[INFO] fetching crate hex-buffer-serde 0.2.1...
[INFO] checking hex-buffer-serde-0.2.1 against try#075992eda207e1647b699c8c8ada67b32ce7b115 for pr-77271
[INFO] extracting crate hex-buffer-serde 0.2.1 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate hex-buffer-serde 0.2.1 on toolchain 075992eda207e1647b699c8c8ada67b32ce7b115
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+075992eda207e1647b699c8c8ada67b32ce7b115" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate hex-buffer-serde 0.2.1
[INFO] finished tweaking crates.io crate hex-buffer-serde 0.2.1
[INFO] tweaked toml for crates.io crate hex-buffer-serde 0.2.1 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate crates.io crate hex-buffer-serde 0.2.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+075992eda207e1647b699c8c8ada67b32ce7b115" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+075992eda207e1647b699c8c8ada67b32ce7b115" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ac5f7fc4b277e09544d64a24e7a6f7c35ead0f036f99ff272ba95ff6ebe188c5
[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" "ac5f7fc4b277e09544d64a24e7a6f7c35ead0f036f99ff272ba95ff6ebe188c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ac5f7fc4b277e09544d64a24e7a6f7c35ead0f036f99ff272ba95ff6ebe188c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac5f7fc4b277e09544d64a24e7a6f7c35ead0f036f99ff272ba95ff6ebe188c5", kill_on_drop: false }`
[INFO] [stdout] ac5f7fc4b277e09544d64a24e7a6f7c35ead0f036f99ff272ba95ff6ebe188c5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+075992eda207e1647b699c8c8ada67b32ce7b115" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 38daac984d24d6e2fdd28f86e6b3e212d9b48fa2e01e5a2cfff00dc27c9b367f
[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" "38daac984d24d6e2fdd28f86e6b3e212d9b48fa2e01e5a2cfff00dc27c9b367f", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling proc-macro2 v1.0.9
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]     Checking subtle v2.2.2
[INFO] [stderr]     Checking zeroize v1.1.0
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking half v1.5.0
[INFO] [stderr]     Checking hex v0.4.2
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling clear_on_drop v0.2.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking curve25519-dalek v2.0.0
[INFO] [stderr]     Checking sha2 v0.8.1
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]     Checking bincode v1.2.1
[INFO] [stderr]     Checking ed25519-dalek v1.0.0-pre.3
[INFO] [stderr]     Checking serde_json v1.0.48
[INFO] [stderr]     Checking serde_cbor v0.11.1
[INFO] [stderr]     Checking hex-buffer-serde v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.59s
[INFO] running `Command { std: "docker" "inspect" "38daac984d24d6e2fdd28f86e6b3e212d9b48fa2e01e5a2cfff00dc27c9b367f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38daac984d24d6e2fdd28f86e6b3e212d9b48fa2e01e5a2cfff00dc27c9b367f", kill_on_drop: false }`
[INFO] [stdout] 38daac984d24d6e2fdd28f86e6b3e212d9b48fa2e01e5a2cfff00dc27c9b367f