[INFO] cloning repository https://github.com/AnselmKoch/rustcalculator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AnselmKoch/rustcalculator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAnselmKoch%2Frustcalculator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAnselmKoch%2Frustcalculator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a923424dcf8f2e316bb494d93b765e01ba518530
[INFO] building AnselmKoch/rustcalculator 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%2FAnselmKoch%2Frustcalculator" "/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/AnselmKoch/rustcalculator 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/AnselmKoch/rustcalculator
[INFO] finished tweaking git repo https://github.com/AnselmKoch/rustcalculator
[INFO] tweaked toml for git repo https://github.com/AnselmKoch/rustcalculator written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/AnselmKoch/rustcalculator 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] 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] b477536551f8d13f33ebe9d3b4972cc27015330eb5edb46603d4bc8ddb600adb
[INFO] running `Command { std: "docker" "start" "-a" "b477536551f8d13f33ebe9d3b4972cc27015330eb5edb46603d4bc8ddb600adb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b477536551f8d13f33ebe9d3b4972cc27015330eb5edb46603d4bc8ddb600adb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b477536551f8d13f33ebe9d3b4972cc27015330eb5edb46603d4bc8ddb600adb", kill_on_drop: false }`
[INFO] [stdout] b477536551f8d13f33ebe9d3b4972cc27015330eb5edb46603d4bc8ddb600adb
[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] bbb89d8ab857557fc0b2be39c34f2dbdcb85ee596877a82acbeef363ffbe5436
[INFO] running `Command { std: "docker" "start" "-a" "bbb89d8ab857557fc0b2be39c34f2dbdcb85ee596877a82acbeef363ffbe5436", kill_on_drop: false }`
[INFO] [stderr]    Compiling calculator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: denote infinite loops with `loop { ... }`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     while true {
[INFO] [stdout]   |     ^^^^^^^^^^ help: use `loop`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(while_true)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parsed_float`
[INFO] [stdout]    --> src/calculator.rs:178:16
[INFO] [stdout]     |
[INFO] [stdout] 178 |             Ok(parsed_float) => {
[INFO] [stdout]     |                ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parsed_float`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `error`
[INFO] [stdout]    --> src/calculator.rs:181:17
[INFO] [stdout]     |
[INFO] [stdout] 181 |             Err(error) => {
[INFO] [stdout]     |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/calculation_interpreter.rs:51:13
[INFO] [stdout]    |
[INFO] [stdout] 51 |         for i in 0..closing_bracket_index + 1- opening_bracket_index {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `ElementType` is more private than the item `CalculationElement::element_type`
[INFO] [stdout]    --> src/calculator.rs:137:9
[INFO] [stdout]     |
[INFO] [stdout] 137 |         pub element_type: ElementType,
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ field `CalculationElement::element_type` is reachable at visibility `pub(crate)`
[INFO] [stdout]     |
[INFO] [stdout] note: but type `ElementType` is only usable at visibility `pub(self)`
[INFO] [stdout]    --> src/calculator.rs:150:5
[INFO] [stdout]     |
[INFO] [stdout] 150 |     enum ElementType {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `ElementType` is more private than the item `CalculationElement::new`
[INFO] [stdout]    --> src/calculator.rs:142:9
[INFO] [stdout]     |
[INFO] [stdout] 142 |         pub fn new(element_type: ElementType, char: String) -> CalculationElement {
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ associated function `CalculationElement::new` is reachable at visibility `pub(crate)`
[INFO] [stdout]     |
[INFO] [stdout] note: but type `ElementType` is only usable at visibility `pub(self)`
[INFO] [stdout]    --> src/calculator.rs:150:5
[INFO] [stdout]     |
[INFO] [stdout] 150 |     enum ElementType {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_string` is never used
[INFO] [stdout]   --> src/calculator.rs:17:16
[INFO] [stdout]    |
[INFO] [stdout] 10 |     impl<'a> CalculationPart<'a> {
[INFO] [stdout]    |     ---------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 17 |         pub fn to_string(&self) -> String {
[INFO] [stdout]    |                ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.17s
[INFO] running `Command { std: "docker" "inspect" "bbb89d8ab857557fc0b2be39c34f2dbdcb85ee596877a82acbeef363ffbe5436", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbb89d8ab857557fc0b2be39c34f2dbdcb85ee596877a82acbeef363ffbe5436", kill_on_drop: false }`
[INFO] [stdout] bbb89d8ab857557fc0b2be39c34f2dbdcb85ee596877a82acbeef363ffbe5436
[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] 8bf0deebc59a7afe1f7cc7f9e6d88564535e93cc2a98091dc0de558976b94b1b
[INFO] running `Command { std: "docker" "start" "-a" "8bf0deebc59a7afe1f7cc7f9e6d88564535e93cc2a98091dc0de558976b94b1b", kill_on_drop: false }`
[INFO] [stderr]    Compiling calculator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: denote infinite loops with `loop { ... }`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     while true {
[INFO] [stdout]   |     ^^^^^^^^^^ help: use `loop`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(while_true)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parsed_float`
[INFO] [stdout]    --> src/calculator.rs:178:16
[INFO] [stdout]     |
[INFO] [stdout] 178 |             Ok(parsed_float) => {
[INFO] [stdout]     |                ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parsed_float`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `error`
[INFO] [stdout]    --> src/calculator.rs:181:17
[INFO] [stdout]     |
[INFO] [stdout] 181 |             Err(error) => {
[INFO] [stdout]     |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/calculation_interpreter.rs:51:13
[INFO] [stdout]    |
[INFO] [stdout] 51 |         for i in 0..closing_bracket_index + 1- opening_bracket_index {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `ElementType` is more private than the item `CalculationElement::element_type`
[INFO] [stdout]    --> src/calculator.rs:137:9
[INFO] [stdout]     |
[INFO] [stdout] 137 |         pub element_type: ElementType,
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ field `CalculationElement::element_type` is reachable at visibility `pub(crate)`
[INFO] [stdout]     |
[INFO] [stdout] note: but type `ElementType` is only usable at visibility `pub(self)`
[INFO] [stdout]    --> src/calculator.rs:150:5
[INFO] [stdout]     |
[INFO] [stdout] 150 |     enum ElementType {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `ElementType` is more private than the item `CalculationElement::new`
[INFO] [stdout]    --> src/calculator.rs:142:9
[INFO] [stdout]     |
[INFO] [stdout] 142 |         pub fn new(element_type: ElementType, char: String) -> CalculationElement {
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ associated function `CalculationElement::new` is reachable at visibility `pub(crate)`
[INFO] [stdout]     |
[INFO] [stdout] note: but type `ElementType` is only usable at visibility `pub(self)`
[INFO] [stdout]    --> src/calculator.rs:150:5
[INFO] [stdout]     |
[INFO] [stdout] 150 |     enum ElementType {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_string` is never used
[INFO] [stdout]   --> src/calculator.rs:17:16
[INFO] [stdout]    |
[INFO] [stdout] 10 |     impl<'a> CalculationPart<'a> {
[INFO] [stdout]    |     ---------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 17 |         pub fn to_string(&self) -> String {
[INFO] [stdout]    |                ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] running `Command { std: "docker" "inspect" "8bf0deebc59a7afe1f7cc7f9e6d88564535e93cc2a98091dc0de558976b94b1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8bf0deebc59a7afe1f7cc7f9e6d88564535e93cc2a98091dc0de558976b94b1b", kill_on_drop: false }`
[INFO] [stdout] 8bf0deebc59a7afe1f7cc7f9e6d88564535e93cc2a98091dc0de558976b94b1b