[INFO] fetching crate gapbuf 0.1.3...
[INFO] checking gapbuf-0.1.3 against try#b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b for pr-82781
[INFO] extracting crate gapbuf 0.1.3 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate gapbuf 0.1.3 on toolchain b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate gapbuf 0.1.3
[INFO] finished tweaking crates.io crate gapbuf 0.1.3
[INFO] tweaked toml for crates.io crate gapbuf 0.1.3 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate gapbuf 0.1.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rusty-fork v0.3.0
[INFO] [stderr]   Downloaded ucd-util v0.1.3
[INFO] [stderr]   Downloaded lazy_static v1.3.0
[INFO] [stderr]   Downloaded remove_dir_all v0.5.1
[INFO] [stderr]   Downloaded tempfile v3.0.8
[INFO] [stderr]   Downloaded proptest v0.10.1
[INFO] [stderr]   Downloaded rand_xorshift v0.2.0
[INFO] [stderr]   Downloaded regex-syntax v0.6.7
[INFO] [stderr]   Downloaded autocfg v0.1.4
[INFO] [stderr]   Downloaded rand_core v0.4.0
[INFO] [stderr]   Downloaded winapi v0.3.7
[INFO] [stderr]   Downloaded test-strategy v0.1.0
[INFO] [stderr]   Downloaded redox_syscall v0.1.54
[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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0e3888569ea79aa787d0d904250e020f5ec762b92682bf0d643f1e799ee9107c
[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" "0e3888569ea79aa787d0d904250e020f5ec762b92682bf0d643f1e799ee9107c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0e3888569ea79aa787d0d904250e020f5ec762b92682bf0d643f1e799ee9107c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e3888569ea79aa787d0d904250e020f5ec762b92682bf0d643f1e799ee9107c", kill_on_drop: false }`
[INFO] [stdout] 0e3888569ea79aa787d0d904250e020f5ec762b92682bf0d643f1e799ee9107c
[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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9ebb381aa332ec2489a64017b850aa12804c84cb8934a9bc03a5f6cf68cc7082
[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" "9ebb381aa332ec2489a64017b850aa12804c84cb8934a9bc03a5f6cf68cc7082", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.4
[INFO] [stderr]     Checking rand_core v0.4.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking remove_dir_all v0.5.1
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking quick-error v1.2.2
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking gapbuf v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking regex-syntax v0.6.7
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.2.0
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking tempfile v3.0.8
[INFO] [stderr]     Checking rusty-fork v0.3.0
[INFO] [stderr]     Checking proptest v0.10.1
[INFO] [stderr]    Compiling test-strategy v0.1.0
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.24s
[INFO] running `Command { std: "docker" "inspect" "9ebb381aa332ec2489a64017b850aa12804c84cb8934a9bc03a5f6cf68cc7082", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ebb381aa332ec2489a64017b850aa12804c84cb8934a9bc03a5f6cf68cc7082", kill_on_drop: false }`
[INFO] [stdout] 9ebb381aa332ec2489a64017b850aa12804c84cb8934a9bc03a5f6cf68cc7082