[INFO] fetching crate merkle-tree-stream 0.12.1...
[INFO] checking merkle-tree-stream-0.12.1 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] extracting crate merkle-tree-stream 0.12.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate merkle-tree-stream 0.12.1 on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate merkle-tree-stream 0.12.1
[INFO] finished tweaking crates.io crate merkle-tree-stream 0.12.1
[INFO] tweaked toml for crates.io crate merkle-tree-stream 0.12.1 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate merkle-tree-stream 0.12.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded blocking v0.4.6
[INFO] [stderr]   Downloaded concurrent-queue v1.1.1
[INFO] [stderr]   Downloaded flat-tree v5.0.0
[INFO] [stderr]   Downloaded parking v1.0.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 462500d1f8f6a681087be5b4bd959043db05b7e268b29fc11ceca9583244d945
[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" "462500d1f8f6a681087be5b4bd959043db05b7e268b29fc11ceca9583244d945", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "462500d1f8f6a681087be5b4bd959043db05b7e268b29fc11ceca9583244d945", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "462500d1f8f6a681087be5b4bd959043db05b7e268b29fc11ceca9583244d945", kill_on_drop: false }`
[INFO] [stdout] 462500d1f8f6a681087be5b4bd959043db05b7e268b29fc11ceca9583244d945
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 80ba415f2b2aeafa9555374615b7cde78398df112a9de5b9939b721c69fb566d
[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" "80ba415f2b2aeafa9555374615b7cde78398df112a9de5b9939b721c69fb566d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.72
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]    Compiling pin-project-internal v0.4.22
[INFO] [stderr]    Compiling cc v1.0.58
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking futures-core v0.3.5
[INFO] [stderr]     Checking futures-sink v0.3.5
[INFO] [stderr]     Checking futures-io v0.3.5
[INFO] [stderr]     Checking parking v1.0.4
[INFO] [stderr]     Checking waker-fn v1.0.0
[INFO] [stderr]     Checking cache-padded v1.1.1
[INFO] [stderr]     Checking fastrand v1.3.3
[INFO] [stderr]     Checking async-task v3.0.0
[INFO] [stderr]     Checking flat-tree v5.0.0
[INFO] [stderr]     Checking hex v0.3.2
[INFO] [stderr]     Checking futures-task v0.3.5
[INFO] [stderr]     Checking concurrent-queue v1.1.1
[INFO] [stderr]     Checking futures-channel v0.3.5
[INFO] [stderr]     Checking merkle-tree-stream v0.12.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking socket2 v0.3.12
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]    Compiling openssl-sys v0.9.58
[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]    Compiling openssl v0.10.30
[INFO] [stderr]     Checking quickcheck v0.9.2
[INFO] [stderr]     Checking crypto-hash v0.3.4
[INFO] [stderr]     Checking pin-project v0.4.22
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking blocking v0.4.6
[INFO] [stderr]     Checking smol v0.1.18
[INFO] [stderr]     Checking async-std v1.6.2
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 50.93s
[INFO] running `Command { std: "docker" "inspect" "80ba415f2b2aeafa9555374615b7cde78398df112a9de5b9939b721c69fb566d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80ba415f2b2aeafa9555374615b7cde78398df112a9de5b9939b721c69fb566d", kill_on_drop: false }`
[INFO] [stdout] 80ba415f2b2aeafa9555374615b7cde78398df112a9de5b9939b721c69fb566d