[INFO] fetching crate destream_json 0.7.0...
[INFO] checking destream_json-0.7.0 against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] extracting crate destream_json 0.7.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate destream_json 0.7.0 on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate destream_json 0.7.0
[INFO] finished tweaking crates.io crate destream_json 0.7.0
[INFO] tweaked toml for crates.io crate destream_json 0.7.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded collate v0.1.10
[INFO] [stderr]   Downloaded safecast v0.1.1
[INFO] [stderr]   Downloaded number-general v0.3.9
[INFO] [stderr]   Downloaded destream v0.5.0
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--no-deps" "--format-version=1", 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] e7b3cbea5c966370f315220a9d8021acd5df603ee89a0b7fc01a6e5e2a1f9755
[INFO] running `Command { std: "docker" "start" "-a" "e7b3cbea5c966370f315220a9d8021acd5df603ee89a0b7fc01a6e5e2a1f9755", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e7b3cbea5c966370f315220a9d8021acd5df603ee89a0b7fc01a6e5e2a1f9755", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7b3cbea5c966370f315220a9d8021acd5df603ee89a0b7fc01a6e5e2a1f9755", kill_on_drop: false }`
[INFO] [stdout] e7b3cbea5c966370f315220a9d8021acd5df603ee89a0b7fc01a6e5e2a1f9755
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f13c04abb24d7cc62b95b22412df7194e366ea85fde07087d0c40aa7fc7d61ee
[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" "f13c04abb24d7cc62b95b22412df7194e366ea85fde07087d0c40aa7fc7d61ee", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling futures-core v0.3.15
[INFO] [stderr]     Checking futures-sink v0.3.15
[INFO] [stderr]    Compiling async-trait v0.1.50
[INFO] [stderr]     Checking bytes v1.0.1
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]     Checking safecast v0.1.1
[INFO] [stderr]     Checking collate v0.1.10
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling tokio v1.8.2
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling futures-macro v0.3.15
[INFO] [stderr]    Compiling tokio-macros v1.3.0
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling pin-project-internal v1.0.7
[INFO] [stderr]    Compiling async-stream-impl v0.3.2
[INFO] [stderr]     Checking futures-channel v0.3.15
[INFO] [stderr]     Checking futures-util v0.3.15
[INFO] [stderr]     Checking async-stream v0.3.2
[INFO] [stderr]     Checking pin-project v1.0.7
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]     Checking tokio-stream v0.1.7
[INFO] [stderr]     Checking tokio-util v0.6.7
[INFO] [stderr]     Checking tokio-test v0.4.2
[INFO] [stderr]     Checking futures-executor v0.3.15
[INFO] [stderr]     Checking futures v0.3.15
[INFO] [stderr]     Checking destream v0.5.0
[INFO] [stderr]     Checking number-general v0.3.9
[INFO] [stderr]     Checking destream_json v0.7.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.29s
[INFO] running `Command { std: "docker" "inspect" "f13c04abb24d7cc62b95b22412df7194e366ea85fde07087d0c40aa7fc7d61ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f13c04abb24d7cc62b95b22412df7194e366ea85fde07087d0c40aa7fc7d61ee", kill_on_drop: false }`
[INFO] [stdout] f13c04abb24d7cc62b95b22412df7194e366ea85fde07087d0c40aa7fc7d61ee