[INFO] fetching crate rdg 0.1.1...
[INFO] checking rdg-0.1.1 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate rdg 0.1.1 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate rdg 0.1.1 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rdg 0.1.1
[INFO] finished tweaking crates.io crate rdg 0.1.1
[INFO] tweaked toml for crates.io crate rdg 0.1.1 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate rdg 0.1.1 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded os_str_bytes v4.2.0
[INFO] [stderr]   Downloaded clap v3.0.0-beta.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9abd9540619e46c6dd8bb0deedac45c853e75785c6398875924bace83b9a4638
[INFO] running `Command { std: "docker" "start" "-a" "9abd9540619e46c6dd8bb0deedac45c853e75785c6398875924bace83b9a4638", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9abd9540619e46c6dd8bb0deedac45c853e75785c6398875924bace83b9a4638", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9abd9540619e46c6dd8bb0deedac45c853e75785c6398875924bace83b9a4638", kill_on_drop: false }`
[INFO] [stdout] 9abd9540619e46c6dd8bb0deedac45c853e75785c6398875924bace83b9a4638
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a29f60520145ce32daca1d01a59f6b080af537c880ec36a6ef8310bdca819e77
[INFO] running `Command { std: "docker" "start" "-a" "a29f60520145ce32daca1d01a59f6b080af537c880ec36a6ef8310bdca819e77", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking textwrap v0.14.2
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]     Checking os_str_bytes v4.2.0
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v3.0.0-beta.5
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking rdg v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `thread_rng` is imported redundantly
[INFO] [stdout]   --> src/sample.rs:57:16
[INFO] [stdout]    |
[INFO] [stdout] 57 |     use rand::{thread_rng, Rng};
[INFO] [stdout]    |                ^^^^^^^^^^
[INFO] [stdout] 58 |
[INFO] [stdout] 59 |     use super::*;
[INFO] [stdout]    |         -------- the item `thread_rng` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Rng` is imported redundantly
[INFO] [stdout]   --> src/sample.rs:57:28
[INFO] [stdout]    |
[INFO] [stdout] 57 |     use rand::{thread_rng, Rng};
[INFO] [stdout]    |                            ^^^
[INFO] [stdout] 58 |
[INFO] [stdout] 59 |     use super::*;
[INFO] [stdout]    |         -------- the item `Rng` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.54s
[INFO] running `Command { std: "docker" "inspect" "a29f60520145ce32daca1d01a59f6b080af537c880ec36a6ef8310bdca819e77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a29f60520145ce32daca1d01a59f6b080af537c880ec36a6ef8310bdca819e77", kill_on_drop: false }`
[INFO] [stdout] a29f60520145ce32daca1d01a59f6b080af537c880ec36a6ef8310bdca819e77
[INFO] checking rdg-0.1.1 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate rdg 0.1.1 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate rdg 0.1.1 on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rdg 0.1.1
[INFO] finished tweaking crates.io crate rdg 0.1.1
[INFO] tweaked toml for crates.io crate rdg 0.1.1 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate crates.io crate rdg 0.1.1 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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e0b4e57ee233bbb513ea3e184275c95e9aa0f1dd93164263c39f1e9acb7e0a53
[INFO] running `Command { std: "docker" "start" "-a" "e0b4e57ee233bbb513ea3e184275c95e9aa0f1dd93164263c39f1e9acb7e0a53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e0b4e57ee233bbb513ea3e184275c95e9aa0f1dd93164263c39f1e9acb7e0a53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0b4e57ee233bbb513ea3e184275c95e9aa0f1dd93164263c39f1e9acb7e0a53", kill_on_drop: false }`
[INFO] [stdout] e0b4e57ee233bbb513ea3e184275c95e9aa0f1dd93164263c39f1e9acb7e0a53
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6e895aef54d1553f0c8f8016a7c7d889f543fc722b63bd413092369def3e850f
[INFO] running `Command { std: "docker" "start" "-a" "6e895aef54d1553f0c8f8016a7c7d889f543fc722b63bd413092369def3e850f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking textwrap v0.14.2
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]     Checking os_str_bytes v4.2.0
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v3.0.0-beta.5
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking rdg v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `thread_rng` is imported redundantly
[INFO] [stdout]   --> src/sample.rs:57:16
[INFO] [stdout]    |
[INFO] [stdout] 57 |     use rand::{thread_rng, Rng};
[INFO] [stdout]    |                ^^^^^^^^^^
[INFO] [stdout] 58 |
[INFO] [stdout] 59 |     use super::*;
[INFO] [stdout]    |         -------- the item `thread_rng` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Rng` is imported redundantly
[INFO] [stdout]   --> src/sample.rs:57:28
[INFO] [stdout]    |
[INFO] [stdout] 57 |     use rand::{thread_rng, Rng};
[INFO] [stdout]    |                            ^^^
[INFO] [stdout] 58 |
[INFO] [stdout] 59 |     use super::*;
[INFO] [stdout]    |         -------- the item `Rng` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/pattern.rs:268:13
[INFO] [stdout]     |
[INFO] [stdout] 268 | /             match parsed_quantifier {
[INFO] [stdout] 269 | |                 Ok(value) => return (&string[..(idx + 1)], Some(value)),
[INFO] [stdout] 270 | |                 _ => return (string, None),
[INFO] [stdout] 271 | |             };
[INFO] [stdout]     | |_____________^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/pattern.rs:268:13
[INFO] [stdout]     |
[INFO] [stdout] 268 | /             match parsed_quantifier {
[INFO] [stdout] 269 | |                 Ok(value) => return (&string[..(idx + 1)], Some(value)),
[INFO] [stdout] 270 | |                 _ => return (string, None),
[INFO] [stdout] 271 | |             };
[INFO] [stdout]     | |_____________^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rdg` (bin "rdg") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 1 previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rdg` (bin "rdg" test) due to 2 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "6e895aef54d1553f0c8f8016a7c7d889f543fc722b63bd413092369def3e850f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e895aef54d1553f0c8f8016a7c7d889f543fc722b63bd413092369def3e850f", kill_on_drop: false }`
[INFO] [stdout] 6e895aef54d1553f0c8f8016a7c7d889f543fc722b63bd413092369def3e850f