[INFO] cloning repository https://github.com/taka231/simply_typed_lambda_calculus_compiler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/taka231/simply_typed_lambda_calculus_compiler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftaka231%2Fsimply_typed_lambda_calculus_compiler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftaka231%2Fsimply_typed_lambda_calculus_compiler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7a46e6fe624a506587e5a7b2c2cfb36c5c0c6354
[INFO] checking taka231/simply_typed_lambda_calculus_compiler 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%2Ftaka231%2Fsimply_typed_lambda_calculus_compiler" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/taka231/simply_typed_lambda_calculus_compiler
[INFO] finished tweaking git repo https://github.com/taka231/simply_typed_lambda_calculus_compiler
[INFO] tweaked toml for git repo https://github.com/taka231/simply_typed_lambda_calculus_compiler written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/taka231/simply_typed_lambda_calculus_compiler 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/taka231/simply_typed_lambda_calculus_compiler 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] bb1f088b648c96f94294e6ea9960a425d26fe3c4ed42d8019b00798467461f5f
[INFO] running `Command { std: "docker" "start" "-a" "bb1f088b648c96f94294e6ea9960a425d26fe3c4ed42d8019b00798467461f5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bb1f088b648c96f94294e6ea9960a425d26fe3c4ed42d8019b00798467461f5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb1f088b648c96f94294e6ea9960a425d26fe3c4ed42d8019b00798467461f5f", kill_on_drop: false }`
[INFO] [stdout] bb1f088b648c96f94294e6ea9960a425d26fe3c4ed42d8019b00798467461f5f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 4e9df07427b87fb57c1d72e63cb3216d86bfbdc6970253f9796a876df17c2939
[INFO] running `Command { std: "docker" "start" "-a" "4e9df07427b87fb57c1d72e63cb3216d86bfbdc6970253f9796a876df17c2939", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.70
[INFO] [stderr]    Compiling memchr v2.6.4
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]    Compiling regex-syntax v0.8.2
[INFO] [stderr]    Compiling semver v1.0.20
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling thiserror v1.0.51
[INFO] [stderr]    Compiling unicode-segmentation v1.10.1
[INFO] [stderr]     Checking unicode-width v0.1.11
[INFO] [stderr]    Compiling aho-corasick v1.1.2
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling inkwell v0.2.0 (https://github.com/TheDan64/inkwell?branch=master#776d7871)
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]    Compiling peg-runtime v0.8.2
[INFO] [stderr]    Compiling syn v2.0.41
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]    Compiling peg-macros v0.8.2
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]    Compiling regex-automata v0.4.3
[INFO] [stderr]     Checking peg v0.8.2
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]    Compiling thiserror-impl v1.0.51
[INFO] [stderr]    Compiling inkwell_internals v0.8.0 (https://github.com/TheDan64/inkwell?branch=master#776d7871)
[INFO] [stderr]    Compiling regex v1.10.2
[INFO] [stderr]    Compiling llvm-sys v160.1.4
[INFO] [stderr]     Checking simply_typed_lambda_calculus_compiler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 43 |     program: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `simply_typed_lambda_calculus_compiler` (bin "simply_typed_lambda_calculus_compiler" test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 43 |     program: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `simply_typed_lambda_calculus_compiler` (bin "simply_typed_lambda_calculus_compiler") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "4e9df07427b87fb57c1d72e63cb3216d86bfbdc6970253f9796a876df17c2939", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e9df07427b87fb57c1d72e63cb3216d86bfbdc6970253f9796a876df17c2939", kill_on_drop: false }`
[INFO] [stdout] 4e9df07427b87fb57c1d72e63cb3216d86bfbdc6970253f9796a876df17c2939
