[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] 507cf6ef6a979ecdf47c6acbfc940fd35fddf093
[INFO] checking itaibn/scheme against master#b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18 for pr-79470
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fitaibn%2Fscheme" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/itaibn/scheme on toolchain b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "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-6/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" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "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] f411cfe4152acd82d88be550697542683366aa9cf0e7a292d4777ebc0c81df6d
[INFO] running `Command { std: "docker" "start" "-a" "f411cfe4152acd82d88be550697542683366aa9cf0e7a292d4777ebc0c81df6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f411cfe4152acd82d88be550697542683366aa9cf0e7a292d4777ebc0c81df6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f411cfe4152acd82d88be550697542683366aa9cf0e7a292d4777ebc0c81df6d", kill_on_drop: false }`
[INFO] [stdout] f411cfe4152acd82d88be550697542683366aa9cf0e7a292d4777ebc0c81df6d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "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] ee543362a4dd4dce5155b7ddbafa73e9c81360c77cc04cb5006ccfd9d0612d3a
[INFO] running `Command { std: "docker" "start" "-a" "ee543362a4dd4dce5155b7ddbafa73e9c81360c77cc04cb5006ccfd9d0612d3a", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking ucd-util v0.1.8
[INFO] [stderr]     Checking utf8-ranges v1.0.4
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking regex-syntax v0.5.6
[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]    Compiling gc_derive v0.3.2
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking gc v0.3.6
[INFO] [stderr]     Checking num-complex v0.3.1
[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: function is never used: `is_scheme_identifier_initial`
[INFO] [stdout]   --> src/read/lexer.rs:81:4
[INFO] [stdout]    |
[INFO] [stdout] 81 | fn is_scheme_identifier_initial(c: char) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_scheme_identifier_subsequent`
[INFO] [stdout]   --> src/read/lexer.rs:86:4
[INFO] [stdout]    |
[INFO] [stdout] 86 | fn is_scheme_identifier_subsequent(c: char) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rational_i64`
[INFO] [stdout]    --> src/read/lexer.rs:112:8
[INFO] [stdout]     |
[INFO] [stdout] 112 |     fn rational_i64(num: i64, den: i64, exact: Exactness) -> Number {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_i64`
[INFO] [stdout]    --> src/read/lexer.rs:120:8
[INFO] [stdout]     |
[INFO] [stdout] 120 |     fn from_i64(x: i64) -> Token {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_str`
[INFO] [stdout]    --> src/read/lexer.rs:126:8
[INFO] [stdout]     |
[INFO] [stdout] 126 |     fn from_str(s: &str) -> Token {
[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: 12 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: function is never used: `is_scheme_identifier_initial`
[INFO] [stdout]   --> src/read/lexer.rs:81:4
[INFO] [stdout]    |
[INFO] [stdout] 81 | fn is_scheme_identifier_initial(c: char) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_scheme_identifier_subsequent`
[INFO] [stdout]   --> src/read/lexer.rs:86:4
[INFO] [stdout]    |
[INFO] [stdout] 86 | fn is_scheme_identifier_subsequent(c: char) -> bool {
[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: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.85s
[INFO] running `Command { std: "docker" "inspect" "ee543362a4dd4dce5155b7ddbafa73e9c81360c77cc04cb5006ccfd9d0612d3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee543362a4dd4dce5155b7ddbafa73e9c81360c77cc04cb5006ccfd9d0612d3a", kill_on_drop: false }`
[INFO] [stdout] ee543362a4dd4dce5155b7ddbafa73e9c81360c77cc04cb5006ccfd9d0612d3a