[INFO] crate ziptree 0.1.1 is already in cache [INFO] extracting crate ziptree 0.1.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/ziptree/0.1.1 [INFO] extracting crate ziptree 0.1.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/ziptree/0.1.1 [INFO] validating manifest of ziptree-0.1.1 on toolchain 1.37.0 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of ziptree-0.1.1 on toolchain beta-2019-08-13 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing ziptree-0.1.1 [INFO] finished frobbing ziptree-0.1.1 [INFO] frobbed toml for ziptree-0.1.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/ziptree/0.1.1/Cargo.toml [INFO] started frobbing ziptree-0.1.1 [INFO] finished frobbing ziptree-0.1.1 [INFO] frobbed toml for ziptree-0.1.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/ziptree/0.1.1/Cargo.toml [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing ziptree-0.1.1 against beta-2019-08-13 for beta-1.38-1 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/ziptree/0.1.1:/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" "+beta-2019-08-13" "build" "--frozen"` [INFO] [stdout] e5f80038ad2b5bd97f5829c50c3a1402baedceb479c80ea93273c572e7876599 [INFO] running `"docker" "start" "-a" "e5f80038ad2b5bd97f5829c50c3a1402baedceb479c80ea93273c572e7876599"` [INFO] [stderr] warning: only one of `license` or `license-file` is necessary [INFO] [stderr] Compiling ziptree v0.1.1 (/opt/crater/workdir) [INFO] [stderr] warning: unused variable: `greater` [INFO] [stderr] --> src/lib.rs:422:34 [INFO] [stderr] | [INFO] [stderr] 422 | Some(greater) => { [INFO] [stderr] | ^^^^^^^ help: consider prefixing with an underscore: `_greater` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: cannot borrow `less_nodes` as mutable because it is also borrowed as immutable [INFO] [stderr] --> src/lib.rs:372:25 [INFO] [stderr] | [INFO] [stderr] 370 | let node = less_nodes.back().unwrap(); [INFO] [stderr] | ---------- immutable borrow occurs here [INFO] [stderr] 371 | if !(**node).right.is_null() { [INFO] [stderr] 372 | less_nodes.push_back((**node).right); [INFO] [stderr] | ^^^^^^^^^^ -------------- immutable borrow later used here [INFO] [stderr] | | [INFO] [stderr] | mutable borrow occurs here [INFO] [stderr] | [INFO] [stderr] = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future [INFO] [stderr] = note: for more information, see issue #59159 [INFO] [stderr] [INFO] [stderr] warning: cannot borrow `greater_nodes` as mutable because it is also borrowed as immutable [INFO] [stderr] --> src/lib.rs:386:25 [INFO] [stderr] | [INFO] [stderr] 384 | let node = greater_nodes.back().unwrap(); [INFO] [stderr] | ------------- immutable borrow occurs here [INFO] [stderr] 385 | if !(**node).left.is_null() { [INFO] [stderr] 386 | greater_nodes.push_back((**node).left); [INFO] [stderr] | ^^^^^^^^^^^^^ ------------- immutable borrow later used here [INFO] [stderr] | | [INFO] [stderr] | mutable borrow occurs here [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default [INFO] [stderr] = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future [INFO] [stderr] = note: for more information, see issue #59159 [INFO] [stderr] [INFO] [stderr] warning: field is never used: `tree` [INFO] [stderr] --> src/lib.rs:37:5 [INFO] [stderr] | [INFO] [stderr] 37 | tree: &'a mut ZipTree, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: field is never used: `tree` [INFO] [stderr] --> src/lib.rs:60:5 [INFO] [stderr] | [INFO] [stderr] 60 | tree: &'a mut ZipTree, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `dump` [INFO] [stderr] --> src/lib.rs:534:5 [INFO] [stderr] | [INFO] [stderr] 534 | / fn dump(&self) where [INFO] [stderr] 535 | | K: Debug, [INFO] [stderr] 536 | | V: Debug, [INFO] [stderr] 537 | | { [INFO] [stderr] ... | [INFO] [stderr] 605 | | }); [INFO] [stderr] 606 | | } [INFO] [stderr] | |_____^ [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.79s [INFO] running `"docker" "inspect" "e5f80038ad2b5bd97f5829c50c3a1402baedceb479c80ea93273c572e7876599"` [INFO] running `"docker" "rm" "-f" "e5f80038ad2b5bd97f5829c50c3a1402baedceb479c80ea93273c572e7876599"` [INFO] [stdout] e5f80038ad2b5bd97f5829c50c3a1402baedceb479c80ea93273c572e7876599 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/ziptree/0.1.1:/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"` [INFO] [stdout] 2bf17986452a6b77be8ef8c22fa6f47bc308696b7e6375c91794f9e72f62f934 [INFO] running `"docker" "start" "-a" "2bf17986452a6b77be8ef8c22fa6f47bc308696b7e6375c91794f9e72f62f934"` [INFO] [stderr] warning: only one of `license` or `license-file` is necessary [INFO] [stderr] Compiling ziptree v0.1.1 (/opt/crater/workdir) [INFO] [stderr] warning: unused import: `HashMap` [INFO] [stderr] --> tests/simple.rs:2:24 [INFO] [stderr] | [INFO] [stderr] 2 | use std::collections::{HashMap, BTreeMap}; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `greater` [INFO] [stderr] --> src/lib.rs:422:34 [INFO] [stderr] | [INFO] [stderr] 422 | Some(greater) => { [INFO] [stderr] | ^^^^^^^ help: consider prefixing with an underscore: `_greater` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: cannot borrow `less_nodes` as mutable because it is also borrowed as immutable [INFO] [stderr] --> src/lib.rs:372:25 [INFO] [stderr] | [INFO] [stderr] 370 | let node = less_nodes.back().unwrap(); [INFO] [stderr] | ---------- immutable borrow occurs here [INFO] [stderr] 371 | if !(**node).right.is_null() { [INFO] [stderr] 372 | less_nodes.push_back((**node).right); [INFO] [stderr] | ^^^^^^^^^^ -------------- immutable borrow later used here [INFO] [stderr] | | [INFO] [stderr] | mutable borrow occurs here [INFO] [stderr] | [INFO] [stderr] = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future [INFO] [stderr] = note: for more information, see issue #59159 [INFO] [stderr] [INFO] [stderr] warning: cannot borrow `greater_nodes` as mutable because it is also borrowed as immutable [INFO] [stderr] --> src/lib.rs:386:25 [INFO] [stderr] | [INFO] [stderr] 384 | let node = greater_nodes.back().unwrap(); [INFO] [stderr] | ------------- immutable borrow occurs here [INFO] [stderr] 385 | if !(**node).left.is_null() { [INFO] [stderr] 386 | greater_nodes.push_back((**node).left); [INFO] [stderr] | ^^^^^^^^^^^^^ ------------- immutable borrow later used here [INFO] [stderr] | | [INFO] [stderr] | mutable borrow occurs here [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default [INFO] [stderr] = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future [INFO] [stderr] = note: for more information, see issue #59159 [INFO] [stderr] [INFO] [stderr] warning: field is never used: `tree` [INFO] [stderr] --> src/lib.rs:37:5 [INFO] [stderr] | [INFO] [stderr] 37 | tree: &'a mut ZipTree, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: field is never used: `tree` [INFO] [stderr] --> src/lib.rs:60:5 [INFO] [stderr] | [INFO] [stderr] 60 | tree: &'a mut ZipTree, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `dump` [INFO] [stderr] --> src/lib.rs:534:5 [INFO] [stderr] | [INFO] [stderr] 534 | / fn dump(&self) where [INFO] [stderr] 535 | | K: Debug, [INFO] [stderr] 536 | | V: Debug, [INFO] [stderr] 537 | | { [INFO] [stderr] ... | [INFO] [stderr] 605 | | }); [INFO] [stderr] 606 | | } [INFO] [stderr] | |_____^ [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 2.11s [INFO] running `"docker" "inspect" "2bf17986452a6b77be8ef8c22fa6f47bc308696b7e6375c91794f9e72f62f934"` [INFO] running `"docker" "rm" "-f" "2bf17986452a6b77be8ef8c22fa6f47bc308696b7e6375c91794f9e72f62f934"` [INFO] [stdout] 2bf17986452a6b77be8ef8c22fa6f47bc308696b7e6375c91794f9e72f62f934 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/ziptree/0.1.1:/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" "+beta-2019-08-13" "test" "--frozen"` [INFO] [stdout] 6f9132bfc23c46ef9c05561928d1e9eec9a580c6f54eddc08e71fa96b9dcad30 [INFO] running `"docker" "start" "-a" "6f9132bfc23c46ef9c05561928d1e9eec9a580c6f54eddc08e71fa96b9dcad30"` [INFO] [stderr] warning: only one of `license` or `license-file` is necessary [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.04s [INFO] [stderr] Running /opt/crater/target/debug/deps/ziptree-a83ae6c9283e2ee5 [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/crater/target/debug/deps/simple-3cb1afe428abc8af [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stdout] test simple_test ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stderr] Doc-tests ziptree [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" "6f9132bfc23c46ef9c05561928d1e9eec9a580c6f54eddc08e71fa96b9dcad30"` [INFO] running `"docker" "rm" "-f" "6f9132bfc23c46ef9c05561928d1e9eec9a580c6f54eddc08e71fa96b9dcad30"` [INFO] [stdout] 6f9132bfc23c46ef9c05561928d1e9eec9a580c6f54eddc08e71fa96b9dcad30