[INFO] cloning repository https://github.com/Ryan1729/prop-proc-prog-puzz
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Ryan1729/prop-proc-prog-puzz" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRyan1729%2Fprop-proc-prog-puzz", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRyan1729%2Fprop-proc-prog-puzz'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cde2a1afb4ca6edbf59d8ad7e518d2b11b3c7304
[INFO] checking Ryan1729/prop-proc-prog-puzz against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRyan1729%2Fprop-proc-prog-puzz" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Ryan1729/prop-proc-prog-puzz on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Ryan1729/prop-proc-prog-puzz
[INFO] finished tweaking git repo https://github.com/Ryan1729/prop-proc-prog-puzz
[INFO] tweaked toml for git repo https://github.com/Ryan1729/prop-proc-prog-puzz written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/Ryan1729/prop-proc-prog-puzz already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded quickcheck v0.3.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 27fc8e6892260834595401f86d8f46b6018d8a6036d6c5f9442ebeb20a8cc522
[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" "27fc8e6892260834595401f86d8f46b6018d8a6036d6c5f9442ebeb20a8cc522", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "27fc8e6892260834595401f86d8f46b6018d8a6036d6c5f9442ebeb20a8cc522", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27fc8e6892260834595401f86d8f46b6018d8a6036d6c5f9442ebeb20a8cc522", kill_on_drop: false }`
[INFO] [stdout] 27fc8e6892260834595401f86d8f46b6018d8a6036d6c5f9442ebeb20a8cc522
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 279a690102e8435a0ee32e12a269132ce5283961622e66a37458dde470c56fba
[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" "279a690102e8435a0ee32e12a269132ce5283961622e66a37458dde470c56fba", kill_on_drop: false }`
[INFO] [stderr]     Checking regex-syntax v0.3.9
[INFO] [stderr]     Checking utf8-ranges v0.1.3
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking prop_proc_prog_puzz v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/code_gen.rs:212:22
[INFO] [stdout]     |
[INFO] [stdout] 212 |     pub example: &'a Fn(&mut StdRng) -> String,
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut StdRng) -> String`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/code_gen.rs:217:46
[INFO] [stdout]     |
[INFO] [stdout] 217 |     pub fn built_in(name: &str, example: &'a Fn(&mut StdRng) -> String) -> Self {
[INFO] [stdout]     |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut StdRng) -> String`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:38:25
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let input_example: &Fn(&mut StdRng) -> String = &|rng: &mut StdRng| rng.gen::<u8>().to_string();
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut StdRng) -> String`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:69:20
[INFO] [stdout]    |
[INFO] [stdout] 69 |         example: &|mut rng| match rng.gen::<u8>() % 3 {
[INFO] [stdout]    |                    ----^^^
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]     Checking env_logger v0.3.5
[INFO] [stderr]     Checking quickcheck v0.3.2
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/code_gen.rs:212:22
[INFO] [stdout]     |
[INFO] [stdout] 212 |     pub example: &'a Fn(&mut StdRng) -> String,
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut StdRng) -> String`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/code_gen.rs:217:46
[INFO] [stdout]     |
[INFO] [stdout] 217 |     pub fn built_in(name: &str, example: &'a Fn(&mut StdRng) -> String) -> Self {
[INFO] [stdout]     |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut StdRng) -> String`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:38:25
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let input_example: &Fn(&mut StdRng) -> String = &|rng: &mut StdRng| rng.gen::<u8>().to_string();
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut StdRng) -> String`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:69:20
[INFO] [stdout]    |
[INFO] [stdout] 69 |         example: &|mut rng| match rng.gen::<u8>() % 3 {
[INFO] [stdout]    |                    ----^^^
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.23s
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "279a690102e8435a0ee32e12a269132ce5283961622e66a37458dde470c56fba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "279a690102e8435a0ee32e12a269132ce5283961622e66a37458dde470c56fba", kill_on_drop: false }`
[INFO] [stdout] 279a690102e8435a0ee32e12a269132ce5283961622e66a37458dde470c56fba