[INFO] updating cached repository https://github.com/Chilinot/RustyTree
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5297f8ca51b2df64b95e82abf3d3afd649272415
[INFO] testing Chilinot/RustyTree against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2FChilinot%2FRustyTree" "work/builds/worker-10/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Chilinot/RustyTree on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Chilinot/RustyTree
[INFO] finished tweaking git repo https://github.com/Chilinot/RustyTree
[INFO] tweaked toml for git repo https://github.com/Chilinot/RustyTree written to work/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/Chilinot/RustyTree already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /big/crater/work/builds/worker-10/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Updating git repository `https://github.com/chilinot/rustyqueue.git`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-10/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] dd331dc7b23af0fd48f016bf4a1980e6c014251d6d34f3d2e2726fe48bdf23cb
[INFO] running `"docker" "start" "-a" "dd331dc7b23af0fd48f016bf4a1980e6c014251d6d34f3d2e2726fe48bdf23cb"`
[INFO] [stderr]    Compiling rusty_queue v0.1.0 (https://github.com/chilinot/rustyqueue.git#b263bccd)
[INFO] [stderr]    Compiling rusty_tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]    --> src/binary_tree.rs:113:24
[INFO] [stderr]     |
[INFO] [stderr] 113 |         for counter in (1..max_nodes+1) {
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.18s
[INFO] running `"docker" "inspect" "dd331dc7b23af0fd48f016bf4a1980e6c014251d6d34f3d2e2726fe48bdf23cb"`
[INFO] running `"docker" "rm" "-f" "dd331dc7b23af0fd48f016bf4a1980e6c014251d6d34f3d2e2726fe48bdf23cb"`
[INFO] [stdout] dd331dc7b23af0fd48f016bf4a1980e6c014251d6d34f3d2e2726fe48bdf23cb
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-10/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] e86eee23cd30840890947ddf6fd24a0b9b948aef8b0fc8c4b7c5efb80368659d
[INFO] running `"docker" "start" "-a" "e86eee23cd30840890947ddf6fd24a0b9b948aef8b0fc8c4b7c5efb80368659d"`
[INFO] [stderr]    Compiling rusty_tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]    --> src/binary_tree.rs:113:24
[INFO] [stderr]     |
[INFO] [stderr] 113 |         for counter in (1..max_nodes+1) {
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.03s
[INFO] running `"docker" "inspect" "e86eee23cd30840890947ddf6fd24a0b9b948aef8b0fc8c4b7c5efb80368659d"`
[INFO] running `"docker" "rm" "-f" "e86eee23cd30840890947ddf6fd24a0b9b948aef8b0fc8c4b7c5efb80368659d"`
[INFO] [stdout] e86eee23cd30840890947ddf6fd24a0b9b948aef8b0fc8c4b7c5efb80368659d
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-10/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] a1c845a2643057def94337efc7e2e6cb48b190878846ab258116d463add7e0e4
[INFO] running `"docker" "start" "-a" "a1c845a2643057def94337efc7e2e6cb48b190878846ab258116d463add7e0e4"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rusty_tree-fa13efc1e94b9b76
[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] [stderr]      Running /opt/rustwide/target/debug/deps/testrun-c36112fbfc937d8f
[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] [stderr]    Doc-tests rusty_tree
[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 `"docker" "inspect" "a1c845a2643057def94337efc7e2e6cb48b190878846ab258116d463add7e0e4"`
[INFO] running `"docker" "rm" "-f" "a1c845a2643057def94337efc7e2e6cb48b190878846ab258116d463add7e0e4"`
[INFO] [stdout] a1c845a2643057def94337efc7e2e6cb48b190878846ab258116d463add7e0e4