[INFO] fetching crate libipld 0.3.0...
[INFO] checking libipld-0.3.0 against try#d990716b6a1fdde1300748828a9c9e79dfd0b898 for pr-74846
[INFO] extracting crate libipld 0.3.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate libipld 0.3.0 on toolchain d990716b6a1fdde1300748828a9c9e79dfd0b898
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libipld 0.3.0
[INFO] finished tweaking crates.io crate libipld 0.3.0
[INFO] tweaked toml for crates.io crate libipld 0.3.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] Blocking waiting for file lock on package cache
[INFO] [stderr] Downloading crates ...
[INFO] [stderr] Downloaded libipld-json v0.3.0
[INFO] [stderr] Downloaded libipld-pb v0.3.0
[INFO] [stderr] Downloaded libipld-cbor-derive v0.3.0
[INFO] [stderr] Downloaded libipld-cbor v0.3.0
[INFO] [stderr] Downloaded model v0.1.2
[INFO] [stderr] Downloaded libipld-macro v0.3.0
[INFO] [stderr] Downloaded permutohedron v0.2.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1ce985b19faeca652b49c58e3505a8405569aab296186180ae4a2486e5cb134e
[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" "1ce985b19faeca652b49c58e3505a8405569aab296186180ae4a2486e5cb134e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1ce985b19faeca652b49c58e3505a8405569aab296186180ae4a2486e5cb134e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ce985b19faeca652b49c58e3505a8405569aab296186180ae4a2486e5cb134e", kill_on_drop: false }`
[INFO] [stdout] 1ce985b19faeca652b49c58e3505a8405569aab296186180ae4a2486e5cb134e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1141953d6df47dc1ea760c55928afa4699ad6110f3f7725dac813325c055c9d1
[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" "1141953d6df47dc1ea760c55928afa4699ad6110f3f7725dac813325c055c9d1", kill_on_drop: false }`
[INFO] [stderr] Checking cfg-if v0.1.10
[INFO] [stderr] Compiling byteorder v1.3.4
[INFO] [stderr] Compiling syn v1.0.38
[INFO] [stderr] Checking lazy_static v1.4.0
[INFO] [stderr] Checking rand_core v0.4.2
[INFO] [stderr] Compiling autocfg v0.1.7
[INFO] [stderr] Compiling maybe-uninit v2.0.0
[INFO] [stderr] Compiling semver-parser v0.7.0
[INFO] [stderr] Checking ppv-lite86 v0.2.8
[INFO] [stderr] Compiling ryu v1.0.5
[INFO] [stderr] Compiling rayon-core v1.7.1
[INFO] [stderr] Checking scopeguard v1.1.0
[INFO] [stderr] Checking remove_dir_all v0.5.3
[INFO] [stderr] Checking regex-syntax v0.6.18
[INFO] [stderr] Checking fnv v1.0.7
[INFO] [stderr] Checking itoa v0.4.6
[INFO] [stderr] Checking either v1.6.0
[INFO] [stderr] Compiling serde_json v1.0.57
[INFO] [stderr] Checking unicode-width v0.1.8
[INFO] [stderr] Compiling serde_derive v1.0.115
[INFO] [stderr] Checking same-file v1.0.6
[INFO] [stderr] Checking slab v0.4.2
[INFO] [stderr] Checking permutohedron v0.2.4
[INFO] [stderr] Compiling crossbeam-utils v0.7.2
[INFO] [stderr] Compiling num-traits v0.2.12
[INFO] [stderr] Compiling memoffset v0.5.5
[INFO] [stderr] Compiling crossbeam-epoch v0.8.2
[INFO] [stderr] Compiling rayon v1.3.1
[INFO] [stderr] Checking rand_core v0.3.1
[INFO] [stderr] Checking rand_jitter v0.1.4
[INFO] [stderr] Checking textwrap v0.11.0
[INFO] [stderr] Compiling semver v0.9.0
[INFO] [stderr] Checking walkdir v2.3.1
[INFO] [stderr] Checking libc v0.2.74
[INFO] [stderr] Checking memchr v2.3.3
[INFO] [stderr] Checking itertools v0.9.0
[INFO] [stderr] Checking bitflags v1.2.1
[INFO] [stderr] Checking log v0.4.11
[INFO] [stderr] Checking rand_xorshift v0.1.1
[INFO] [stderr] Checking rand_isaac v0.1.1
[INFO] [stderr] Checking rand_hc v0.1.0
[INFO] [stderr] Checking serde_cbor v0.11.1
[INFO] [stderr] Checking clap v2.33.3
[INFO] [stderr] Compiling rustc_version v0.2.3
[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 getrandom v0.1.14
[INFO] [stderr] Checking num_cpus v1.13.0
[INFO] [stderr] Checking socket2 v0.3.12
[INFO] [stderr] Checking polling v0.1.5
[INFO] [stderr] Checking wait-timeout v0.2.0
[INFO] [stderr] Checking rand v0.5.6
[INFO] [stderr] Checking rand_os v0.1.3
[INFO] [stderr] Checking atty v0.2.14
[INFO] [stderr] Checking futures-lite v0.1.11
[INFO] [stderr] Checking csv-core v0.1.10
[INFO] [stderr] Checking kv-log-macro v1.0.7
[INFO] [stderr] Checking block-buffer v0.7.3
[INFO] [stderr] Checking regex-automata v0.1.9
[INFO] [stderr] Checking rand_core v0.5.1
[INFO] [stderr] Checking crossbeam-queue v0.2.3
[INFO] [stderr] Compiling cast v0.2.3
[INFO] [stderr] Checking sha-1 v0.8.2
[INFO] [stderr] Checking sha3 v0.8.2
[INFO] [stderr] Checking sha2 v0.8.2
[INFO] [stderr] Checking rand_chacha v0.2.2
[INFO] [stderr] Checking bstr v0.2.13
[INFO] [stderr] Checking crossbeam-deque v0.7.3
[INFO] [stderr] Checking criterion-plot v0.4.3
[INFO] [stderr] Checking multihash v0.11.2
[INFO] [stderr] Checking plotters v0.2.15
[INFO] [stderr] Checking async-io v0.1.11
[INFO] [stderr] Checking blocking v0.5.1
[INFO] [stderr] Checking rand v0.7.3
[INFO] [stderr] Checking tinytemplate v1.1.0
[INFO] [stderr] Checking regex v1.3.9
[INFO] [stderr] Checking async-executor v0.1.2
[INFO] [stderr] Checking csv v1.1.3
[INFO] [stderr] Checking tempfile v3.1.0
[INFO] [stderr] Checking rusty-fork v0.2.2
[INFO] [stderr] Checking proptest v0.8.7
[INFO] [stderr] Checking proptest v0.9.6
[INFO] [stderr] Compiling synstructure v0.12.4
[INFO] [stderr] Checking model v0.1.2
[INFO] [stderr] Compiling data-encoding-macro-internal v0.1.8
[INFO] [stderr] Compiling thiserror-impl v1.0.20
[INFO] [stderr] Compiling async-attributes v1.1.1
[INFO] [stderr] Compiling libipld-cbor-derive v0.3.0
[INFO] [stderr] Checking async-std v1.6.3
[INFO] [stderr] Checking data-encoding-macro v0.1.8
[INFO] [stderr] Checking multibase v0.8.0
[INFO] [stderr] Checking cid v0.5.1
[INFO] [stderr] Checking thiserror v1.0.20
[INFO] [stderr] Checking libipld-core v0.3.1
[INFO] [stderr] Checking libipld-cbor v0.3.0
[INFO] [stderr] Checking libipld-macro v0.3.0
[INFO] [stderr] Checking libipld v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr] Checking criterion v0.3.3
[INFO] [stdout] error[E0706]: functions in traits cannot be declared `async`
[INFO] [stdout] --> benches/store.rs:26:5
[INFO] [stdout] |
[INFO] [stdout] 26 | async fn read(&self, cid: &Cid) -> Result