[INFO] fetching crate jsonseq 0.1.1...
[INFO] testing jsonseq-0.1.1 against 1.49.0 for beta-1.50-1
[INFO] extracting crate jsonseq 0.1.1 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate jsonseq 0.1.1 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate jsonseq 0.1.1
[INFO] finished tweaking crates.io crate jsonseq 0.1.1
[INFO] tweaked toml for crates.io crate jsonseq 0.1.1 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", 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] de326f68ca2d99ef1a747e904fa3759b345c219412ba47d4b89b5886a05eee20
[INFO] running `Command { std: "docker" "start" "-a" "de326f68ca2d99ef1a747e904fa3759b345c219412ba47d4b89b5886a05eee20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de326f68ca2d99ef1a747e904fa3759b345c219412ba47d4b89b5886a05eee20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de326f68ca2d99ef1a747e904fa3759b345c219412ba47d4b89b5886a05eee20", kill_on_drop: false }`
[INFO] [stdout] de326f68ca2d99ef1a747e904fa3759b345c219412ba47d4b89b5886a05eee20
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9345e1e8489e582edf73ca400b04bc1624e1c4e44156d36eb08272d9d5b3a66e
[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" "9345e1e8489e582edf73ca400b04bc1624e1c4e44156d36eb08272d9d5b3a66e", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.57
[INFO] [stderr]    Compiling thiserror-impl v1.0.23
[INFO] [stderr]    Compiling thiserror v1.0.23
[INFO] [stderr]    Compiling jsonseq v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.73s
[INFO] running `Command { std: "docker" "inspect" "9345e1e8489e582edf73ca400b04bc1624e1c4e44156d36eb08272d9d5b3a66e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9345e1e8489e582edf73ca400b04bc1624e1c4e44156d36eb08272d9d5b3a66e", kill_on_drop: false }`
[INFO] [stdout] 9345e1e8489e582edf73ca400b04bc1624e1c4e44156d36eb08272d9d5b3a66e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 443b97bb5cc680c9b4215c700b166c22726f47f44b1e5a82e663b1f90084fd0a
[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" "443b97bb5cc680c9b4215c700b166c22726f47f44b1e5a82e663b1f90084fd0a", kill_on_drop: false }`
[INFO] [stderr]    Compiling jsonseq v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/write.rs:56:13
[INFO] [stdout]    |
[INFO] [stdout] 56 |         let mut buf = Vec::new();
[INFO] [stdout]    |             ----^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.30s
[INFO] running `Command { std: "docker" "inspect" "443b97bb5cc680c9b4215c700b166c22726f47f44b1e5a82e663b1f90084fd0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "443b97bb5cc680c9b4215c700b166c22726f47f44b1e5a82e663b1f90084fd0a", kill_on_drop: false }`
[INFO] [stdout] 443b97bb5cc680c9b4215c700b166c22726f47f44b1e5a82e663b1f90084fd0a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 39b3a4cdcab3662fb96207aaab83f271b544fbd252b68822160100d5f252d637
[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" "39b3a4cdcab3662fb96207aaab83f271b544fbd252b68822160100d5f252d637", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stdout] running 15 tests
[INFO] [stderr]   --> src/write.rs:56:13
[INFO] [stderr]    |
[INFO] [stderr] 56 |         let mut buf = Vec::new();
[INFO] [stderr]    |             ----^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/jsonseq-240ca4c62a441c24
[INFO] [stdout] test read::tests::empty1 ... ok
[INFO] [stdout] test read::tests::empty2 ... ok
[INFO] [stdout] test read::tests::json1 ... ok
[INFO] [stdout] test read::tests::json_with_nl1 ... ok
[INFO] [stdout] test read::tests::json_with_nl2 ... ok
[INFO] [stdout] test read::tests::json2 ... ok
[INFO] [stdout] test read::tests::nl1 ... ok
[INFO] [stdout] test read::tests::simple1 ... ok
[INFO] [stdout] test write::tests::raw1 ... ok
[INFO] [stdout] test read::tests::simple5 ... ok
[INFO] [stderr]    Doc-tests jsonseq
[INFO] [stdout] test read::tests::simple4 ... ok
[INFO] [stdout] test tests::roundtrip1 ... ok
[INFO] [stdout] test write::tests::json1 ... ok
[INFO] [stdout] test read::tests::simple3 ... ok
[INFO] [stdout] test read::tests::simple2 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 15 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "39b3a4cdcab3662fb96207aaab83f271b544fbd252b68822160100d5f252d637", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39b3a4cdcab3662fb96207aaab83f271b544fbd252b68822160100d5f252d637", kill_on_drop: false }`
[INFO] [stdout] 39b3a4cdcab3662fb96207aaab83f271b544fbd252b68822160100d5f252d637