[INFO] cloning repository https://github.com/marcorohn/mbsw_typechecker
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/marcorohn/mbsw_typechecker" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcorohn%2Fmbsw_typechecker", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcorohn%2Fmbsw_typechecker'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4b78e86fc6d2658ab53e3d63ee93255d21b77a65
[INFO] checking marcorohn/mbsw_typechecker against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarcorohn%2Fmbsw_typechecker" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/marcorohn/mbsw_typechecker
[INFO] finished tweaking git repo https://github.com/marcorohn/mbsw_typechecker
[INFO] tweaked toml for git repo https://github.com/marcorohn/mbsw_typechecker written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/marcorohn/mbsw_typechecker on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/marcorohn/mbsw_typechecker 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 93dd2dd3ec19066651f98621b67f832bb520a052950ffca9545ad56500386c11
[INFO] running `Command { std: "docker" "start" "-a" "93dd2dd3ec19066651f98621b67f832bb520a052950ffca9545ad56500386c11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "93dd2dd3ec19066651f98621b67f832bb520a052950ffca9545ad56500386c11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93dd2dd3ec19066651f98621b67f832bb520a052950ffca9545ad56500386c11", kill_on_drop: false }`
[INFO] [stdout] 93dd2dd3ec19066651f98621b67f832bb520a052950ffca9545ad56500386c11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 502ae252d4da71eece684a3efcdaf1a84557771c7e56c5cac3e7d24d01c5f728
[INFO] running `Command { std: "docker" "start" "-a" "502ae252d4da71eece684a3efcdaf1a84557771c7e56c5cac3e7d24d01c5f728", kill_on_drop: false }`
[INFO] [stderr]     Checking typechecker v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::expression`
[INFO] [stdout]  --> src/expression.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     use crate::expression;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Plus`
[INFO] [stdout]  --> src/main.rs:5:78
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::expression::expression::Expr::{And, EFalse, ETrue, Mult, One, Or, Plus, Zero};
[INFO] [stdout]   |                                                                              ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Debug` and `Display`
[INFO] [stdout]  --> src/main.rs:9:16
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::fmt::{Debug, Display};
[INFO] [stdout]   |                ^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::expression`
[INFO] [stdout]  --> src/expression.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     use crate::expression;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Plus`
[INFO] [stdout]  --> src/main.rs:5:78
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::expression::expression::Expr::{And, EFalse, ETrue, Mult, One, Or, Plus, Zero};
[INFO] [stdout]   |                                                                              ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Debug` and `Display`
[INFO] [stdout]  --> src/main.rs:9:16
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::fmt::{Debug, Display};
[INFO] [stdout]   |                ^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e2`
[INFO] [stdout]   --> src/typecheck.rs:68:28
[INFO] [stdout]    |
[INFO] [stdout] 68 |             Expr::Mult(e1, e2) => {
[INFO] [stdout]    |                            ^^ help: if this is intentional, prefix it with an underscore: `_e2`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `eval_t` is never used
[INFO] [stdout]   --> src/typecheck.rs:54:12
[INFO] [stdout]    |
[INFO] [stdout] 54 |     pub fn eval_t(expr: &Expr) -> Result<Either<i32, bool>, String> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Either` is never used
[INFO] [stdout]  --> src/util.rs:7:14
[INFO] [stdout]   |
[INFO] [stdout] 7 |     pub enum Either<A, B> {
[INFO] [stdout]   |              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/typecheck.rs:17:26
[INFO] [stdout]    |
[INFO] [stdout] 17 |                   _ => Err("Plus expression expects int types on both sides! "
[INFO] [stdout]    |  __________________________^
[INFO] [stdout] 18 | |                     .parse()
[INFO] [stdout]    | |____________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/typecheck.rs:26:30
[INFO] [stdout]    |
[INFO] [stdout] 26 |                       _ => Err("Mult expression expects int types on both sides! "
[INFO] [stdout]    |  ______________________________^
[INFO] [stdout] 27 | |                         .parse()
[INFO] [stdout]    | |________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/typecheck.rs:36:30
[INFO] [stdout]    |
[INFO] [stdout] 36 |                       _ => Err("Or expression expects bool types on both sides! "
[INFO] [stdout]    |  ______________________________^
[INFO] [stdout] 37 | |                         .parse()
[INFO] [stdout]    | |________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/typecheck.rs:46:30
[INFO] [stdout]    |
[INFO] [stdout] 46 |                       _ => Err("And expression expects bool types on both sides! "
[INFO] [stdout]    |  ______________________________^
[INFO] [stdout] 47 | |                         .parse()
[INFO] [stdout]    | |________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/typecheck.rs:65:30
[INFO] [stdout]    |
[INFO] [stdout] 65 |                     _ => Err("Incompatible Types!".parse().unwrap()),
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/typecheck.rs:73:30
[INFO] [stdout]    |
[INFO] [stdout] 73 |                     _ => Err("Incompatible Types!".parse().unwrap()),
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/typecheck.rs:81:30
[INFO] [stdout]    |
[INFO] [stdout] 81 |                     _ => Err("Incompatible Types!".parse().unwrap()),
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/typecheck.rs:90:30
[INFO] [stdout]    |
[INFO] [stdout] 90 |                     _ => Err("Incompatible Types!".parse().unwrap()),
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `typechecker` (bin "typechecker" test) due to 8 previous errors; 6 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused variable: `e2`
[INFO] [stdout]   --> src/typecheck.rs:68:28
[INFO] [stdout]    |
[INFO] [stdout] 68 |             Expr::Mult(e1, e2) => {
[INFO] [stdout]    |                            ^^ help: if this is intentional, prefix it with an underscore: `_e2`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `eval_t` is never used
[INFO] [stdout]   --> src/typecheck.rs:54:12
[INFO] [stdout]    |
[INFO] [stdout] 54 |     pub fn eval_t(expr: &Expr) -> Result<Either<i32, bool>, String> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Either` is never used
[INFO] [stdout]  --> src/util.rs:7:14
[INFO] [stdout]   |
[INFO] [stdout] 7 |     pub enum Either<A, B> {
[INFO] [stdout]   |              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/typecheck.rs:17:26
[INFO] [stdout]    |
[INFO] [stdout] 17 |                   _ => Err("Plus expression expects int types on both sides! "
[INFO] [stdout]    |  __________________________^
[INFO] [stdout] 18 | |                     .parse()
[INFO] [stdout]    | |____________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/typecheck.rs:26:30
[INFO] [stdout]    |
[INFO] [stdout] 26 |                       _ => Err("Mult expression expects int types on both sides! "
[INFO] [stdout]    |  ______________________________^
[INFO] [stdout] 27 | |                         .parse()
[INFO] [stdout]    | |________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/typecheck.rs:36:30
[INFO] [stdout]    |
[INFO] [stdout] 36 |                       _ => Err("Or expression expects bool types on both sides! "
[INFO] [stdout]    |  ______________________________^
[INFO] [stdout] 37 | |                         .parse()
[INFO] [stdout]    | |________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/typecheck.rs:46:30
[INFO] [stdout]    |
[INFO] [stdout] 46 |                       _ => Err("And expression expects bool types on both sides! "
[INFO] [stdout]    |  ______________________________^
[INFO] [stdout] 47 | |                         .parse()
[INFO] [stdout]    | |________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/typecheck.rs:65:30
[INFO] [stdout]    |
[INFO] [stdout] 65 |                     _ => Err("Incompatible Types!".parse().unwrap()),
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/typecheck.rs:73:30
[INFO] [stdout]    |
[INFO] [stdout] 73 |                     _ => Err("Incompatible Types!".parse().unwrap()),
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/typecheck.rs:81:30
[INFO] [stdout]    |
[INFO] [stdout] 81 |                     _ => Err("Incompatible Types!".parse().unwrap()),
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/typecheck.rs:90:30
[INFO] [stdout]    |
[INFO] [stdout] 90 |                     _ => Err("Incompatible Types!".parse().unwrap()),
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `typechecker` (bin "typechecker") due to 8 previous errors; 6 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "502ae252d4da71eece684a3efcdaf1a84557771c7e56c5cac3e7d24d01c5f728", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "502ae252d4da71eece684a3efcdaf1a84557771c7e56c5cac3e7d24d01c5f728", kill_on_drop: false }`
[INFO] [stdout] 502ae252d4da71eece684a3efcdaf1a84557771c7e56c5cac3e7d24d01c5f728
