[INFO] fetching crate json-pop 0.0.2...
[INFO] testing json-pop-0.0.2 against 1.52.1 for beta-1.52-2
[INFO] extracting crate json-pop 0.0.2 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate json-pop 0.0.2 on toolchain 1.52.1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.52.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate json-pop 0.0.2
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate json-pop 0.0.2
[INFO] tweaked toml for crates.io crate json-pop 0.0.2 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate json-pop 0.0.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.52.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+1.52.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e630ae27b74966f0046474afd7564e1299ad74587a9293bbff5eaa18c8b75f93
[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" "e630ae27b74966f0046474afd7564e1299ad74587a9293bbff5eaa18c8b75f93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e630ae27b74966f0046474afd7564e1299ad74587a9293bbff5eaa18c8b75f93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e630ae27b74966f0046474afd7564e1299ad74587a9293bbff5eaa18c8b75f93", kill_on_drop: false }`
[INFO] [stdout] e630ae27b74966f0046474afd7564e1299ad74587a9293bbff5eaa18c8b75f93
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=warn" "-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" "+1.52.1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 58450c750a12099f43977f530e0c68b7e1781e731091e5d6b0bfc4b60266935b
[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" "58450c750a12099f43977f530e0c68b7e1781e731091e5d6b0bfc4b60266935b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]    Compiling bit-vec v0.6.2
[INFO] [stderr]    Compiling diff v0.1.12
[INFO] [stderr]    Compiling lalrpop-util v0.18.1
[INFO] [stderr]    Compiling beef v0.4.4
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling ena v0.13.1
[INFO] [stderr]    Compiling lexical-core v0.7.4
[INFO] [stderr]    Compiling ascii-canvas v2.0.0
[INFO] [stderr]    Compiling bit-set v0.5.2
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling string_cache_codegen v0.4.4
[INFO] [stderr]    Compiling lexical v5.2.0
[INFO] [stderr]    Compiling string_cache v0.7.5
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]    Compiling logos-derive v0.11.5
[INFO] [stderr]    Compiling logos v0.11.4
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]    Compiling docopt v1.1.0
[INFO] [stderr]    Compiling lalrpop v0.18.1
[INFO] [stderr]    Compiling json-pop v0.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 43s
[INFO] running `Command { std: "docker" "inspect" "58450c750a12099f43977f530e0c68b7e1781e731091e5d6b0bfc4b60266935b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58450c750a12099f43977f530e0c68b7e1781e731091e5d6b0bfc4b60266935b", kill_on_drop: false }`
[INFO] [stdout] 58450c750a12099f43977f530e0c68b7e1781e731091e5d6b0bfc4b60266935b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=warn" "-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" "+1.52.1" "test" "--frozen" "--no-run" "--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] 4511e152aa3e114a5513572eb2ed88ce05ac59a4e59d9e8ef9b136a9e79814b8
[INFO] running `Command { std: "docker" "start" "-a" "4511e152aa3e114a5513572eb2ed88ce05ac59a4e59d9e8ef9b136a9e79814b8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling paw-raw v1.0.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling paw-attributes v1.0.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling paw v1.0.0
[INFO] [stderr]    Compiling structopt-derive v0.4.9
[INFO] [stderr]    Compiling structopt v0.3.16
[INFO] [stderr]    Compiling json-pop v0.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 14.22s
[INFO] running `Command { std: "docker" "inspect" "4511e152aa3e114a5513572eb2ed88ce05ac59a4e59d9e8ef9b136a9e79814b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4511e152aa3e114a5513572eb2ed88ce05ac59a4e59d9e8ef9b136a9e79814b8", kill_on_drop: false }`
[INFO] [stdout] 4511e152aa3e114a5513572eb2ed88ce05ac59a4e59d9e8ef9b136a9e79814b8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=warn" "-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" "+1.52.1" "test" "--frozen", 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] 951ac7fe3a8473a9da7f491d68a75cb927a5fc9f3c22a1fef4b15287c8d9e49f
[INFO] running `Command { std: "docker" "start" "-a" "951ac7fe3a8473a9da7f491d68a75cb927a5fc9f3c22a1fef4b15287c8d9e49f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.37s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/json_pop-968b36590da1136d)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stderr]    Doc-tests json-pop
[INFO] [stdout] test test::test_invalid ... ok
[INFO] [stdout] test test::test_valid ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "951ac7fe3a8473a9da7f491d68a75cb927a5fc9f3c22a1fef4b15287c8d9e49f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "951ac7fe3a8473a9da7f491d68a75cb927a5fc9f3c22a1fef4b15287c8d9e49f", kill_on_drop: false }`
[INFO] [stdout] 951ac7fe3a8473a9da7f491d68a75cb927a5fc9f3c22a1fef4b15287c8d9e49f