[INFO] cloning repository https://github.com/beoboo/ruscheme
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/beoboo/ruscheme" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbeoboo%2Fruscheme", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbeoboo%2Fruscheme'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a4c2c5374c0fa4139b9b555f1a3e4e443f7a3cd4
[INFO] checking beoboo/ruscheme against try#9c1dcf141bc0875407c4eb36972857bd3db713e2 for pr-81863
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbeoboo%2Fruscheme" "/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/beoboo/ruscheme on toolchain 9c1dcf141bc0875407c4eb36972857bd3db713e2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/beoboo/ruscheme
[INFO] finished tweaking git repo https://github.com/beoboo/ruscheme
[INFO] tweaked toml for git repo https://github.com/beoboo/ruscheme written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/beoboo/ruscheme already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "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 num v0.1.42
[INFO] [stderr]   Downloaded log v0.4.8
[INFO] [stderr]   Downloaded num-bigint v0.1.44
[INFO] [stderr]   Downloaded kernel32-sys v0.2.2
[INFO] [stderr]   Downloaded approx v0.1.1
[INFO] [stderr]   Downloaded fuchsia-zircon-sys v0.3.3
[INFO] [stderr]   Downloaded num-traits v0.2.8
[INFO] [stderr]   Downloaded winconsole v0.10.0
[INFO] [stderr]   Downloaded strsim v0.8.0
[INFO] [stderr]   Downloaded fuchsia-zircon v0.3.3
[INFO] [stderr]   Downloaded rand v0.4.6
[INFO] [stderr]   Downloaded winapi v0.2.8
[INFO] [stderr]   Downloaded miow v0.2.1
[INFO] [stderr]   Downloaded ansi_term v0.11.0
[INFO] [stderr]   Downloaded atty v0.2.13
[INFO] [stderr]   Downloaded env_logger v0.7.1
[INFO] [stderr]   Downloaded quick-error v1.2.2
[INFO] [stderr]   Downloaded winapi-build v0.1.1
[INFO] [stderr]   Downloaded textwrap v0.11.0
[INFO] [stderr]   Downloaded colored v1.8.0
[INFO] [stderr]   Downloaded unicode-width v0.1.6
[INFO] [stderr]   Downloaded clap v2.33.0
[INFO] [stderr]   Downloaded cgmath v0.16.1
[INFO] [stderr]   Downloaded rand_core v0.4.2
[INFO] [stderr]   Downloaded num-complex v0.1.43
[INFO] [stderr]   Downloaded num-integer v0.1.41
[INFO] [stderr]   Downloaded winapi-util v0.1.2
[INFO] [stderr]   Downloaded rdrand v0.4.0
[INFO] [stderr]   Downloaded wincolor v1.0.2
[INFO] [stderr]   Downloaded rustc-serialize v0.3.24
[INFO] [stderr]   Downloaded slab v0.4.2
[INFO] [stderr]   Downloaded autocfg v0.1.7
[INFO] [stderr]   Downloaded ws2_32-sys v0.2.1
[INFO] [stderr]   Downloaded net2 v0.2.33
[INFO] [stderr]   Downloaded termcolor v1.0.5
[INFO] [stderr]   Downloaded num-rational v0.1.42
[INFO] [stderr]   Downloaded crossterm v0.12.1
[INFO] [stderr]   Downloaded rgb v0.8.14
[INFO] [stderr]   Downloaded num-iter v0.1.39
[INFO] [stderr]   Downloaded vec_map v0.8.1
[INFO] [stderr]   Downloaded thread_local v0.3.6
[INFO] [stderr]   Downloaded libc v0.2.65
[INFO] [stderr]   Downloaded regex-syntax v0.6.12
[INFO] [stderr]   Downloaded iovec v0.1.4
[INFO] [stderr]   Downloaded num-traits v0.1.43
[INFO] [stderr]   Downloaded fuchsia-cprng v0.1.1
[INFO] [stderr]   Downloaded crossterm_winapi v0.3.0
[INFO] [stderr]   Downloaded aho-corasick v0.7.6
[INFO] [stderr]   Downloaded mio v0.6.19
[INFO] [stderr]   Downloaded winapi v0.3.8
[INFO] [stderr]   Downloaded humantime v1.3.0
[INFO] [stderr]   Downloaded rand_core v0.3.1
[INFO] [stderr]   Downloaded hamcrest2 v0.2.6
[INFO] [stderr]   Downloaded regex v1.3.1
[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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 81be9e9ebfd7d13656b47e6d8d55643adbe31e55b151f012cbde75a3152d1e4d
[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" "81be9e9ebfd7d13656b47e6d8d55643adbe31e55b151f012cbde75a3152d1e4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "81be9e9ebfd7d13656b47e6d8d55643adbe31e55b151f012cbde75a3152d1e4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81be9e9ebfd7d13656b47e6d8d55643adbe31e55b151f012cbde75a3152d1e4d", kill_on_drop: false }`
[INFO] [stdout] 81be9e9ebfd7d13656b47e6d8d55643adbe31e55b151f012cbde75a3152d1e4d
[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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "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] a84e3414cec7c0cf8397931310b6bb41a5339f4ed93f0d2606c24f294496918b
[INFO] running `Command { std: "docker" "start" "-a" "a84e3414cec7c0cf8397931310b6bb41a5339f4ed93f0d2606c24f294496918b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]    Compiling winapi v0.3.8
[INFO] [stderr]    Compiling cgmath v0.16.1
[INFO] [stderr]     Checking approx v0.1.1
[INFO] [stderr]     Checking regex-syntax v0.6.12
[INFO] [stderr]     Checking quick-error v1.2.2
[INFO] [stderr]     Checking rgb v0.8.14
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]     Checking termcolor v1.0.5
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]     Checking aho-corasick v0.7.6
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking mio v0.6.19
[INFO] [stderr]     Checking crossterm v0.12.1
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking winconsole v0.10.0
[INFO] [stderr]     Checking colored v1.8.0
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking hamcrest2 v0.2.6
[INFO] [stderr]     Checking ruscheme v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `log::debug`
[INFO] [stdout]  --> src/compiler.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use log::debug;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/environment.rs:188:6
[INFO] [stdout]     |
[INFO] [stdout] 188 |     };
[INFO] [stdout]     |      ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/environment.rs:188:6
[INFO] [stdout]     |
[INFO] [stdout] 188 |     };
[INFO] [stdout]     |      ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/printer.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn new() -> Printer {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `print`
[INFO] [stdout]   --> src/printer.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn print(&self, tokens: Vec<Token>) -> Result<String, Error> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_eof`
[INFO] [stdout]   --> src/token.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 44 |     pub fn is_eof(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 33.50s
[INFO] running `Command { std: "docker" "inspect" "a84e3414cec7c0cf8397931310b6bb41a5339f4ed93f0d2606c24f294496918b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a84e3414cec7c0cf8397931310b6bb41a5339f4ed93f0d2606c24f294496918b", kill_on_drop: false }`
[INFO] [stdout] a84e3414cec7c0cf8397931310b6bb41a5339f4ed93f0d2606c24f294496918b