[INFO] fetching crate derivation_tree 0.1.0...
[INFO] testing derivation_tree-0.1.0 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-7
[INFO] extracting crate derivation_tree 0.1.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate derivation_tree 0.1.0
[INFO] finished tweaking crates.io crate derivation_tree 0.1.0
[INFO] tweaked toml for crates.io crate derivation_tree 0.1.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate derivation_tree 0.1.0 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0c4a35969dd7bd86369c1444aa05682c80aa39ffcd121af6ceee2ccfa7f7d900
[INFO] running `Command { std: "docker" "start" "-a" "0c4a35969dd7bd86369c1444aa05682c80aa39ffcd121af6ceee2ccfa7f7d900", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0c4a35969dd7bd86369c1444aa05682c80aa39ffcd121af6ceee2ccfa7f7d900", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c4a35969dd7bd86369c1444aa05682c80aa39ffcd121af6ceee2ccfa7f7d900", kill_on_drop: false }`
[INFO] [stdout] 0c4a35969dd7bd86369c1444aa05682c80aa39ffcd121af6ceee2ccfa7f7d900
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] be4ec2d529405a9285527aaa8c513b0ea222503e78c074f37c0943a14587f4db
[INFO] running `Command { std: "docker" "start" "-a" "be4ec2d529405a9285527aaa8c513b0ea222503e78c074f37c0943a14587f4db", kill_on_drop: false }`
[INFO] [stderr]    Compiling derivation_tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/derivation.rs:29:16
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn new(mut term: T, query: F) -> Self {
[INFO] [stdout]    |                ----^^^^
[INFO] [stdout]    |                |
[INFO] [stdout]    |                help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/heuristic.rs:24:21
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn apply(&self, index: usize, tree: &DerivationTree<T>) -> Range<usize> {
[INFO] [stdout]    |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tree`
[INFO] [stdout]   --> src/heuristic.rs:24:35
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn apply(&self, index: usize, tree: &DerivationTree<T>) -> Range<usize> {
[INFO] [stdout]    |                                   ^^^^ help: if this is intentional, prefix it with an underscore: `_tree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `term`
[INFO] [stdout]   --> src/tree.rs:28:24
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn push(&self, term: T, parent: usize) -> usize {
[INFO] [stdout]    |                        ^^^^ help: if this is intentional, prefix it with an underscore: `_term`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent`
[INFO] [stdout]   --> src/tree.rs:28:33
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn push(&self, term: T, parent: usize) -> usize {
[INFO] [stdout]    |                                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `heuristic` is never read
[INFO] [stdout]   --> src/derivation.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout]  6 | pub struct Derivation<F,T,H = DefaultDerivationHeuristic<T>>
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 18 |     heuristic: H,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "be4ec2d529405a9285527aaa8c513b0ea222503e78c074f37c0943a14587f4db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be4ec2d529405a9285527aaa8c513b0ea222503e78c074f37c0943a14587f4db", kill_on_drop: false }`
[INFO] [stdout] be4ec2d529405a9285527aaa8c513b0ea222503e78c074f37c0943a14587f4db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 36776f735b39d466f7da95133a8e26e264cbedeaf158f9c8e6b5c2739ede7682
[INFO] running `Command { std: "docker" "start" "-a" "36776f735b39d466f7da95133a8e26e264cbedeaf158f9c8e6b5c2739ede7682", kill_on_drop: false }`
[INFO] [stderr]    Compiling derivation_tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/derivation.rs:29:16
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn new(mut term: T, query: F) -> Self {
[INFO] [stdout]    |                ----^^^^
[INFO] [stdout]    |                |
[INFO] [stdout]    |                help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/heuristic.rs:24:21
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn apply(&self, index: usize, tree: &DerivationTree<T>) -> Range<usize> {
[INFO] [stdout]    |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tree`
[INFO] [stdout]   --> src/heuristic.rs:24:35
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn apply(&self, index: usize, tree: &DerivationTree<T>) -> Range<usize> {
[INFO] [stdout]    |                                   ^^^^ help: if this is intentional, prefix it with an underscore: `_tree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `term`
[INFO] [stdout]   --> src/tree.rs:28:24
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn push(&self, term: T, parent: usize) -> usize {
[INFO] [stdout]    |                        ^^^^ help: if this is intentional, prefix it with an underscore: `_term`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent`
[INFO] [stdout]   --> src/tree.rs:28:33
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn push(&self, term: T, parent: usize) -> usize {
[INFO] [stdout]    |                                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `heuristic` is never read
[INFO] [stdout]   --> src/derivation.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout]  6 | pub struct Derivation<F,T,H = DefaultDerivationHeuristic<T>>
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 18 |     heuristic: H,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/derivation.rs:29:16
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn new(mut term: T, query: F) -> Self {
[INFO] [stdout]    |                ----^^^^
[INFO] [stdout]    |                |
[INFO] [stdout]    |                help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/heuristic.rs:24:21
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn apply(&self, index: usize, tree: &DerivationTree<T>) -> Range<usize> {
[INFO] [stdout]    |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tree`
[INFO] [stdout]   --> src/heuristic.rs:24:35
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn apply(&self, index: usize, tree: &DerivationTree<T>) -> Range<usize> {
[INFO] [stdout]    |                                   ^^^^ help: if this is intentional, prefix it with an underscore: `_tree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `term`
[INFO] [stdout]   --> src/tree.rs:28:24
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn push(&self, term: T, parent: usize) -> usize {
[INFO] [stdout]    |                        ^^^^ help: if this is intentional, prefix it with an underscore: `_term`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent`
[INFO] [stdout]   --> src/tree.rs:28:33
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn push(&self, term: T, parent: usize) -> usize {
[INFO] [stdout]    |                                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `heuristic` is never read
[INFO] [stdout]   --> src/derivation.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout]  6 | pub struct Derivation<F,T,H = DefaultDerivationHeuristic<T>>
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 18 |     heuristic: H,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "36776f735b39d466f7da95133a8e26e264cbedeaf158f9c8e6b5c2739ede7682", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36776f735b39d466f7da95133a8e26e264cbedeaf158f9c8e6b5c2739ede7682", kill_on_drop: false }`
[INFO] [stdout] 36776f735b39d466f7da95133a8e26e264cbedeaf158f9c8e6b5c2739ede7682
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 87c39e3f8503308aa6e13f37da49704c9aba2bce3c80fa65901186eb5cbf9a80
[INFO] running `Command { std: "docker" "start" "-a" "87c39e3f8503308aa6e13f37da49704c9aba2bce3c80fa65901186eb5cbf9a80", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/derivation.rs:29:16
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub fn new(mut term: T, query: F) -> Self {
[INFO] [stderr]    |                ----^^^^
[INFO] [stderr]    |                |
[INFO] [stderr]    |                help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `index`
[INFO] [stderr]   --> src/heuristic.rs:24:21
[INFO] [stderr]    |
[INFO] [stderr] 24 |     fn apply(&self, index: usize, tree: &DerivationTree<T>) -> Range<usize> {
[INFO] [stderr]    |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tree`
[INFO] [stderr]   --> src/heuristic.rs:24:35
[INFO] [stderr]    |
[INFO] [stderr] 24 |     fn apply(&self, index: usize, tree: &DerivationTree<T>) -> Range<usize> {
[INFO] [stderr]    |                                   ^^^^ help: if this is intentional, prefix it with an underscore: `_tree`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `term`
[INFO] [stderr]   --> src/tree.rs:28:24
[INFO] [stderr]    |
[INFO] [stderr] 28 |     pub fn push(&self, term: T, parent: usize) -> usize {
[INFO] [stderr]    |                        ^^^^ help: if this is intentional, prefix it with an underscore: `_term`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parent`
[INFO] [stderr]   --> src/tree.rs:28:33
[INFO] [stderr]    |
[INFO] [stderr] 28 |     pub fn push(&self, term: T, parent: usize) -> usize {
[INFO] [stderr]    |                                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent`
[INFO] [stderr] 
[INFO] [stderr] warning: field `heuristic` is never read
[INFO] [stderr]   --> src/derivation.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr]  6 | pub struct Derivation<F,T,H = DefaultDerivationHeuristic<T>>
[INFO] [stderr]    |            ---------- field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 18 |     heuristic: H,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `derivation_tree` (lib) generated 6 warnings (run `cargo fix --lib -p derivation_tree` to apply 5 suggestions)
[INFO] [stderr] warning: `derivation_tree` (lib test) generated 6 warnings (6 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/derivation_tree-cd938ab9d243a514)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests derivation_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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "87c39e3f8503308aa6e13f37da49704c9aba2bce3c80fa65901186eb5cbf9a80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87c39e3f8503308aa6e13f37da49704c9aba2bce3c80fa65901186eb5cbf9a80", kill_on_drop: false }`
[INFO] [stdout] 87c39e3f8503308aa6e13f37da49704c9aba2bce3c80fa65901186eb5cbf9a80
