[INFO] fetching crate edit_tree 0.2.0...
[INFO] testing edit_tree-0.2.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate edit_tree 0.2.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate edit_tree 0.2.0 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 edit_tree 0.2.0
[INFO] finished tweaking crates.io crate edit_tree 0.2.0
[INFO] tweaked toml for crates.io crate edit_tree 0.2.0 written to /workspace/builds/worker-0/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] 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-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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 06a5faf1ce3e9e3c7c509c294ac714ea9b57b5a66a15be622b98cd0d2a339112
[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" "06a5faf1ce3e9e3c7c509c294ac714ea9b57b5a66a15be622b98cd0d2a339112", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "06a5faf1ce3e9e3c7c509c294ac714ea9b57b5a66a15be622b98cd0d2a339112", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06a5faf1ce3e9e3c7c509c294ac714ea9b57b5a66a15be622b98cd0d2a339112", kill_on_drop: false }`
[INFO] [stdout] 06a5faf1ce3e9e3c7c509c294ac714ea9b57b5a66a15be622b98cd0d2a339112
[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=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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 28d410104d55cd6905e2eb9fbafcdcf1154db45c2a381904242350a6a2aaf938
[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" "28d410104d55cd6905e2eb9fbafcdcf1154db45c2a381904242350a6a2aaf938", kill_on_drop: false }`
[INFO] [stderr]    Compiling seqalign v0.2.2
[INFO] [stderr]    Compiling edit_tree v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]   --> src/edit_tree.rs:14:31
[INFO] [stdout]    |
[INFO] [stdout] 14 |     static ref MEASURE: LCS = { LCS::new(1, 1) };
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_braces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.71s
[INFO] running `Command { std: "docker" "inspect" "28d410104d55cd6905e2eb9fbafcdcf1154db45c2a381904242350a6a2aaf938", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28d410104d55cd6905e2eb9fbafcdcf1154db45c2a381904242350a6a2aaf938", kill_on_drop: false }`
[INFO] [stdout] 28d410104d55cd6905e2eb9fbafcdcf1154db45c2a381904242350a6a2aaf938
[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=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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "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] 9b2809522dbb45334a0526b6cee31fcbef021856e169df0a7d1c5629255397f6
[INFO] running `Command { std: "docker" "start" "-a" "9b2809522dbb45334a0526b6cee31fcbef021856e169df0a7d1c5629255397f6", kill_on_drop: false }`
[INFO] [stderr]    Compiling edit_tree v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]   --> src/edit_tree.rs:14:31
[INFO] [stdout]    |
[INFO] [stdout] 14 |     static ref MEASURE: LCS = { LCS::new(1, 1) };
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_braces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]   --> src/edit_tree.rs:14:31
[INFO] [stdout]    |
[INFO] [stdout] 14 |     static ref MEASURE: LCS = { LCS::new(1, 1) };
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_braces)]` 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 2.27s
[INFO] running `Command { std: "docker" "inspect" "9b2809522dbb45334a0526b6cee31fcbef021856e169df0a7d1c5629255397f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b2809522dbb45334a0526b6cee31fcbef021856e169df0a7d1c5629255397f6", kill_on_drop: false }`
[INFO] [stdout] 9b2809522dbb45334a0526b6cee31fcbef021856e169df0a7d1c5629255397f6
[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=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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "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] 254b7b30af87fa4e26cac323fce7948f29c6749228dec10847587dc7f693c875
[INFO] running `Command { std: "docker" "start" "-a" "254b7b30af87fa4e26cac323fce7948f29c6749228dec10847587dc7f693c875", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/edit_tree.rs:14:31
[INFO] [stderr]    |
[INFO] [stderr] 14 |     static ref MEASURE: LCS = { LCS::new(1, 1) };
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_braces)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/edit_tree.rs:14:31
[INFO] [stderr]    |
[INFO] [stderr] 14 |     static ref MEASURE: LCS = { LCS::new(1, 1) };
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_braces)]` 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/edit_tree-8ca1e68ae5adbd3e
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test edit_tree::tests::display_edit_tree ... ok
[INFO] [stdout] test edit_tree::tests::test_graphs_inapplicable ... ok
[INFO] [stdout] test edit_tree::tests::test_graph_equality_and_applicability ... ok
[INFO] [stdout] test edit_tree::tests::test_graph_equality_outcome_2 ... ok
[INFO] [stdout] test edit_tree::tests::test_graph_equality_outcome ... ok
[INFO] [stdout] test edit_tree::tests::test_graph_equality_outcome_3 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests edit_tree
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> /opt/rustwide/workdir/src/edit_tree.rs:14:31
[INFO] [stderr]    |
[INFO] [stderr] 14 |     static ref MEASURE: LCS = { LCS::new(1, 1) };
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_braces)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[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" "254b7b30af87fa4e26cac323fce7948f29c6749228dec10847587dc7f693c875", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "254b7b30af87fa4e26cac323fce7948f29c6749228dec10847587dc7f693c875", kill_on_drop: false }`
[INFO] [stdout] 254b7b30af87fa4e26cac323fce7948f29c6749228dec10847587dc7f693c875