[INFO] cloning repository https://github.com/vivekascoder/clob-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vivekascoder/clob-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvivekascoder%2Fclob-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvivekascoder%2Fclob-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cbddd2aae33ce25b66bf40a3292b816b1b9d834a
[INFO] building vivekascoder/clob-rs against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvivekascoder%2Fclob-rs" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vivekascoder/clob-rs on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-1-tc1/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/vivekascoder/clob-rs
[INFO] finished tweaking git repo https://github.com/vivekascoder/clob-rs
[INFO] tweaked toml for git repo https://github.com/vivekascoder/clob-rs written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/vivekascoder/clob-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2bb4c383017214eb95fa12977d670105b2cfc7ab5821bc7da58622a4b85dfe67
[INFO] running `Command { std: "docker" "start" "-a" "2bb4c383017214eb95fa12977d670105b2cfc7ab5821bc7da58622a4b85dfe67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2bb4c383017214eb95fa12977d670105b2cfc7ab5821bc7da58622a4b85dfe67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2bb4c383017214eb95fa12977d670105b2cfc7ab5821bc7da58622a4b85dfe67", kill_on_drop: false }`
[INFO] [stdout] 2bb4c383017214eb95fa12977d670105b2cfc7ab5821bc7da58622a4b85dfe67
[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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a93843c1b071640d848decc9fe9d18d89bd6dc591738429dd0eb3b6bbece388b
[INFO] running `Command { std: "docker" "start" "-a" "a93843c1b071640d848decc9fe9d18d89bd6dc591738429dd0eb3b6bbece388b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling anyhow v1.0.80
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling getrandom v0.2.12
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling uuid v1.7.0
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling clob v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Bound` and `Range`
[INFO] [stdout]  --> src/clob.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 |     ops::{Bound, Range},
[INFO] [stdout]   |           ^^^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `anyhow`
[INFO] [stdout]  --> src/clob.rs:7:14
[INFO] [stdout]   |
[INFO] [stdout] 7 | use anyhow::{anyhow, Result};
[INFO] [stdout]   |              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::btree_map::CursorMut`
[INFO] [stdout]  --> src/clob.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::collections::btree_map::CursorMut;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `any`
[INFO] [stdout]  --> src/critbit.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{any, borrow::Borrow, cell::RefCell, collections::HashMap, rc::Rc};
[INFO] [stdout]   |           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `borrow::Borrow`
[INFO] [stdout]  --> src/critbit.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{any, borrow::Borrow, cell::RefCell, collections::HashMap, rc::Rc};
[INFO] [stdout]   |                ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `children` and `is_end` are never read
[INFO] [stdout]  --> src/trie.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct TrieNode {
[INFO] [stdout]   |            -------- fields in this struct
[INFO] [stdout] 4 |     children: HashMap<String, String>,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 5 |     is_end: bool,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `root` is never read
[INFO] [stdout]  --> src/trie.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Trie {
[INFO] [stdout]   |            ---- field in this struct
[INFO] [stdout] 9 |     root: TrieNode,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/bin/benchmark.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     for i in 1..100000 {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.40s
[INFO] running `Command { std: "docker" "inspect" "a93843c1b071640d848decc9fe9d18d89bd6dc591738429dd0eb3b6bbece388b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a93843c1b071640d848decc9fe9d18d89bd6dc591738429dd0eb3b6bbece388b", kill_on_drop: false }`
[INFO] [stdout] a93843c1b071640d848decc9fe9d18d89bd6dc591738429dd0eb3b6bbece388b
[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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 009f089f1f4058140b7dd9a55f38304fd82a97b09cebe11c04ddbeb08b836fe9
[INFO] running `Command { std: "docker" "start" "-a" "009f089f1f4058140b7dd9a55f38304fd82a97b09cebe11c04ddbeb08b836fe9", kill_on_drop: false }`
[INFO] [stdout] warning: unused imports: `Bound` and `Range`
[INFO] [stdout]  --> src/clob.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 |     ops::{Bound, Range},
[INFO] [stdout]   |           ^^^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling clob v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `anyhow`
[INFO] [stdout]  --> src/clob.rs:7:14
[INFO] [stdout]   |
[INFO] [stdout] 7 | use anyhow::{anyhow, Result};
[INFO] [stdout]   |              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::btree_map::CursorMut`
[INFO] [stdout]  --> src/clob.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::collections::btree_map::CursorMut;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `any`
[INFO] [stdout]  --> src/critbit.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{any, borrow::Borrow, cell::RefCell, collections::HashMap, rc::Rc};
[INFO] [stdout]   |           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `borrow::Borrow`
[INFO] [stdout]  --> src/critbit.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{any, borrow::Borrow, cell::RefCell, collections::HashMap, rc::Rc};
[INFO] [stdout]   |                ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `children` and `is_end` are never read
[INFO] [stdout]  --> src/trie.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct TrieNode {
[INFO] [stdout]   |            -------- fields in this struct
[INFO] [stdout] 4 |     children: HashMap<String, String>,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 5 |     is_end: bool,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `root` is never read
[INFO] [stdout]  --> src/trie.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Trie {
[INFO] [stdout]   |            ---- field in this struct
[INFO] [stdout] 9 |     root: TrieNode,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/bin/benchmark.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     for i in 1..100000 {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Bound` and `Range`
[INFO] [stdout]  --> src/clob.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 |     ops::{Bound, Range},
[INFO] [stdout]   |           ^^^^^  ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `anyhow`
[INFO] [stdout]  --> src/clob.rs:7:14
[INFO] [stdout]   |
[INFO] [stdout] 7 | use anyhow::{anyhow, Result};
[INFO] [stdout]   |              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::btree_map::CursorMut`
[INFO] [stdout]  --> src/clob.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::collections::btree_map::CursorMut;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::Rng`
[INFO] [stdout]    --> src/clob.rs:152:9
[INFO] [stdout]     |
[INFO] [stdout] 152 |     use rand::Rng;
[INFO] [stdout]     |         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `any`
[INFO] [stdout]  --> src/critbit.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{any, borrow::Borrow, cell::RefCell, collections::HashMap, rc::Rc};
[INFO] [stdout]   |           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `borrow::Borrow`
[INFO] [stdout]  --> src/critbit.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{any, borrow::Borrow, cell::RefCell, collections::HashMap, rc::Rc};
[INFO] [stdout]   |                ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `children` and `is_end` are never read
[INFO] [stdout]  --> src/trie.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct TrieNode {
[INFO] [stdout]   |            -------- fields in this struct
[INFO] [stdout] 4 |     children: HashMap<String, String>,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 5 |     is_end: bool,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `root` is never read
[INFO] [stdout]  --> src/trie.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Trie {
[INFO] [stdout]   |            ---- field in this struct
[INFO] [stdout] 9 |     root: TrieNode,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.94s
[INFO] running `Command { std: "docker" "inspect" "009f089f1f4058140b7dd9a55f38304fd82a97b09cebe11c04ddbeb08b836fe9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "009f089f1f4058140b7dd9a55f38304fd82a97b09cebe11c04ddbeb08b836fe9", kill_on_drop: false }`
[INFO] [stdout] 009f089f1f4058140b7dd9a55f38304fd82a97b09cebe11c04ddbeb08b836fe9