[INFO] fetching crate ripjson 0.9.7...
[INFO] checking ripjson-0.9.7 against try#b0d0ea232bdae12fa8da8491a91ae1db029990ef for pr-84037
[INFO] extracting crate ripjson 0.9.7 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate ripjson 0.9.7 on toolchain b0d0ea232bdae12fa8da8491a91ae1db029990ef
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ripjson 0.9.7
[INFO] finished tweaking crates.io crate ripjson 0.9.7
[INFO] tweaked toml for crates.io crate ripjson 0.9.7 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate ripjson 0.9.7 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded indextree v3.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] be8b959b20c53d9b72fc0a59c42d6b766acce66e47d83cfccd8475bd9443c18b
[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" "be8b959b20c53d9b72fc0a59c42d6b766acce66e47d83cfccd8475bd9443c18b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "be8b959b20c53d9b72fc0a59c42d6b766acce66e47d83cfccd8475bd9443c18b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be8b959b20c53d9b72fc0a59c42d6b766acce66e47d83cfccd8475bd9443c18b", kill_on_drop: false }`
[INFO] [stdout] be8b959b20c53d9b72fc0a59c42d6b766acce66e47d83cfccd8475bd9443c18b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e4c6e30bbb6346e05b89bd0cd6fde378413256e656a4b664b47ab8e443bd59e5
[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" "e4c6e30bbb6346e05b89bd0cd6fde378413256e656a4b664b47ab8e443bd59e5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.90
[INFO] [stderr]    Compiling serde v1.0.124
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking regex-syntax v0.6.23
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]     Checking environment v0.1.1
[INFO] [stderr]     Checking memchr v2.3.4
[INFO] [stderr]    Compiling syn v1.0.64
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking backtrace v0.3.56
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]     Checking regex v1.4.5
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking indextree v3.3.0
[INFO] [stderr]     Checking assert_cli v0.6.3
[INFO] [stderr]     Checking ripjson v0.9.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.43s
[INFO] running `Command { std: "docker" "inspect" "e4c6e30bbb6346e05b89bd0cd6fde378413256e656a4b664b47ab8e443bd59e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4c6e30bbb6346e05b89bd0cd6fde378413256e656a4b664b47ab8e443bd59e5", kill_on_drop: false }`
[INFO] [stdout] e4c6e30bbb6346e05b89bd0cd6fde378413256e656a4b664b47ab8e443bd59e5