[INFO] cloning repository https://github.com/kn0w-n0thing/two-week-script-by-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kn0w-n0thing/two-week-script-by-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkn0w-n0thing%2Ftwo-week-script-by-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkn0w-n0thing%2Ftwo-week-script-by-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 37280c84129f923fab0ef575516d95cde4bbf5a6
[INFO] building kn0w-n0thing/two-week-script-by-rust 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%2Fkn0w-n0thing%2Ftwo-week-script-by-rust" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kn0w-n0thing/two-week-script-by-rust 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] started tweaking git repo https://github.com/kn0w-n0thing/two-week-script-by-rust
[INFO] finished tweaking git repo https://github.com/kn0w-n0thing/two-week-script-by-rust
[INFO] tweaked toml for git repo https://github.com/kn0w-n0thing/two-week-script-by-rust written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/kn0w-n0thing/two-week-script-by-rust 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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded stringreader v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 1cea631424581e86d8fd317499ce65e7c54cd643a04ea8a86cf1bb4d3f9b7950
[INFO] running `Command { std: "docker" "start" "-a" "1cea631424581e86d8fd317499ce65e7c54cd643a04ea8a86cf1bb4d3f9b7950", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1cea631424581e86d8fd317499ce65e7c54cd643a04ea8a86cf1bb4d3f9b7950", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1cea631424581e86d8fd317499ce65e7c54cd643a04ea8a86cf1bb4d3f9b7950", kill_on_drop: false }`
[INFO] [stdout] 1cea631424581e86d8fd317499ce65e7c54cd643a04ea8a86cf1bb4d3f9b7950
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 35de5a7858a633b06165db981897be485d2501be8a2c5fae5202dec1651e467d
[INFO] running `Command { std: "docker" "start" "-a" "35de5a7858a633b06165db981897be485d2501be8a2c5fae5202dec1651e467d", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling regex-syntax v0.6.28
[INFO] [stderr]    Compiling stringreader v0.1.1
[INFO] [stderr]    Compiling aho-corasick v0.7.20
[INFO] [stderr]    Compiling regex v1.7.1
[INFO] [stderr]    Compiling two-week-script v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Formatter`
[INFO] [stdout]  --> src/lexer.rs:2:23
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fmt::{Debug, Formatter};
[INFO] [stdout]   |                       ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `TOKEN_REG_STR` is never used
[INFO] [stdout]  --> src/lexer.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | const TOKEN_REG_STR: &str = "\\s*((//.*)|([0-9]+)|(\"(\\\\\"|\\\\\\\\|\\\\n|[^\"])*\")|[A-Z_a-z][A-Z_a-z0-9]*|==|<=|>=|&&|\\|\\||[[:punct...
[INFO] [stdout]   |       ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `EOF_ERR_STR` is never used
[INFO] [stdout]  --> src/lexer.rs:9:7
[INFO] [stdout]   |
[INFO] [stdout] 9 | const EOF_ERR_STR: &str = "Already reach EOF!";
[INFO] [stdout]   |       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Lexer` is never constructed
[INFO] [stdout]   --> src/lexer.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Lexer<R: Read> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `get_token_regex`, `new`, `read`, `peek`, `fill_queue`, and `read_line` are never used
[INFO] [stdout]   --> src/lexer.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl<R: Read> Lexer<R> {
[INFO] [stdout]    | ---------------------- associated items in this implementation
[INFO] [stdout] 19 |     #[inline]
[INFO] [stdout] 20 |     fn get_token_regex() -> Regex {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 24 |     pub fn new(reader: BufReader<R>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 33 |     pub fn read(&mut self) -> Result<Token, String> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 42 |     pub fn peek(&mut self, i: usize) -> Result<&Token, String> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     fn fill_queue(&mut self, i: usize) -> Result<bool, String> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 62 |     fn read_line(&mut self) -> Result<(), String> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `IDENTIFIER`, `NUMBER`, `STRING`, `EOL`, and `EOF` are never constructed
[INFO] [stdout]    --> src/lexer.rs:108:5
[INFO] [stdout]     |
[INFO] [stdout] 107 | pub enum Token {
[INFO] [stdout]     |          ----- variants in this enum
[INFO] [stdout] 108 |     IDENTIFIER { token_base: TokenBase },
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] 109 |     NUMBER { token_base: TokenBase, number: i32 },
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 110 |     STRING { token_base: TokenBase },
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 111 |     EOL { token_base: TokenBase },
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 112 |     EOF { token_base: TokenBase },
[INFO] [stdout]     |     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Token` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_text`, `get_line_number`, and `get_number` are never used
[INFO] [stdout]    --> src/lexer.rs:116:12
[INFO] [stdout]     |
[INFO] [stdout] 115 | impl Token {
[INFO] [stdout]     | ---------- methods in this implementation
[INFO] [stdout] 116 |     pub fn get_text(&self) -> String {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 126 |     pub fn get_line_number(&self) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 136 |     pub fn get_number(&self) -> Result<&i32, String> {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `LEAF` and `LIST` are never constructed
[INFO] [stdout]  --> src/ast.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub enum ASTree {
[INFO] [stdout]   |          ------ variants in this enum
[INFO] [stdout] 7 |     LEAF { token: Token },
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 8 |     LIST { token_list: LinkedList<Token> },
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `ASTree` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `children_number`, `children`, `location`, and `get_location_from_token` are never used
[INFO] [stdout]   --> src/ast.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl ASTree {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 23 |     pub fn children_number(&self) -> usize {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 34 |     pub fn children(&self) -> impl Iterator<Item=&Token> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub fn location(&self) -> String {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |     pub fn get_location_from_token(token: &Token) -> String {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.06s
[INFO] running `Command { std: "docker" "inspect" "35de5a7858a633b06165db981897be485d2501be8a2c5fae5202dec1651e467d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35de5a7858a633b06165db981897be485d2501be8a2c5fae5202dec1651e467d", kill_on_drop: false }`
[INFO] [stdout] 35de5a7858a633b06165db981897be485d2501be8a2c5fae5202dec1651e467d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 387a5cc16e02f56e2ccfd4b35cc6230767ae62472b8e422a7c1650a410a070da
[INFO] running `Command { std: "docker" "start" "-a" "387a5cc16e02f56e2ccfd4b35cc6230767ae62472b8e422a7c1650a410a070da", kill_on_drop: false }`
[INFO] [stderr]    Compiling two-week-script v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Formatter`
[INFO] [stdout]  --> src/lexer.rs:2:23
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fmt::{Debug, Formatter};
[INFO] [stdout]   |                       ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::os::unix::raw::time_t`
[INFO] [stdout]   --> src/ast.rs:76:9
[INFO] [stdout]    |
[INFO] [stdout] 76 |     use std::os::unix::raw::time_t;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `regex::internal::Input`
[INFO] [stdout]   --> src/ast.rs:77:9
[INFO] [stdout]    |
[INFO] [stdout] 77 |     use regex::internal::Input;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated type alias `std::os::unix::raw::time_t`: these type aliases are no longer supported by the standard library, the `libc` crate on crates.io should be used instead for the correct definitions
[INFO] [stdout]   --> src/ast.rs:76:29
[INFO] [stdout]    |
[INFO] [stdout] 76 |     use std::os::unix::raw::time_t;
[INFO] [stdout]    |                             ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_text`, `get_line_number`, and `get_number` are never used
[INFO] [stdout]    --> src/lexer.rs:116:12
[INFO] [stdout]     |
[INFO] [stdout] 115 | impl Token {
[INFO] [stdout]     | ---------- methods in this implementation
[INFO] [stdout] 116 |     pub fn get_text(&self) -> String {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 126 |     pub fn get_line_number(&self) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 136 |     pub fn get_number(&self) -> Result<&i32, String> {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `token` is never read
[INFO] [stdout]  --> src/ast.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 |     LEAF { token: Token },
[INFO] [stdout]   |     ----   ^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `ASTree` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `LIST` is never constructed
[INFO] [stdout]  --> src/ast.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub enum ASTree {
[INFO] [stdout]   |          ------ variant in this enum
[INFO] [stdout] 7 |     LEAF { token: Token },
[INFO] [stdout] 8 |     LIST { token_list: LinkedList<Token> },
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `ASTree` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `location` and `get_location_from_token` are never used
[INFO] [stdout]   --> src/ast.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl ASTree {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub fn location(&self) -> String {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |     pub fn get_location_from_token(token: &Token) -> String {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ASTList` is never used
[INFO] [stdout]   --> src/ast.rs:98:8
[INFO] [stdout]    |
[INFO] [stdout] 98 |     fn ASTList() -> () {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ASTLeaf` should have a snake case name
[INFO] [stdout]   --> src/ast.rs:87:8
[INFO] [stdout]    |
[INFO] [stdout] 87 |     fn ASTLeaf() -> () {
[INFO] [stdout]    |        ^^^^^^^ help: convert the identifier to snake case: `astleaf`
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/ast.rs:86:12
[INFO] [stdout]    |
[INFO] [stdout] 86 |     #[warn(non_snake_case)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ASTList` should have a snake case name
[INFO] [stdout]   --> src/ast.rs:98:8
[INFO] [stdout]    |
[INFO] [stdout] 98 |     fn ASTList() -> () {
[INFO] [stdout]    |        ^^^^^^^ help: convert the identifier to snake case: `astlist`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `Command { std: "docker" "inspect" "387a5cc16e02f56e2ccfd4b35cc6230767ae62472b8e422a7c1650a410a070da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "387a5cc16e02f56e2ccfd4b35cc6230767ae62472b8e422a7c1650a410a070da", kill_on_drop: false }`
[INFO] [stdout] 387a5cc16e02f56e2ccfd4b35cc6230767ae62472b8e422a7c1650a410a070da