[INFO] fetching crate json2cbor 1.0.0...
[INFO] checking json2cbor-1.0.0 against try#9c1dcf141bc0875407c4eb36972857bd3db713e2 for pr-81863
[INFO] extracting crate json2cbor 1.0.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate json2cbor 1.0.0 on toolchain 9c1dcf141bc0875407c4eb36972857bd3db713e2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate json2cbor 1.0.0
[INFO] finished tweaking crates.io crate json2cbor 1.0.0
[INFO] tweaked toml for crates.io crate json2cbor 1.0.0 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "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] 6d0272737a428dc3b990f0b1636e057e66d30d4b22afcf25b22f80271eedcbd1
[INFO] running `Command { std: "docker" "start" "-a" "6d0272737a428dc3b990f0b1636e057e66d30d4b22afcf25b22f80271eedcbd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6d0272737a428dc3b990f0b1636e057e66d30d4b22afcf25b22f80271eedcbd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d0272737a428dc3b990f0b1636e057e66d30d4b22afcf25b22f80271eedcbd1", kill_on_drop: false }`
[INFO] [stdout] 6d0272737a428dc3b990f0b1636e057e66d30d4b22afcf25b22f80271eedcbd1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b2ce6393cd869d01c43007a664d0d5cc849af432acd41048c77c181e17f587de
[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" "b2ce6393cd869d01c43007a664d0d5cc849af432acd41048c77c181e17f587de", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.62
[INFO] [stderr]    Compiling anyhow v1.0.38
[INFO] [stderr]     Checking byteorder v1.4.2
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking half v1.7.1
[INFO] [stderr]     Checking serde_cbor v0.10.2
[INFO] [stderr]     Checking serde-transcode v1.1.0
[INFO] [stderr]     Checking json2cbor v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.44s
[INFO] running `Command { std: "docker" "inspect" "b2ce6393cd869d01c43007a664d0d5cc849af432acd41048c77c181e17f587de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2ce6393cd869d01c43007a664d0d5cc849af432acd41048c77c181e17f587de", kill_on_drop: false }`
[INFO] [stdout] b2ce6393cd869d01c43007a664d0d5cc849af432acd41048c77c181e17f587de