[INFO] fetching crate lamport_signature 0.1.4...
[INFO] checking lamport_signature-0.1.4 against try#894d32a5432c6a6461bb2aac7c3d5f2e87dce83f for pr-77015
[INFO] extracting crate lamport_signature 0.1.4 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate lamport_signature 0.1.4 on toolchain 894d32a5432c6a6461bb2aac7c3d5f2e87dce83f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lamport_signature 0.1.4
[INFO] finished tweaking crates.io crate lamport_signature 0.1.4
[INFO] tweaked toml for crates.io crate lamport_signature 0.1.4 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded whirlpool v0.7.1
[INFO] [stderr]   Downloaded blake2 v0.7.1
[INFO] [stderr]   Downloaded sha3 v0.7.3
[INFO] [stderr]   Downloaded block-buffer v0.2.0-tmp
[INFO] [stderr]   Downloaded groestl v0.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 93465065f67f588489fad27bb0fd51e2a0c5993bb9328ae9c68c8d8fea774b59
[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" "93465065f67f588489fad27bb0fd51e2a0c5993bb9328ae9c68c8d8fea774b59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "93465065f67f588489fad27bb0fd51e2a0c5993bb9328ae9c68c8d8fea774b59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93465065f67f588489fad27bb0fd51e2a0c5993bb9328ae9c68c8d8fea774b59", kill_on_drop: false }`
[INFO] [stdout] 93465065f67f588489fad27bb0fd51e2a0c5993bb9328ae9c68c8d8fea774b59
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 46f0a876b67c291537c5c7ddcf6f09d4441893b86fa44a624f31f5abdd3dd84f
[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" "46f0a876b67c291537c5c7ddcf6f09d4441893b86fa44a624f31f5abdd3dd84f", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking keccak v0.1.0
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking block-buffer v0.3.3
[INFO] [stderr]     Checking generic-array v0.9.0
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking digest v0.7.6
[INFO] [stderr]     Checking block-buffer v0.2.0-tmp
[INFO] [stderr]     Checking crypto-mac v0.5.2
[INFO] [stderr]     Checking whirlpool v0.7.1
[INFO] [stderr]     Checking sha2 v0.7.1
[INFO] [stderr]     Checking sha3 v0.7.3
[INFO] [stderr]     Checking blake2 v0.7.1
[INFO] [stderr]     Checking groestl v0.7.0
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stderr]     Checking lamport_signature v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `iterator_flatten` has been stable since 1.29.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:21:18
[INFO] [stdout]    |
[INFO] [stdout] 21 | #![feature(test, iterator_flatten)]
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `iterator_flatten` has been stable since 1.29.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:21:18
[INFO] [stdout]    |
[INFO] [stdout] 21 | #![feature(test, iterator_flatten)]
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.26s
[INFO] running `Command { std: "docker" "inspect" "46f0a876b67c291537c5c7ddcf6f09d4441893b86fa44a624f31f5abdd3dd84f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46f0a876b67c291537c5c7ddcf6f09d4441893b86fa44a624f31f5abdd3dd84f", kill_on_drop: false }`
[INFO] [stdout] 46f0a876b67c291537c5c7ddcf6f09d4441893b86fa44a624f31f5abdd3dd84f