[INFO] fetching crate serde_json_v8 0.0.1...
[INFO] checking serde_json_v8-0.0.1 against try#3e22d1f9053c0fc87629b3c6d5d9567856368e5d for pr-78714
[INFO] extracting crate serde_json_v8 0.0.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate serde_json_v8 0.0.1 on toolchain 3e22d1f9053c0fc87629b3c6d5d9567856368e5d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde_json_v8 0.0.1
[INFO] finished tweaking crates.io crate serde_json_v8 0.0.1
[INFO] tweaked toml for crates.io crate serde_json_v8 0.0.1 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded automod v0.1.2
[INFO] [stderr]   Downloaded serde_stacker v0.1.4
[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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c6a596cedd01f5a457b7c879ba81a3cad12a5eb79b13f2e1ec46f55a5b3bd09a
[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" "c6a596cedd01f5a457b7c879ba81a3cad12a5eb79b13f2e1ec46f55a5b3bd09a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c6a596cedd01f5a457b7c879ba81a3cad12a5eb79b13f2e1ec46f55a5b3bd09a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6a596cedd01f5a457b7c879ba81a3cad12a5eb79b13f2e1ec46f55a5b3bd09a", kill_on_drop: false }`
[INFO] [stdout] c6a596cedd01f5a457b7c879ba81a3cad12a5eb79b13f2e1ec46f55a5b3bd09a
[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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ec29a85ee6176618b107d37b8b9af841e69e8271a259cec8da0ce7327fda7eb3
[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" "ec29a85ee6176618b107d37b8b9af841e69e8271a259cec8da0ce7327fda7eb3", kill_on_drop: false }`
[INFO] [stderr]    Compiling compiletest_rs v0.3.26
[INFO] [stderr]     Checking filetime v0.2.13
[INFO] [stderr]     Checking term v0.6.1
[INFO] [stderr]     Checking stacker v0.1.12
[INFO] [stderr]    Compiling automod v0.1.2
[INFO] [stderr]     Checking serde_bytes v0.11.5
[INFO] [stderr]     Checking rustfix v0.4.6
[INFO] [stderr]     Checking serde_json_v8 v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]    --> src/lib.rs:321:1
[INFO] [stdout]     |
[INFO] [stdout] 321 | #[macro_use]
[INFO] [stdout]     | ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking serde_stacker v0.1.4
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking tester v0.6.0
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]    --> src/lib.rs:321:1
[INFO] [stdout]     |
[INFO] [stdout] 321 | #[macro_use]
[INFO] [stdout]     | ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.72s
[INFO] running `Command { std: "docker" "inspect" "ec29a85ee6176618b107d37b8b9af841e69e8271a259cec8da0ce7327fda7eb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec29a85ee6176618b107d37b8b9af841e69e8271a259cec8da0ce7327fda7eb3", kill_on_drop: false }`
[INFO] [stdout] ec29a85ee6176618b107d37b8b9af841e69e8271a259cec8da0ce7327fda7eb3