[INFO] fetching crate p256-cortex-m4 0.1.0-alpha.4...
[INFO] checking p256-cortex-m4-0.1.0-alpha.4 against try#7b3565da729099dbe807466fcd118fb2815986e0 for pr-81789
[INFO] extracting crate p256-cortex-m4 0.1.0-alpha.4 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate p256-cortex-m4 0.1.0-alpha.4 on toolchain 7b3565da729099dbe807466fcd118fb2815986e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-12/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-12/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate p256-cortex-m4 0.1.0-alpha.4
[INFO] finished tweaking crates.io crate p256-cortex-m4 0.1.0-alpha.4
[INFO] tweaked toml for crates.io crate p256-cortex-m4 0.1.0-alpha.4 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded p256 v0.7.3
[INFO] [stderr]   Downloaded der_derive v0.2.2
[INFO] [stderr]   Downloaded p256-cortex-m4-sys v0.1.0-alpha.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a1812bcffce5219169cce547009c7a9d69bda9bfcd8d890e3459299c1dddabf3
[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" "a1812bcffce5219169cce547009c7a9d69bda9bfcd8d890e3459299c1dddabf3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a1812bcffce5219169cce547009c7a9d69bda9bfcd8d890e3459299c1dddabf3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1812bcffce5219169cce547009c7a9d69bda9bfcd8d890e3459299c1dddabf3", kill_on_drop: false }`
[INFO] [stdout] a1812bcffce5219169cce547009c7a9d69bda9bfcd8d890e3459299c1dddabf3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bc08fda5a8cb951d37a663a9b2792d54c68901be1d93038d7b9592e1a05d83d7
[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" "bc08fda5a8cb951d37a663a9b2792d54c68901be1d93038d7b9592e1a05d83d7", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling typenum v1.13.0
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]     Checking subtle v2.4.0
[INFO] [stderr]     Checking funty v1.1.0
[INFO] [stderr]    Compiling regex-syntax v0.6.23
[INFO] [stderr]    Compiling bindgen v0.57.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling cc v1.0.67
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling p256-cortex-m4 v0.1.0-alpha.4 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling clang-sys v1.2.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]     Checking bitvec v0.18.5
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling syn v1.0.70
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking crypto-mac v0.10.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking hmac v0.10.1
[INFO] [stderr]     Checking signature v1.2.2
[INFO] [stderr]     Checking sha2 v0.9.3
[INFO] [stderr]     Checking ff v0.8.0
[INFO] [stderr]    Compiling regex v1.4.5
[INFO] [stderr]     Checking group v0.8.0
[INFO] [stderr]    Compiling cexpr v0.4.0
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling zeroize_derive v1.1.0
[INFO] [stderr]     Checking zeroize v1.3.0
[INFO] [stderr]     Checking elliptic-curve v0.8.5
[INFO] [stderr]     Checking ecdsa v0.10.2
[INFO] [stderr]     Checking p256 v0.7.3
[INFO] [stderr]    Compiling p256-cortex-m4-sys v0.1.0-alpha.2
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 40.56s
[INFO] running `Command { std: "docker" "inspect" "bc08fda5a8cb951d37a663a9b2792d54c68901be1d93038d7b9592e1a05d83d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc08fda5a8cb951d37a663a9b2792d54c68901be1d93038d7b9592e1a05d83d7", kill_on_drop: false }`
[INFO] [stdout] bc08fda5a8cb951d37a663a9b2792d54c68901be1d93038d7b9592e1a05d83d7