[INFO] fetching crate ece_421_sam_cynthia_aditya_trees 0.1.1...
[INFO] checking ece_421_sam_cynthia_aditya_trees-0.1.1 against try#3d9fdbff4f377de96b3a51174e7a64086bee9a5c for pr-81477
[INFO] extracting crate ece_421_sam_cynthia_aditya_trees 0.1.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate ece_421_sam_cynthia_aditya_trees 0.1.1 on toolchain 3d9fdbff4f377de96b3a51174e7a64086bee9a5c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ece_421_sam_cynthia_aditya_trees 0.1.1
[INFO] finished tweaking crates.io crate ece_421_sam_cynthia_aditya_trees 0.1.1
[INFO] tweaked toml for crates.io crate ece_421_sam_cynthia_aditya_trees 0.1.1 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate ece_421_sam_cynthia_aditya_trees 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9fbb5e36947d8c39ec7a89117de74d28c8bde5543121f89961214f186d0628e0
[INFO] running `Command { std: "docker" "start" "-a" "9fbb5e36947d8c39ec7a89117de74d28c8bde5543121f89961214f186d0628e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9fbb5e36947d8c39ec7a89117de74d28c8bde5543121f89961214f186d0628e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9fbb5e36947d8c39ec7a89117de74d28c8bde5543121f89961214f186d0628e0", kill_on_drop: false }`
[INFO] [stdout] 9fbb5e36947d8c39ec7a89117de74d28c8bde5543121f89961214f186d0628e0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d12596d9ffe0b42484b5ff02eb4aeeb964570256fd22a764c884db86459e970a
[INFO] running `Command { std: "docker" "start" "-a" "d12596d9ffe0b42484b5ff02eb4aeeb964570256fd22a764c884db86459e970a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.90
[INFO] [stderr]    Compiling serde v1.0.124
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling syn v1.0.64
[INFO] [stderr]    Compiling serde_derive v1.0.124
[INFO] [stderr]     Checking regex-syntax v0.6.23
[INFO] [stderr]    Compiling crossbeam-utils v0.8.3
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking itertools v0.10.0
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]     Checking plotters v0.3.0
[INFO] [stderr]     Checking criterion-plot v0.4.3
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking crossbeam-epoch v0.9.3
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking regex v1.4.5
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking ece_421_sam_cynthia_aditya_trees v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `rand::seq::SliceRandom`
[INFO] [stdout]  --> src/AVLTree.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use rand::seq::SliceRandom;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Rng`, `thread_rng`
[INFO] [stdout]  --> src/AVLTree.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | use rand::{thread_rng, Rng};
[INFO] [stdout]   |            ^^^^^^^^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::seq::SliceRandom`
[INFO] [stdout]  --> src/RBTree.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rand::seq::SliceRandom;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Rng`, `thread_rng`
[INFO] [stdout]  --> src/RBTree.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rand::{thread_rng, Rng};
[INFO] [stdout]   |            ^^^^^^^^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_nodes_in_order`
[INFO] [stdout]    --> src/AVLTree.rs:439:8
[INFO] [stdout]     |
[INFO] [stdout] 439 |     fn get_nodes_in_order(&self) -> Vec<u32> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_nodes_in_order`
[INFO] [stdout]    --> src/RBTree.rs:654:8
[INFO] [stdout]     |
[INFO] [stdout] 654 |     fn get_nodes_in_order(&self) -> Vec<u32> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `AVLTree` should have a snake case name
[INFO] [stdout]  --> src/lib.rs:1:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub mod AVLTree;
[INFO] [stdout]   |         ^^^^^^^ help: convert the identifier to snake case: `avltree`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `RBTree` should have a snake case name
[INFO] [stdout]  --> src/lib.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub mod RBTree;
[INFO] [stdout]   |         ^^^^^^ help: convert the identifier to snake case: `rbtree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::seq::SliceRandom`
[INFO] [stdout]  --> src/AVLTree.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use rand::seq::SliceRandom;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Rng`, `thread_rng`
[INFO] [stdout]  --> src/AVLTree.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | use rand::{thread_rng, Rng};
[INFO] [stdout]   |            ^^^^^^^^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::seq::SliceRandom`
[INFO] [stdout]  --> src/RBTree.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rand::seq::SliceRandom;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Rng`, `thread_rng`
[INFO] [stdout]  --> src/RBTree.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rand::{thread_rng, Rng};
[INFO] [stdout]   |            ^^^^^^^^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `search`
[INFO] [stdout]    --> src/AVLTree.rs:173:12
[INFO] [stdout]     |
[INFO] [stdout] 173 |     pub fn search(&self, val: u32) -> bool {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_nodes_in_order`
[INFO] [stdout]    --> src/AVLTree.rs:439:8
[INFO] [stdout]     |
[INFO] [stdout] 439 |     fn get_nodes_in_order(&self) -> Vec<u32> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `search`
[INFO] [stdout]    --> src/RBTree.rs:353:12
[INFO] [stdout]     |
[INFO] [stdout] 353 |     pub fn search(&mut self, val: u32) -> Result<(), String> {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_nodes_in_order`
[INFO] [stdout]    --> src/RBTree.rs:654:8
[INFO] [stdout]     |
[INFO] [stdout] 654 |     fn get_nodes_in_order(&self) -> Vec<u32> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `AVLTree` should have a snake case name
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | mod AVLTree;
[INFO] [stdout]   |     ^^^^^^^ help: convert the identifier to snake case: `avltree`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `RBTree` should have a snake case name
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | mod RBTree;
[INFO] [stdout]   |     ^^^^^^ help: convert the identifier to snake case: `rbtree`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stderr]     Checking bstr v0.2.15
[INFO] [stderr]     Checking serde_cbor v0.11.1
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking criterion v0.3.4
[INFO] [stdout] error: Trailing semicolon in macro
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/criterion-0.3.4/src/macros_private.rs:19:36
[INFO] [stdout]     |
[INFO] [stdout] 19  |         try_else_return!($x, || {});
[INFO] [stdout]     |                                    ^
[INFO] [stdout]     | 
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/criterion-0.3.4/src/html/mod.rs:537:29
[INFO] [stdout]     |
[INFO] [stdout] 537 |         let mut found_ids = try_else_return!(fs::list_existing_benchmarks(&output_directory));
[INFO] [stdout]     |                             ----------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `try_else_return` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Trailing semicolon in macro
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/criterion-0.3.4/src/macros_private.rs:36:63
[INFO] [stdout]     |
[INFO] [stdout] 36  |         println!("Criterion.rs ERROR: {}", &format!($($arg)*));
[INFO] [stdout]     |                                                               ^
[INFO] [stdout]     | 
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/criterion-0.3.4/src/plot/gnuplot_backend/mod.rs:243:28
[INFO] [stdout]     |
[INFO] [stdout] 243 |                 Ok(out) => error!("Error in Gnuplot: {}", String::from_utf8_lossy(&out.stderr)),
[INFO] [stdout]     |                            -------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `error` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Trailing semicolon in macro
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/criterion-0.3.4/src/macros_private.rs:36:63
[INFO] [stdout]     |
[INFO] [stdout] 36  |         println!("Criterion.rs ERROR: {}", &format!($($arg)*));
[INFO] [stdout]     |                                                               ^
[INFO] [stdout]     | 
[INFO] [stdout]    ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/criterion-0.3.4/src/plot/gnuplot_backend/mod.rs:244:27
[INFO] [stdout]     |
[INFO] [stdout] 244 |                 Err(e) => error!("Got IO error while waiting for Gnuplot to complete: {}", e),
[INFO] [stdout]     |                           ------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `error` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `criterion`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "d12596d9ffe0b42484b5ff02eb4aeeb964570256fd22a764c884db86459e970a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d12596d9ffe0b42484b5ff02eb4aeeb964570256fd22a764c884db86459e970a", kill_on_drop: false }`
[INFO] [stdout] d12596d9ffe0b42484b5ff02eb4aeeb964570256fd22a764c884db86459e970a