[INFO] updating cached repository kcomas/rust-trees
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/kcomas/rust-trees
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/kcomas/rust-trees" "work/ex/beta-1.37-6/sources/1.36.0/gh/kcomas/rust-trees"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/kcomas/rust-trees'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/kcomas/rust-trees" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/kcomas/rust-trees"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/kcomas/rust-trees'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ce64489eb8fadce31c44984ef511a169ce2ba219
[INFO] sha for GitHub repo kcomas/rust-trees: ce64489eb8fadce31c44984ef511a169ce2ba219
[INFO] validating manifest of kcomas/rust-trees on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of kcomas/rust-trees on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing kcomas/rust-trees
[INFO] finished frobbing kcomas/rust-trees
[INFO] frobbed toml for kcomas/rust-trees written to work/ex/beta-1.37-6/sources/1.36.0/gh/kcomas/rust-trees/Cargo.toml
[INFO] started frobbing kcomas/rust-trees
[INFO] finished frobbing kcomas/rust-trees
[INFO] frobbed toml for kcomas/rust-trees written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/kcomas/rust-trees/Cargo.toml
[INFO] crate kcomas/rust-trees already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing kcomas/rust-trees against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/kcomas/rust-trees:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] b3c84eb9397a7a7d46cb3536f1a9342a9d364542da10e8c04820357674f1d589
[INFO] running `"docker" "start" "-a" "b3c84eb9397a7a7d46cb3536f1a9342a9d364542da10e8c04820357674f1d589"`
[INFO] [stderr]    Compiling serde v1.0.9
[INFO] [stderr]    Compiling num_cpus v1.6.2
[INFO] [stderr]    Compiling bytes v0.4.4
[INFO] [stderr]    Compiling serde_derive v1.0.9
[INFO] [stderr]    Compiling futures-cpupool v0.1.5
[INFO] [stderr]    Compiling tokio-io v0.1.2
[INFO] [stderr]    Compiling tokio-core v0.1.8
[INFO] [stderr]    Compiling tokio-proto v0.1.1
[INFO] [stderr]    Compiling hyper v0.11.1
[INFO] [stderr]    Compiling serde_json v1.0.2
[INFO] [stderr]    Compiling tree v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `query`
[INFO] [stderr]   --> src/tree/http_server.rs:35:29
[INFO] [stderr]    |
[INFO] [stderr] 35 |                 if let Some(query) = req.query() {
[INFO] [stderr]    |                             ^^^^^ help: consider prefixing with an underscore: `_query`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.40s
[INFO] running `"docker" "inspect" "b3c84eb9397a7a7d46cb3536f1a9342a9d364542da10e8c04820357674f1d589"`
[INFO] running `"docker" "rm" "-f" "b3c84eb9397a7a7d46cb3536f1a9342a9d364542da10e8c04820357674f1d589"`
[INFO] [stdout] b3c84eb9397a7a7d46cb3536f1a9342a9d364542da10e8c04820357674f1d589
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/kcomas/rust-trees:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 9ccd6e31313a092a269c7839de2957a53ceaaa6cf5040c7c54b9e32f62dcc8a2
[INFO] running `"docker" "start" "-a" "9ccd6e31313a092a269c7839de2957a53ceaaa6cf5040c7c54b9e32f62dcc8a2"`
[INFO] [stderr]    Compiling tree v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `query`
[INFO] [stderr]   --> src/tree/http_server.rs:35:29
[INFO] [stderr]    |
[INFO] [stderr] 35 |                 if let Some(query) = req.query() {
[INFO] [stderr]    |                             ^^^^^ help: consider prefixing with an underscore: `_query`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.72s
[INFO] running `"docker" "inspect" "9ccd6e31313a092a269c7839de2957a53ceaaa6cf5040c7c54b9e32f62dcc8a2"`
[INFO] running `"docker" "rm" "-f" "9ccd6e31313a092a269c7839de2957a53ceaaa6cf5040c7c54b9e32f62dcc8a2"`
[INFO] [stdout] 9ccd6e31313a092a269c7839de2957a53ceaaa6cf5040c7c54b9e32f62dcc8a2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/kcomas/rust-trees:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 9eda8e7939bdbc092c654bcc8f76524f6585d3c8a9ab30aeaa55d869c5b92b3b
[INFO] running `"docker" "start" "-a" "9eda8e7939bdbc092c654bcc8f76524f6585d3c8a9ab30aeaa55d869c5b92b3b"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tree::node::test::basic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/tree-26ea3d36ae4eb448
[INFO] running `"docker" "inspect" "9eda8e7939bdbc092c654bcc8f76524f6585d3c8a9ab30aeaa55d869c5b92b3b"`
[INFO] running `"docker" "rm" "-f" "9eda8e7939bdbc092c654bcc8f76524f6585d3c8a9ab30aeaa55d869c5b92b3b"`
[INFO] [stdout] 9eda8e7939bdbc092c654bcc8f76524f6585d3c8a9ab30aeaa55d869c5b92b3b