[INFO] fetching crate stava 0.6.2...
[INFO] checking stava-0.6.2 against master#6526e5c772f2da07db745c94ca6bb0a591a39ba4 for pr-80920
[INFO] extracting crate stava 0.6.2 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate stava 0.6.2 on toolchain 6526e5c772f2da07db745c94ca6bb0a591a39ba4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate stava 0.6.2
[INFO] finished tweaking crates.io crate stava 0.6.2
[INFO] tweaked toml for crates.io crate stava 0.6.2 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate stava 0.6.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8d13f5d83baaf2b91cd230e4ee75c1ca295b10ba0687295f18e24a55dd127f36
[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" "8d13f5d83baaf2b91cd230e4ee75c1ca295b10ba0687295f18e24a55dd127f36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8d13f5d83baaf2b91cd230e4ee75c1ca295b10ba0687295f18e24a55dd127f36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d13f5d83baaf2b91cd230e4ee75c1ca295b10ba0687295f18e24a55dd127f36", kill_on_drop: false }`
[INFO] [stdout] 8d13f5d83baaf2b91cd230e4ee75c1ca295b10ba0687295f18e24a55dd127f36
[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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ca9731d996cb5e49698afa9c81eb05617d8130407e0b2ef6c4bf4f845c8cb796
[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" "ca9731d996cb5e49698afa9c81eb05617d8130407e0b2ef6c4bf4f845c8cb796", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking regex-syntax v0.6.21
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling anyhow v1.0.34
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking float-cmp v0.8.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking predicates v1.0.5
[INFO] [stderr]     Checking assert_cmd v1.0.1
[INFO] [stderr]    Compiling include_dir_impl v0.6.0
[INFO] [stderr]     Checking include_dir v0.6.0
[INFO] [stderr]     Checking stava v0.6.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.38s
[INFO] running `Command { std: "docker" "inspect" "ca9731d996cb5e49698afa9c81eb05617d8130407e0b2ef6c4bf4f845c8cb796", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca9731d996cb5e49698afa9c81eb05617d8130407e0b2ef6c4bf4f845c8cb796", kill_on_drop: false }`
[INFO] [stdout] ca9731d996cb5e49698afa9c81eb05617d8130407e0b2ef6c4bf4f845c8cb796