliptic-curve v0.8.5
[INFO] [stderr]     Checking curve25519-dalek v3.1.0
[INFO] [stderr]     Checking ecdsa v0.10.2
[INFO] [stderr]     Checking ed25519-dalek v1.0.1
[INFO] [stderr]     Checking k256 v0.7.3
[INFO] [stderr]     Checking casper-types v1.0.1
[INFO] [stderr]     Checking casper-contract v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 27s
[INFO] running `Command { std: "docker" "inspect" "3a2913516ec26982412d82e929ff9d131e1762ddcc96178f0e8cdb65ad1b8887", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a2913516ec26982412d82e929ff9d131e1762ddcc96178f0e8cdb65ad1b8887", kill_on_drop: false }`
[INFO] [stdout] 3a2913516ec26982412d82e929ff9d131e1762ddcc96178f0e8cdb65ad1b8887