[INFO] cloning repository https://github.com/shhac/env-gen
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/shhac/env-gen" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshhac%2Fenv-gen", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshhac%2Fenv-gen'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 043da9bc420448cba3d6b26c62c76d7d2efa9d0e
[INFO] checking shhac/env-gen against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshhac%2Fenv-gen" "/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/shhac/env-gen on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/shhac/env-gen
[INFO] finished tweaking git repo https://github.com/shhac/env-gen
[INFO] tweaked toml for git repo https://github.com/shhac/env-gen written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/shhac/env-gen already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded aho-corasick v0.6.10
[INFO] [stderr]   Downloaded rand_jitter v0.1.3
[INFO] [stderr]   Downloaded owning_ref v0.4.0
[INFO] [stderr]   Downloaded smallvec v0.6.9
[INFO] [stderr]   Downloaded atty v0.2.11
[INFO] [stderr]   Downloaded termion v1.5.1
[INFO] [stderr]   Downloaded lazy_static v1.3.0
[INFO] [stderr]   Downloaded rand_core v0.4.0
[INFO] [stderr]   Downloaded autocfg v0.1.2
[INFO] [stderr]   Downloaded parking_lot_core v0.4.0
[INFO] [stderr]   Downloaded lock_api v0.1.5
[INFO] [stderr]   Downloaded rand v0.4.6
[INFO] [stderr]   Downloaded regex-syntax v0.6.5
[INFO] [stderr]   Downloaded termios v0.3.1
[INFO] [stderr]   Downloaded parking_lot v0.7.1
[INFO] [stderr]   Downloaded ucd-util v0.1.3
[INFO] [stderr]   Downloaded regex v1.1.2
[INFO] [stderr]   Downloaded yaml-rust v0.4.3
[INFO] [stderr]   Downloaded console v0.7.5
[INFO] [stderr]   Downloaded redox_syscall v0.1.51
[INFO] [stderr]   Downloaded rand v0.3.23
[INFO] [stderr]   Downloaded libc v0.2.50
[INFO] [stderr]   Downloaded clicolors-control v1.0.0
[INFO] [stderr]   Downloaded encode_unicode v0.3.5
[INFO] [stderr]   Downloaded utf8-ranges v1.0.2
[INFO] [stderr]   Downloaded memchr v2.2.0
[INFO] [stderr]   Downloaded dialoguer v0.3.0
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 39c6803f35973e2330897c209a5102d15359baa25adb577f5f08b0f37cd4868d
[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" "39c6803f35973e2330897c209a5102d15359baa25adb577f5f08b0f37cd4868d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "39c6803f35973e2330897c209a5102d15359baa25adb577f5f08b0f37cd4868d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39c6803f35973e2330897c209a5102d15359baa25adb577f5f08b0f37cd4868d", kill_on_drop: false }`
[INFO] [stdout] 39c6803f35973e2330897c209a5102d15359baa25adb577f5f08b0f37cd4868d
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3798a3691185ca8a6ab76a4f52b2d5762b9fcd349cd3af61ced4179652892e6f
[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" "3798a3691185ca8a6ab76a4f52b2d5762b9fcd349cd3af61ced4179652892e6f", kill_on_drop: false }`
[INFO] [stderr]     Checking smallvec v0.6.9
[INFO] [stderr]     Checking regex-syntax v0.6.5
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking termios v0.3.1
[INFO] [stderr]     Checking clicolors-control v1.0.0
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking tempfile v2.2.0
[INFO] [stderr]     Checking regex v1.1.2
[INFO] [stderr]     Checking console v0.7.5
[INFO] [stderr]     Checking dialoguer v0.3.0
[INFO] [stderr]     Checking env-gen v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `super::question`
[INFO] [stdout]  --> src/ask.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use super::question;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^ no `question` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `super::question`
[INFO] [stdout]  --> src/yaml.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use super::question;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^ no `question` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around pattern
[INFO] [stdout]   --> src/yaml.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |     for (a) in v["answers"] {
[INFO] [stdout]    |         ^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `super::question`
[INFO] [stdout]  --> src/ask.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use super::question;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^ no `question` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `super::question`
[INFO] [stdout]  --> src/yaml.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use super::question;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^ no `question` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around pattern
[INFO] [stdout]   --> src/yaml.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |     for (a) in v["answers"] {
[INFO] [stdout]    |         ^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `&Yaml` is not an iterator
[INFO] [stdout]   --> src/yaml.rs:28:17
[INFO] [stdout]    |
[INFO] [stdout] 28 |   for (k, v) in doc {
[INFO] [stdout]    |                 ^^^ `&Yaml` is not an iterator
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `Iterator` is not implemented for `&Yaml`
[INFO] [stdout]    = note: required because of the requirements on the impl of `IntoIterator` for `&Yaml`
[INFO] [stdout]    = note: required by `into_iter`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/yaml.rs:54:25
[INFO] [stdout]    |
[INFO] [stdout] 54 |   return dump_questions(&y);
[INFO] [stdout]    |                         ^^ expected enum `Yaml`, found struct `Vec`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected reference `&Yaml`
[INFO] [stdout]               found reference `&Vec<Yaml>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0308, E0432.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `env-gen`
[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[E0277]: `&Yaml` is not an iterator
[INFO] [stdout]   --> src/yaml.rs:28:17
[INFO] [stdout]    |
[INFO] [stdout] 28 |   for (k, v) in doc {
[INFO] [stdout]    |                 ^^^ `&Yaml` is not an iterator
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `Iterator` is not implemented for `&Yaml`
[INFO] [stdout]    = note: required because of the requirements on the impl of `IntoIterator` for `&Yaml`
[INFO] [stdout]    = note: required by `into_iter`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/yaml.rs:54:25
[INFO] [stdout]    |
[INFO] [stdout] 54 |   return dump_questions(&y);
[INFO] [stdout]    |                         ^^ expected enum `Yaml`, found struct `Vec`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected reference `&Yaml`
[INFO] [stdout]               found reference `&Vec<Yaml>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0308, E0432.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "3798a3691185ca8a6ab76a4f52b2d5762b9fcd349cd3af61ced4179652892e6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3798a3691185ca8a6ab76a4f52b2d5762b9fcd349cd3af61ced4179652892e6f", kill_on_drop: false }`
[INFO] [stdout] 3798a3691185ca8a6ab76a4f52b2d5762b9fcd349cd3af61ced4179652892e6f