[INFO] fetching crate embedded-nal-minimal-coaptcpserver 0.2.0...
[INFO] checking embedded-nal-minimal-coaptcpserver-0.2.0 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate embedded-nal-minimal-coaptcpserver 0.2.0 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate embedded-nal-minimal-coaptcpserver 0.2.0 on toolchain c387b04bf028733cd561d62128c8a5eee4bc1458
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate embedded-nal-minimal-coaptcpserver 0.2.0
[INFO] finished tweaking crates.io crate embedded-nal-minimal-coaptcpserver 0.2.0
[INFO] tweaked toml for crates.io crate embedded-nal-minimal-coaptcpserver 0.2.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 28 packages to latest compatible versions
[INFO] [stderr]       Adding coap-numbers v0.1.2 (available: v0.2.4)
[INFO] [stderr]       Adding embedded-nal v0.6.0 (available: v0.9.0)
[INFO] [stderr]       Adding hash32 v0.2.1 (available: v0.3.1)
[INFO] [stderr]       Adding heapless v0.7.17 (available: v0.8.0)
[INFO] [stderr]       Adding minicbor v0.19.1 (available: v0.25.1)
[INFO] [stderr]       Adding no-std-net v0.5.0 (available: v0.6.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e24f002d66bd4d30fe4765dbb62e798d8b52f1fa3960b5268d5cf0908b618eed
[INFO] running `Command { std: "docker" "start" "-a" "e24f002d66bd4d30fe4765dbb62e798d8b52f1fa3960b5268d5cf0908b618eed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e24f002d66bd4d30fe4765dbb62e798d8b52f1fa3960b5268d5cf0908b618eed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e24f002d66bd4d30fe4765dbb62e798d8b52f1fa3960b5268d5cf0908b618eed", kill_on_drop: false }`
[INFO] [stdout] e24f002d66bd4d30fe4765dbb62e798d8b52f1fa3960b5268d5cf0908b618eed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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 -Dtail_expr_drop_order" "-e" "RUSTDOCFLAGS=--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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 30de9e92d93a71863b42d1042c44b5b26c9fe02ea01e1a18d560ee42544b4e8b
[INFO] running `Command { std: "docker" "start" "-a" "30de9e92d93a71863b42d1042c44b5b26c9fe02ea01e1a18d560ee42544b4e8b", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v1.0.23
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling minicbor v0.19.1
[INFO] [stderr]    Compiling litrs v0.4.1
[INFO] [stderr]     Checking hash32 v0.2.1
[INFO] [stderr]     Checking coap-numbers v0.2.4
[INFO] [stderr]     Checking coap-message v0.3.4
[INFO] [stderr]    Compiling heapless v0.8.0
[INFO] [stderr]     Checking hash32 v0.3.1
[INFO] [stderr]     Checking no-std-net v0.5.0
[INFO] [stderr]     Checking coap-handler v0.2.0
[INFO] [stderr]     Checking coap-numbers v0.1.2
[INFO] [stderr]    Compiling document-features v0.2.10
[INFO] [stderr]    Compiling rustc_version v0.4.1
[INFO] [stderr]    Compiling heapless v0.7.17
[INFO] [stderr]     Checking coap-message-utils v0.3.6
[INFO] [stderr]     Checking coap-message-implementations v0.1.5
[INFO] [stderr]     Checking embedded-nal v0.6.0
[INFO] [stderr]     Checking embedded-nal-tcpextensions v0.1.2
[INFO] [stderr]     Checking embedded-nal-minimal-coaptcpserver v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.27s
[INFO] running `Command { std: "docker" "inspect" "30de9e92d93a71863b42d1042c44b5b26c9fe02ea01e1a18d560ee42544b4e8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30de9e92d93a71863b42d1042c44b5b26c9fe02ea01e1a18d560ee42544b4e8b", kill_on_drop: false }`
[INFO] [stdout] 30de9e92d93a71863b42d1042c44b5b26c9fe02ea01e1a18d560ee42544b4e8b