[INFO] fetching crate hashtree 0.4.2...
[INFO] testing hashtree-0.4.2 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate hashtree 0.4.2 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate hashtree 0.4.2
[INFO] finished tweaking crates.io crate hashtree 0.4.2
[INFO] tweaked toml for crates.io crate hashtree 0.4.2 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate hashtree 0.4.2 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 11 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e7bbc41a2e705b8a1d38ca017b0f63915c828ffe1c2c98ac08b1d93ca4a79fc6
[INFO] running `Command { std: "docker" "start" "-a" "e7bbc41a2e705b8a1d38ca017b0f63915c828ffe1c2c98ac08b1d93ca4a79fc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e7bbc41a2e705b8a1d38ca017b0f63915c828ffe1c2c98ac08b1d93ca4a79fc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7bbc41a2e705b8a1d38ca017b0f63915c828ffe1c2c98ac08b1d93ca4a79fc6", kill_on_drop: false }`
[INFO] [stdout] e7bbc41a2e705b8a1d38ca017b0f63915c828ffe1c2c98ac08b1d93ca4a79fc6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f5936ef962467fa175638bcb6016a5455664def262daf77f28ddc84a420dd43d
[INFO] running `Command { std: "docker" "start" "-a" "f5936ef962467fa175638bcb6016a5455664def262daf77f28ddc84a420dd43d", kill_on_drop: false }`
[INFO] [stderr]    Compiling hashtree v0.4.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]    --> src/tree.rs:124:39
[INFO] [stdout]     |
[INFO] [stdout] 124 |     pub fn insert<R: Read>(&mut self, data: &mut R) {
[INFO] [stdout]     |                                       ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "f5936ef962467fa175638bcb6016a5455664def262daf77f28ddc84a420dd43d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5936ef962467fa175638bcb6016a5455664def262daf77f28ddc84a420dd43d", kill_on_drop: false }`
[INFO] [stdout] f5936ef962467fa175638bcb6016a5455664def262daf77f28ddc84a420dd43d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 90c97380eb9b5abf84ca52ec9805eccea031681a130d2d648e9aeddecbecb07d
[INFO] running `Command { std: "docker" "start" "-a" "90c97380eb9b5abf84ca52ec9805eccea031681a130d2d648e9aeddecbecb07d", kill_on_drop: false }`
[INFO] [stderr]    Compiling hashtree v0.4.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]    --> src/tree.rs:124:39
[INFO] [stdout]     |
[INFO] [stdout] 124 |     pub fn insert<R: Read>(&mut self, data: &mut R) {
[INFO] [stdout]     |                                       ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]    --> src/tree.rs:124:39
[INFO] [stdout]     |
[INFO] [stdout] 124 |     pub fn insert<R: Read>(&mut self, data: &mut R) {
[INFO] [stdout]     |                                       ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `Command { std: "docker" "inspect" "90c97380eb9b5abf84ca52ec9805eccea031681a130d2d648e9aeddecbecb07d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90c97380eb9b5abf84ca52ec9805eccea031681a130d2d648e9aeddecbecb07d", kill_on_drop: false }`
[INFO] [stdout] 90c97380eb9b5abf84ca52ec9805eccea031681a130d2d648e9aeddecbecb07d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6de893f8683a394925ef0b18d36a353c6dab50fadfb7b5be89ff06d3beca2d22
[INFO] running `Command { std: "docker" "start" "-a" "6de893f8683a394925ef0b18d36a353c6dab50fadfb7b5be89ff06d3beca2d22", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `data`
[INFO] [stderr]    --> src/tree.rs:124:39
[INFO] [stderr]     |
[INFO] [stderr] 124 |     pub fn insert<R: Read>(&mut self, data: &mut R) {
[INFO] [stderr]     |                                       ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `hashtree` (lib) generated 1 warning (run `cargo fix --lib -p hashtree` to apply 1 suggestion)
[INFO] [stderr] warning: `hashtree` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/hashtree-a91acd1aa5f166d7)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::one_byte_clone_compare ... ok
[INFO] [stdout] test tests::one_byte_block_size ... ok
[INFO] [stdout] test tests::odd_block_count ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests hashtree
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/tree.rs - tree::HashTree::new (line 36) ... ok
[INFO] [stdout] test src/tree.rs - tree::HashTree::is_empty (line 138) ... ok
[INFO] [stdout] test src/tree.rs - tree::HashTree::from_data (line 58) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.29s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6de893f8683a394925ef0b18d36a353c6dab50fadfb7b5be89ff06d3beca2d22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6de893f8683a394925ef0b18d36a353c6dab50fadfb7b5be89ff06d3beca2d22", kill_on_drop: false }`
[INFO] [stdout] 6de893f8683a394925ef0b18d36a353c6dab50fadfb7b5be89ff06d3beca2d22