[INFO] fetching crate dynstack 0.4.0...
[INFO] checking dynstack-0.4.0 against master#4fa76a4a7742bb9c1febe33019f5a9e7e4839a65 for pr-83744
[INFO] extracting crate dynstack 0.4.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate dynstack 0.4.0 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 dynstack 0.4.0
[INFO] finished tweaking crates.io crate dynstack 0.4.0
[INFO] tweaked toml for crates.io crate dynstack 0.4.0 written to /workspace/builds/worker-4/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/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stdout] 9fe0ce9ae022ff3e3032430107fc1295657d04ac6b01d8dddf857d4a9ab009a9
[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" "9fe0ce9ae022ff3e3032430107fc1295657d04ac6b01d8dddf857d4a9ab009a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9fe0ce9ae022ff3e3032430107fc1295657d04ac6b01d8dddf857d4a9ab009a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9fe0ce9ae022ff3e3032430107fc1295657d04ac6b01d8dddf857d4a9ab009a9", kill_on_drop: false }`
[INFO] [stdout] 9fe0ce9ae022ff3e3032430107fc1295657d04ac6b01d8dddf857d4a9ab009a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2766cd9c59f381cf8c57a9f7bc90d5c37ce94ee7cd354498fcb6464fa9c1c569
[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" "2766cd9c59f381cf8c57a9f7bc90d5c37ce94ee7cd354498fcb6464fa9c1c569", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking cast v0.1.0
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking term v0.4.6
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling dynstack v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking thread-scoped v1.0.2
[INFO] [stderr]     Checking itertools v0.4.19
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]     Checking addr2line v0.14.1
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking itertools v0.5.10
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking criterion-plot v0.1.3
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking num_cpus v0.2.13
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking isatty v0.1.9
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking simplelog v0.4.4
[INFO] [stderr]     Checking backtrace v0.3.56
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking criterion-stats v0.1.3
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking criterion v0.1.2
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/lib.rs:484:6
[INFO] [stdout]     |
[INFO] [stdout] 484 |     };
[INFO] [stdout]     |      ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` 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 41.66s
[INFO] running `Command { std: "docker" "inspect" "2766cd9c59f381cf8c57a9f7bc90d5c37ce94ee7cd354498fcb6464fa9c1c569", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2766cd9c59f381cf8c57a9f7bc90d5c37ce94ee7cd354498fcb6464fa9c1c569", kill_on_drop: false }`
[INFO] [stdout] 2766cd9c59f381cf8c57a9f7bc90d5c37ce94ee7cd354498fcb6464fa9c1c569