[INFO] cloning repository https://github.com/Yichangcs/Ruscheme
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Yichangcs/Ruscheme" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYichangcs%2FRuscheme", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYichangcs%2FRuscheme'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 38207f2fd310405a33701b73af76b758c69c1024
[INFO] checking Yichangcs/Ruscheme against try#15a786332e2f0dd343b226ab6bb8ec028a350f73 for pr-81782
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYichangcs%2FRuscheme" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Yichangcs/Ruscheme on toolchain 15a786332e2f0dd343b226ab6bb8ec028a350f73
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Yichangcs/Ruscheme
[INFO] finished tweaking git repo https://github.com/Yichangcs/Ruscheme
[INFO] tweaked toml for git repo https://github.com/Yichangcs/Ruscheme written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/Yichangcs/Ruscheme already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8f95685fc76a429e585398c441047c0ef3b9d8a034a6d5f4c2f48e0c57c33644
[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" "8f95685fc76a429e585398c441047c0ef3b9d8a034a6d5f4c2f48e0c57c33644", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8f95685fc76a429e585398c441047c0ef3b9d8a034a6d5f4c2f48e0c57c33644", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f95685fc76a429e585398c441047c0ef3b9d8a034a6d5f4c2f48e0c57c33644", kill_on_drop: false }`
[INFO] [stdout] 8f95685fc76a429e585398c441047c0ef3b9d8a034a6d5f4c2f48e0c57c33644
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+15a786332e2f0dd343b226ab6bb8ec028a350f73" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5ade0e59e77104edb6a97e3bc641085e5059b758b8a421b309d283c49d68b33e
[INFO] running `Command { std: "docker" "start" "-a" "5ade0e59e77104edb6a97e3bc641085e5059b758b8a421b309d283c49d68b33e", 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]     Checking ruscheme v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `display::display::pretty_print`
[INFO] [stdout]    --> src/parser.rs:200:17
[INFO] [stdout]     |
[INFO] [stdout] 200 |     use crate::{display::display::pretty_print, scheme_list};
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `tokens` is never read
[INFO] [stdout]    --> src/parser.rs:220:13
[INFO] [stdout]     |
[INFO] [stdout] 220 |         let mut tokens: Vec<String> = vec![];
[INFO] [stdout]     |             ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `ss` is never read
[INFO] [stdout]    --> src/parser.rs:228:13
[INFO] [stdout]     |
[INFO] [stdout] 228 |         let mut ss: Vec<String> = vec![];
[INFO] [stdout]     |             ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `tokens` is never read
[INFO] [stdout]    --> src/parser.rs:244:13
[INFO] [stdout]     |
[INFO] [stdout] 244 |         let mut tokens: Vec<String> = vec![];
[INFO] [stdout]     |             ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/core_of_interpreter.rs:603:13
[INFO] [stdout]     |
[INFO] [stdout] 603 | /             eval(scheme_list!(Exp::Symbol("define".to_string()),
[INFO] [stdout] 604 | |                               Exp::Symbol("x".to_string()),
[INFO] [stdout] 605 | |                               Exp::Integer(8)), ENV.clone());
[INFO] [stdout]     | |_____________________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/core_of_interpreter.rs:613:9
[INFO] [stdout]     |
[INFO] [stdout] 613 | /         eval(scheme_list!(Exp::Symbol("define".to_string()),
[INFO] [stdout] 614 | |                           Exp::Symbol("x".to_string()),
[INFO] [stdout] 615 | |                           Exp::Integer(8)), ENV.clone());
[INFO] [stdout]     | |_________________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/core_of_interpreter.rs:627:13
[INFO] [stdout]     |
[INFO] [stdout] 627 | /             eval(scheme_list!(Exp::Symbol("define".to_string()),
[INFO] [stdout] 628 | |                               Exp::Symbol("x".to_string()),
[INFO] [stdout] 629 | |                               Exp::Integer(8)), ENV.clone());
[INFO] [stdout]     | |_____________________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/core_of_interpreter.rs:653:9
[INFO] [stdout]     |
[INFO] [stdout] 653 | /         eval(scheme_list!(Exp::Symbol("define".to_string()),
[INFO] [stdout] 654 | |                               Exp::Symbol("x".to_string()),
[INFO] [stdout] 655 | |                               Exp::Integer(8)), ENV.clone()); 
[INFO] [stdout]     | |_____________________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/core_of_interpreter.rs:683:13
[INFO] [stdout]     |
[INFO] [stdout] 683 | /             eval(scheme_list!(Exp::Symbol("define".to_string()),
[INFO] [stdout] 684 | |             Exp::Symbol("x".to_string()),
[INFO] [stdout] 685 | |             Exp::Integer(8)), ENV.clone()); 
[INFO] [stdout]     | |___________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/parser.rs:207:9
[INFO] [stdout]     |
[INFO] [stdout] 207 |         read_scheme_programs_from_file(&mut programs);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/parser.rs:221:9
[INFO] [stdout]     |
[INFO] [stdout] 221 |         read_scheme_programs_from_file(&mut programs);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/parser.rs:236:9
[INFO] [stdout]     |
[INFO] [stdout] 236 |         read_scheme_programs_from_file(&mut programs);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/parser.rs:245:9
[INFO] [stdout]     |
[INFO] [stdout] 245 |         read_scheme_programs_from_file(&mut programs);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.81s
[INFO] running `Command { std: "docker" "inspect" "5ade0e59e77104edb6a97e3bc641085e5059b758b8a421b309d283c49d68b33e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ade0e59e77104edb6a97e3bc641085e5059b758b8a421b309d283c49d68b33e", kill_on_drop: false }`
[INFO] [stdout] 5ade0e59e77104edb6a97e3bc641085e5059b758b8a421b309d283c49d68b33e