[INFO] cloning repository https://github.com/itaibn/scheme
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/itaibn/scheme" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fitaibn%2Fscheme", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fitaibn%2Fscheme'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9b1305f3e95a2720a468d8726a9b78d846c57834
[INFO] checking itaibn/scheme against try#9cfe725f0995b018340c519db1b2f3cf8a7e0631 for pr-81174
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fitaibn%2Fscheme" "/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/itaibn/scheme on toolchain 9cfe725f0995b018340c519db1b2f3cf8a7e0631
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/itaibn/scheme
[INFO] finished tweaking git repo https://github.com/itaibn/scheme
[INFO] tweaked toml for git repo https://github.com/itaibn/scheme written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/itaibn/scheme already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wyz v0.2.0
[INFO] [stderr]   Downloaded num-rational v0.3.2
[INFO] [stderr]   Downloaded radium v0.5.3
[INFO] [stderr]   Downloaded synstructure v0.6.1
[INFO] [stderr]   Downloaded gc v0.3.6
[INFO] [stderr]   Downloaded funty v1.0.1
[INFO] [stderr]   Downloaded bitvec v0.19.4
[INFO] [stderr]   Downloaded tap v1.0.0
[INFO] [stderr]   Downloaded num-complex v0.3.1
[INFO] [stderr]   Downloaded lexical-core v0.7.4
[INFO] [stderr]   Downloaded num-traits v0.2.14
[INFO] [stderr]   Downloaded num-bigint v0.3.1
[INFO] [stderr]   Downloaded num-integer v0.1.44
[INFO] [stderr]   Downloaded nom v6.0.1
[INFO] [stderr]   Downloaded gc_derive v0.3.2
[INFO] [stderr]   Downloaded num-iter v0.1.42
[INFO] [stderr]   Downloaded num v0.3.1
[INFO] [stderr]   Downloaded static_assertions v1.1.0
[INFO] [stderr]   Downloaded arrayvec v0.5.2
[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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "metadata" "--no-deps" "--format-version=1", 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] b7201b7fc693b22fecbc8de1ea7110ee513432bee5052d1919db0874291edc34
[INFO] running `Command { std: "docker" "start" "-a" "b7201b7fc693b22fecbc8de1ea7110ee513432bee5052d1919db0874291edc34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b7201b7fc693b22fecbc8de1ea7110ee513432bee5052d1919db0874291edc34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7201b7fc693b22fecbc8de1ea7110ee513432bee5052d1919db0874291edc34", kill_on_drop: false }`
[INFO] [stdout] b7201b7fc693b22fecbc8de1ea7110ee513432bee5052d1919db0874291edc34
[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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 512b28eb5b1f5a355999a21501c7a376f48c70d08045d0f15818799a860b93fd
[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" "512b28eb5b1f5a355999a21501c7a376f48c70d08045d0f15818799a860b93fd", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling radium v0.5.3
[INFO] [stderr]    Compiling lexical-core v0.7.4
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking wyz v0.2.0
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking tap v1.0.0
[INFO] [stderr]     Checking funty v1.0.1
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]    Compiling nom v6.0.1
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.3.1
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]     Checking bitvec v0.19.4
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]     Checking num-complex v0.3.1
[INFO] [stderr]    Compiling gc_derive v0.3.2
[INFO] [stderr]     Checking gc v0.3.6
[INFO] [stderr]     Checking num v0.3.1
[INFO] [stderr]     Checking scheme v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `Read`
[INFO] [stdout]   --> src/port.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     Read,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Write`
[INFO] [stdout]   --> src/port.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     Write,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `open_input_file`
[INFO] [stdout]   --> src/port.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn open_input_file(fname: &[char]) -> Result<Self> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rw_type`
[INFO] [stdout]   --> src/port.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn rw_type(&self) -> PortRWType {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Next`
[INFO] [stdout]   --> src/runtime.rs:74:5
[INFO] [stdout]    |
[INFO] [stdout] 74 | /     Next {
[INFO] [stdout] 75 | |         to_eval: Expression,
[INFO] [stdout] 76 | |         env: Environment,
[INFO] [stdout] 77 | |         next_eval_seq: EvaluationSequenceBox,
[INFO] [stdout] 78 | |     },
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `End`
[INFO] [stdout]   --> src/runtime.rs:79:5
[INFO] [stdout]    |
[INFO] [stdout] 79 |     End(Scheme),
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains an unused formatting placeholder
[INFO] [stdout]    --> src/builtin.rs:598:47
[INFO] [stdout]     |
[INFO] [stdout] 598 |         assert!(lowercase.next().is_none(), "'{}' converts into a \
[INFO] [stdout]     |                                               ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(panic_fmt)]` on by default
[INFO] [stdout]     = note: this message is not used as a format string when given without arguments, but will be in a future Rust edition
[INFO] [stdout] help: add the missing argument
[INFO] [stdout]     |
[INFO] [stdout] 600 |             know how to handle.", ...);
[INFO] [stdout]     |                                 ^^^^^
[INFO] [stdout] help: or add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 598 |         assert!(lowercase.next().is_none(), "{}", "'{}' converts into a \
[INFO] [stdout]     |                                             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Read`
[INFO] [stdout]   --> src/port.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     Read,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Write`
[INFO] [stdout]   --> src/port.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     Write,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `open_input_file`
[INFO] [stdout]   --> src/port.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn open_input_file(fname: &[char]) -> Result<Self> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rw_type`
[INFO] [stdout]   --> src/port.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn rw_type(&self) -> PortRWType {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Next`
[INFO] [stdout]   --> src/runtime.rs:74:5
[INFO] [stdout]    |
[INFO] [stdout] 74 | /     Next {
[INFO] [stdout] 75 | |         to_eval: Expression,
[INFO] [stdout] 76 | |         env: Environment,
[INFO] [stdout] 77 | |         next_eval_seq: EvaluationSequenceBox,
[INFO] [stdout] 78 | |     },
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `End`
[INFO] [stdout]   --> src/runtime.rs:79:5
[INFO] [stdout]    |
[INFO] [stdout] 79 |     End(Scheme),
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains an unused formatting placeholder
[INFO] [stdout]    --> src/builtin.rs:598:47
[INFO] [stdout]     |
[INFO] [stdout] 598 |         assert!(lowercase.next().is_none(), "'{}' converts into a \
[INFO] [stdout]     |                                               ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(panic_fmt)]` on by default
[INFO] [stdout]     = note: this message is not used as a format string when given without arguments, but will be in a future Rust edition
[INFO] [stdout] help: add the missing argument
[INFO] [stdout]     |
[INFO] [stdout] 600 |             know how to handle.", ...);
[INFO] [stdout]     |                                 ^^^^^
[INFO] [stdout] help: or add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 598 |         assert!(lowercase.next().is_none(), "{}", "'{}' converts into a \
[INFO] [stdout]     |                                             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.75s
[INFO] running `Command { std: "docker" "inspect" "512b28eb5b1f5a355999a21501c7a376f48c70d08045d0f15818799a860b93fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "512b28eb5b1f5a355999a21501c7a376f48c70d08045d0f15818799a860b93fd", kill_on_drop: false }`
[INFO] [stdout] 512b28eb5b1f5a355999a21501c7a376f48c70d08045d0f15818799a860b93fd