[INFO] cloning repository https://github.com/ToshiyaAsai/minischeme
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ToshiyaAsai/minischeme" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FToshiyaAsai%2Fminischeme", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FToshiyaAsai%2Fminischeme'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4045a0f83a8515148c5da477e0c6baee03f59a14
[INFO] checking ToshiyaAsai/minischeme against master#7f5a42b073dc2bee2aa625052eb066ee07072048 for pr-78991
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FToshiyaAsai%2Fminischeme" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ToshiyaAsai/minischeme on toolchain 7f5a42b073dc2bee2aa625052eb066ee07072048
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ToshiyaAsai/minischeme
[INFO] finished tweaking git repo https://github.com/ToshiyaAsai/minischeme
[INFO] tweaked toml for git repo https://github.com/ToshiyaAsai/minischeme written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/ToshiyaAsai/minischeme already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3b98b85ef0851266bcb2912d80d5d23e4fd6ce7bf074f1d2c01cd17b1fd73f13
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3b98b85ef0851266bcb2912d80d5d23e4fd6ce7bf074f1d2c01cd17b1fd73f13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3b98b85ef0851266bcb2912d80d5d23e4fd6ce7bf074f1d2c01cd17b1fd73f13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b98b85ef0851266bcb2912d80d5d23e4fd6ce7bf074f1d2c01cd17b1fd73f13", kill_on_drop: false }`
[INFO] [stdout] 3b98b85ef0851266bcb2912d80d5d23e4fd6ce7bf074f1d2c01cd17b1fd73f13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "-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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c649270505d91f3a6c17e1e2dc7ad863ac7b59148475f60778994483d7ddf043
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c649270505d91f3a6c17e1e2dc7ad863ac7b59148475f60778994483d7ddf043", kill_on_drop: false }`
[INFO] [stderr]     Checking minischeme v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/eval.rs:25:35
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn eval(pe: &PreExpr, mut env: Env) -> Expr {
[INFO] [stdout]    |                                        ---- expected `Expr` because of return type
[INFO] [stdout] ...
[INFO] [stdout] 25 |                 Some(t) => return t,
[INFO] [stdout]    |                                   ^ expected enum `Expr`, found `&Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `minischeme`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/eval.rs:25:35
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn eval(pe: &PreExpr, mut env: Env) -> Expr {
[INFO] [stdout]    |                                        ---- expected `Expr` because of return type
[INFO] [stdout] ...
[INFO] [stdout] 25 |                 Some(t) => return t,
[INFO] [stdout]    |                                   ^ expected enum `Expr`, found `&Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "c649270505d91f3a6c17e1e2dc7ad863ac7b59148475f60778994483d7ddf043", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c649270505d91f3a6c17e1e2dc7ad863ac7b59148475f60778994483d7ddf043", kill_on_drop: false }`
[INFO] [stdout] c649270505d91f3a6c17e1e2dc7ad863ac7b59148475f60778994483d7ddf043