[INFO] cloning repository https://github.com/fcostin/go_vs_rust_json_deserialise
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fcostin/go_vs_rust_json_deserialise" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffcostin%2Fgo_vs_rust_json_deserialise", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffcostin%2Fgo_vs_rust_json_deserialise'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 843dd1a0ee96619796476586e2966a281d7f0100
[INFO] checking fcostin/go_vs_rust_json_deserialise against try#8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346 for pr-86194
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffcostin%2Fgo_vs_rust_json_deserialise" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fcostin/go_vs_rust_json_deserialise on toolchain 8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/fcostin/go_vs_rust_json_deserialise
[INFO] finished tweaking git repo https://github.com/fcostin/go_vs_rust_json_deserialise
[INFO] tweaked toml for git repo https://github.com/fcostin/go_vs_rust_json_deserialise written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/fcostin/go_vs_rust_json_deserialise already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-macro2 v0.4.25
[INFO] [stderr]   Downloaded serde_json v1.0.36
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cd69ef64e34a03697e912830ef824e7709b4413c72489ec30d44cb23bc72cc95
[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" "cd69ef64e34a03697e912830ef824e7709b4413c72489ec30d44cb23bc72cc95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cd69ef64e34a03697e912830ef824e7709b4413c72489ec30d44cb23bc72cc95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd69ef64e34a03697e912830ef824e7709b4413c72489ec30d44cb23bc72cc95", kill_on_drop: false }`
[INFO] [stdout] cd69ef64e34a03697e912830ef824e7709b4413c72489ec30d44cb23bc72cc95
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] e3d31f7c6602bd313c66402a599831fc17a4e489b8aa60de2e81dbe5f0bc224e
[INFO] running `Command { std: "docker" "start" "-a" "e3d31f7c6602bd313c66402a599831fc17a4e489b8aa60de2e81dbe5f0bc224e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.25
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling serde v1.0.84
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]    Compiling serde_derive v1.0.84
[INFO] [stderr]     Checking serde_json v1.0.36
[INFO] [stderr]     Checking golang_json_deserialisation v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.56s
[INFO] running `Command { std: "docker" "inspect" "e3d31f7c6602bd313c66402a599831fc17a4e489b8aa60de2e81dbe5f0bc224e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3d31f7c6602bd313c66402a599831fc17a4e489b8aa60de2e81dbe5f0bc224e", kill_on_drop: false }`
[INFO] [stdout] e3d31f7c6602bd313c66402a599831fc17a4e489b8aa60de2e81dbe5f0bc224e