[INFO] fetching crate yauuid 0.2.1...
[INFO] checking yauuid-0.2.1 against master#50e1dc1536264ab71c0850f346b12309477f29f7 for pr-85073
[INFO] extracting crate yauuid 0.2.1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate yauuid 0.2.1 on toolchain 50e1dc1536264ab71c0850f346b12309477f29f7
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate yauuid 0.2.1
[INFO] finished tweaking crates.io crate yauuid 0.2.1
[INFO] tweaked toml for crates.io crate yauuid 0.2.1 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 847a52afc69d311253122ee09a7d691753e322b52e87f810d8ae018d145f86e1
[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" "847a52afc69d311253122ee09a7d691753e322b52e87f810d8ae018d145f86e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "847a52afc69d311253122ee09a7d691753e322b52e87f810d8ae018d145f86e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "847a52afc69d311253122ee09a7d691753e322b52e87f810d8ae018d145f86e1", kill_on_drop: false }`
[INFO] [stdout] 847a52afc69d311253122ee09a7d691753e322b52e87f810d8ae018d145f86e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 93afe6232afd9ba188241a9bae8fe3d54d8353ca1c4133dfcd9fbe0bb2005759
[INFO] running `Command { std: "docker" "start" "-a" "93afe6232afd9ba188241a9bae8fe3d54d8353ca1c4133dfcd9fbe0bb2005759", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking sha1 v0.6.0
[INFO] [stderr]     Checking md5 v0.6.1
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking generic-array v0.12.4
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]    Compiling pest v2.1.3
[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_xoshiro v0.1.0
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking sha-1 v0.8.2
[INFO] [stderr]     Checking md-5 v0.8.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.4
[INFO] [stderr]    Compiling memoffset v0.6.3
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking crossbeam-epoch v0.9.4
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking yauuid v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:282:32
[INFO] [stdout]     |
[INFO] [stdout] 282 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]     |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling semver-parser v0.10.2
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling semver v0.11.0
[INFO] [stderr]    Compiling rustc_version v0.3.3
[INFO] [stderr]    Compiling cast v0.2.6
[INFO] [stderr]     Checking criterion-plot v0.3.1
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stderr]     Checking bstr v0.2.16
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking criterion v0.2.11
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:282:32
[INFO] [stdout]     |
[INFO] [stdout] 282 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]     |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 52.47s
[INFO] running `Command { std: "docker" "inspect" "93afe6232afd9ba188241a9bae8fe3d54d8353ca1c4133dfcd9fbe0bb2005759", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93afe6232afd9ba188241a9bae8fe3d54d8353ca1c4133dfcd9fbe0bb2005759", kill_on_drop: false }`
[INFO] [stdout] 93afe6232afd9ba188241a9bae8fe3d54d8353ca1c4133dfcd9fbe0bb2005759