[INFO] cloning repository https://github.com/merrilymeredith/calajson
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/merrilymeredith/calajson" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmerrilymeredith%2Fcalajson", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmerrilymeredith%2Fcalajson'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6996491ed1737d17452f807db796943da815d58b
[INFO] checking merrilymeredith/calajson against master#7f5a42b073dc2bee2aa625052eb066ee07072048 for pr-78991
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmerrilymeredith%2Fcalajson" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/merrilymeredith/calajson on toolchain 7f5a42b073dc2bee2aa625052eb066ee07072048
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/merrilymeredith/calajson
[INFO] finished tweaking git repo https://github.com/merrilymeredith/calajson
[INFO] tweaked toml for git repo https://github.com/merrilymeredith/calajson written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/merrilymeredith/calajson already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b64ac28b46a4870cf2e48e85df364441ba77a4bac0fa0efc2a2abc4db6313a47
[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" "b64ac28b46a4870cf2e48e85df364441ba77a4bac0fa0efc2a2abc4db6313a47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b64ac28b46a4870cf2e48e85df364441ba77a4bac0fa0efc2a2abc4db6313a47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b64ac28b46a4870cf2e48e85df364441ba77a4bac0fa0efc2a2abc4db6313a47", kill_on_drop: false }`
[INFO] [stdout] b64ac28b46a4870cf2e48e85df364441ba77a4bac0fa0efc2a2abc4db6313a47
[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" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b8bf39c2a2344cbc59b8559ab627874a881a81da555d5292b0acfaf41657a733
[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" "b8bf39c2a2344cbc59b8559ab627874a881a81da555d5292b0acfaf41657a733", kill_on_drop: false }`
[INFO] [stderr]    Compiling failure_derive v0.1.4
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking crc32fast v1.1.2
[INFO] [stderr]     Checking backtrace-sys v0.1.28
[INFO] [stderr]     Checking encoding_rs v0.8.13
[INFO] [stderr]    Compiling syn v0.15.23
[INFO] [stderr]     Checking memchr v2.1.2
[INFO] [stderr]     Checking serde_json v1.0.34
[INFO] [stderr]     Checking backtrace v0.3.13
[INFO] [stderr]     Checking libflate v0.1.19
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking zip v0.5.0
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]     Checking failure v0.1.4
[INFO] [stderr]     Checking quick-xml v0.13.1
[INFO] [stderr]     Checking calamine v0.14.10
[INFO] [stderr]     Checking calajson v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.21s
[INFO] running `Command { std: "docker" "inspect" "b8bf39c2a2344cbc59b8559ab627874a881a81da555d5292b0acfaf41657a733", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8bf39c2a2344cbc59b8559ab627874a881a81da555d5292b0acfaf41657a733", kill_on_drop: false }`
[INFO] [stdout] b8bf39c2a2344cbc59b8559ab627874a881a81da555d5292b0acfaf41657a733