[INFO] fetching crate tree 0.4.1...
[INFO] checking tree-0.4.1 against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2
[INFO] extracting crate tree 0.4.1 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate tree 0.4.1 on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tree 0.4.1
[INFO] finished tweaking crates.io crate tree 0.4.1
[INFO] tweaked toml for crates.io crate tree 0.4.1 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 29 packages to latest compatible versions
[INFO] [stderr]       Adding aho-corasick v0.5.3 (available: v1.1.3)
[INFO] [stderr]       Adding bit-set v0.5.3 (available: v0.8.0)
[INFO] [stderr]       Adding bit-vec v0.6.3 (available: v0.8.0)
[INFO] [stderr]       Adding compare v0.0.6 (available: v0.1.0)
[INFO] [stderr]       Adding env_logger v0.3.5 (available: v0.11.5)
[INFO] [stderr]       Adding log v0.3.9 (available: v0.4.22)
[INFO] [stderr]       Adding memchr v0.1.11 (available: v2.7.4)
[INFO] [stderr]       Adding quickcheck v0.2.27 (available: v1.0.3)
[INFO] [stderr]       Adding rand v0.3.23 (available: v0.8.5)
[INFO] [stderr]       Adding rand v0.4.6 (available: v0.8.5)
[INFO] [stderr]       Adding rand_core v0.3.1 (available: v0.6.4)
[INFO] [stderr]       Adding rand_core v0.4.2 (available: v0.6.4)
[INFO] [stderr]       Adding rdrand v0.4.0 (available: v0.8.3)
[INFO] [stderr]       Adding regex v0.1.80 (available: v1.10.6)
[INFO] [stderr]       Adding regex-syntax v0.3.9 (available: v0.8.4)
[INFO] [stderr]       Adding thread-id v2.0.0 (available: v4.2.2)
[INFO] [stderr]       Adding thread_local v0.2.7 (available: v1.1.8)
[INFO] [stderr]       Adding utf8-ranges v0.1.3 (available: v1.0.5)
[INFO] [stderr]       Adding winapi v0.2.8 (available: v0.3.9)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded quickcheck v0.2.27
[INFO] [stderr]   Downloaded compare v0.0.6
[INFO] [stderr]   Downloaded ordered_iter v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b8eaca131076b21964c6feea8b339ab251f99fe212e72256ab4b6f5a855358d8
[INFO] running `Command { std: "docker" "start" "-a" "b8eaca131076b21964c6feea8b339ab251f99fe212e72256ab4b6f5a855358d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b8eaca131076b21964c6feea8b339ab251f99fe212e72256ab4b6f5a855358d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8eaca131076b21964c6feea8b339ab251f99fe212e72256ab4b6f5a855358d8", kill_on_drop: false }`
[INFO] [stdout] b8eaca131076b21964c6feea8b339ab251f99fe212e72256ab4b6f5a855358d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 930fa38f2ed3e106d00b80ed8c1bdeed68aa24a81f58e5118e69f3edbf3f616a
[INFO] running `Command { std: "docker" "start" "-a" "930fa38f2ed3e106d00b80ed8c1bdeed68aa24a81f58e5118e69f3edbf3f616a", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]     Checking utf8-ranges v0.1.3
[INFO] [stderr]     Checking regex-syntax v0.3.9
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]     Checking compare v0.0.6
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]     Checking bit-set v0.5.3
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking ordered_iter v0.1.2
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]     Checking env_logger v0.3.5
[INFO] [stderr]     Checking quickcheck v0.2.27
[INFO] [stderr]     Checking tree v0.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused macro definition: `bound`
[INFO] [stdout]    --> src/node/iter.rs:121:14
[INFO] [stdout]     |
[INFO] [stdout] 121 | macro_rules! bound {
[INFO] [stdout]     |              ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `bound`
[INFO] [stdout]    --> src/node/iter.rs:121:14
[INFO] [stdout]     |
[INFO] [stdout] 121 | macro_rules! bound {
[INFO] [stdout]     |              ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/node/test.rs:36:29
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn shrink(&self) -> Box<Iterator<Item=Self>> {
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn shrink(&self) -> Box<dyn Iterator<Item=Self>> {
[INFO] [stdout]    |                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/quickcheck.rs:14:29
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn shrink(&self) -> Box<Iterator<Item=Self>> {
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn shrink(&self) -> Box<dyn Iterator<Item=Self>> {
[INFO] [stdout]    |                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/quickcheck.rs:25:29
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn shrink(&self) -> Box<Iterator<Item=Self>> {
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn shrink(&self) -> Box<dyn Iterator<Item=Self>> {
[INFO] [stdout]    |                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/quickcheck.rs:14:29
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn shrink(&self) -> Box<Iterator<Item=Self>> {
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn shrink(&self) -> Box<dyn Iterator<Item=Self>> {
[INFO] [stdout]    |                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/quickcheck.rs:25:29
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn shrink(&self) -> Box<Iterator<Item=Self>> {
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn shrink(&self) -> Box<dyn Iterator<Item=Self>> {
[INFO] [stdout]    |                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this method takes 1 argument but 0 arguments were supplied
[INFO] [stdout]    --> src/set.rs:235:48
[INFO] [stdout]     |
[INFO] [stdout] 235 |     pub fn max(&self) -> Option<&T> { self.map.max().map(|e| e.0) }
[INFO] [stdout]     |                                                ^^^-- argument #1 of type `map::Map<T, (), C>` is missing
[INFO] [stdout]     |
[INFO] [stdout] note: method defined here
[INFO] [stdout]    --> /rustc/f609b7e0586f81fefb3523e3e17adf779ac416be/library/core/src/cmp.rs:854:8
[INFO] [stdout] help: provide the argument
[INFO] [stdout]     |
[INFO] [stdout] 235 |     pub fn max(&self) -> Option<&T> { self.map.max(/* map::Map<T, (), C> */).map(|e| e.0) }
[INFO] [stdout]     |                                                   ~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `map` found for struct `map::Map<T, (), C>` in the current scope
[INFO] [stdout]    --> src/set.rs:235:54
[INFO] [stdout]     |
[INFO] [stdout] 235 |     pub fn max(&self) -> Option<&T> { self.map.max().map(|e| e.0) }
[INFO] [stdout]     |                                                      ^^^ `map::Map<T, (), C>` is not an iterator
[INFO] [stdout]     |
[INFO] [stdout] help: call `.into_iter()` first
[INFO] [stdout]     |
[INFO] [stdout] 235 |     pub fn max(&self) -> Option<&T> { self.map.max().into_iter().map(|e| e.0) }
[INFO] [stdout]     |                                                      ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this method takes 1 argument but 0 arguments were supplied
[INFO] [stdout]    --> src/set.rs:291:48
[INFO] [stdout]     |
[INFO] [stdout] 291 |     pub fn min(&self) -> Option<&T> { self.map.min().map(|e| e.0) }
[INFO] [stdout]     |                                                ^^^-- argument #1 of type `map::Map<T, (), C>` is missing
[INFO] [stdout]     |
[INFO] [stdout] note: method defined here
[INFO] [stdout]    --> /rustc/f609b7e0586f81fefb3523e3e17adf779ac416be/library/core/src/cmp.rs:875:8
[INFO] [stdout] help: provide the argument
[INFO] [stdout]     |
[INFO] [stdout] 291 |     pub fn min(&self) -> Option<&T> { self.map.min(/* map::Map<T, (), C> */).map(|e| e.0) }
[INFO] [stdout]     |                                                   ~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `map` found for struct `map::Map<T, (), C>` in the current scope
[INFO] [stdout]    --> src/set.rs:291:54
[INFO] [stdout]     |
[INFO] [stdout] 291 |     pub fn min(&self) -> Option<&T> { self.map.min().map(|e| e.0) }
[INFO] [stdout]     |                                                      ^^^ `map::Map<T, (), C>` is not an iterator
[INFO] [stdout]     |
[INFO] [stdout] help: call `.into_iter()` first
[INFO] [stdout]     |
[INFO] [stdout] 291 |     pub fn min(&self) -> Option<&T> { self.map.min().into_iter().map(|e| e.0) }
[INFO] [stdout]     |                                                      ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this method takes 1 argument but 0 arguments were supplied
[INFO] [stdout]    --> src/set.rs:235:48
[INFO] [stdout]     |
[INFO] [stdout] 235 |     pub fn max(&self) -> Option<&T> { self.map.max().map(|e| e.0) }
[INFO] [stdout]     |                                                ^^^-- argument #1 of type `map::Map<T, (), C>` is missing
[INFO] [stdout]     |
[INFO] [stdout] note: method defined here
[INFO] [stdout]    --> /rustc/f609b7e0586f81fefb3523e3e17adf779ac416be/library/core/src/cmp.rs:854:8
[INFO] [stdout] help: provide the argument
[INFO] [stdout]     |
[INFO] [stdout] 235 |     pub fn max(&self) -> Option<&T> { self.map.max(/* map::Map<T, (), C> */).map(|e| e.0) }
[INFO] [stdout]     |                                                   ~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `map` found for struct `map::Map<T, (), C>` in the current scope
[INFO] [stdout]    --> src/set.rs:235:54
[INFO] [stdout]     |
[INFO] [stdout] 235 |     pub fn max(&self) -> Option<&T> { self.map.max().map(|e| e.0) }
[INFO] [stdout]     |                                                      ^^^ `map::Map<T, (), C>` is not an iterator
[INFO] [stdout]     |
[INFO] [stdout] help: call `.into_iter()` first
[INFO] [stdout]     |
[INFO] [stdout] 235 |     pub fn max(&self) -> Option<&T> { self.map.max().into_iter().map(|e| e.0) }
[INFO] [stdout]     |                                                      ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this method takes 1 argument but 0 arguments were supplied
[INFO] [stdout]    --> src/set.rs:291:48
[INFO] [stdout]     |
[INFO] [stdout] 291 |     pub fn min(&self) -> Option<&T> { self.map.min().map(|e| e.0) }
[INFO] [stdout]     |                                                ^^^-- argument #1 of type `map::Map<T, (), C>` is missing
[INFO] [stdout]     |
[INFO] [stdout] note: method defined here
[INFO] [stdout]    --> /rustc/f609b7e0586f81fefb3523e3e17adf779ac416be/library/core/src/cmp.rs:875:8
[INFO] [stdout] help: provide the argument
[INFO] [stdout]     |
[INFO] [stdout] 291 |     pub fn min(&self) -> Option<&T> { self.map.min(/* map::Map<T, (), C> */).map(|e| e.0) }
[INFO] [stdout]     |                                                   ~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `map` found for struct `map::Map<T, (), C>` in the current scope
[INFO] [stdout]    --> src/set.rs:291:54
[INFO] [stdout]     |
[INFO] [stdout] 291 |     pub fn min(&self) -> Option<&T> { self.map.min().map(|e| e.0) }
[INFO] [stdout]     |                                                      ^^^ `map::Map<T, (), C>` is not an iterator
[INFO] [stdout]     |
[INFO] [stdout] help: call `.into_iter()` first
[INFO] [stdout]     |
[INFO] [stdout] 291 |     pub fn min(&self) -> Option<&T> { self.map.min().into_iter().map(|e| e.0) }
[INFO] [stdout]     |                                                      ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Rng`
[INFO] [stdout]  --> src/node/test.rs:3:40
[INFO] [stdout]   |
[INFO] [stdout] 3 | use self::quickcheck::{Arbitrary, Gen, Rng, TestResult, quickcheck};
[INFO] [stdout]   |                                        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors; 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0061, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0061`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tree` (lib test) due to 5 previous errors; 5 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 4 previous errors; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0061, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0061`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tree` (lib) due to 5 previous errors; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "930fa38f2ed3e106d00b80ed8c1bdeed68aa24a81f58e5118e69f3edbf3f616a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "930fa38f2ed3e106d00b80ed8c1bdeed68aa24a81f58e5118e69f3edbf3f616a", kill_on_drop: false }`
[INFO] [stdout] 930fa38f2ed3e106d00b80ed8c1bdeed68aa24a81f58e5118e69f3edbf3f616a