[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] c6ce4c47496538e6057bdf509df17fb4d66eccc3
[INFO] checking itaibn/scheme against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fitaibn%2Fscheme" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/itaibn/scheme on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "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-9/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" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 09bc2b49173d18c9a32f314e947333ad078f6c875b9eb31476f839fed5433721
[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" "09bc2b49173d18c9a32f314e947333ad078f6c875b9eb31476f839fed5433721", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "09bc2b49173d18c9a32f314e947333ad078f6c875b9eb31476f839fed5433721", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09bc2b49173d18c9a32f314e947333ad078f6c875b9eb31476f839fed5433721", kill_on_drop: false }`
[INFO] [stdout] 09bc2b49173d18c9a32f314e947333ad078f6c875b9eb31476f839fed5433721
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 191093055e440a81a6a87f56100ace127e72032cc7b8b631b14b026187e2c3c1
[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" "191093055e440a81a6a87f56100ace127e72032cc7b8b631b14b026187e2c3c1", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking ucd-util v0.1.8
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]     Checking utf8-ranges v1.0.4
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]     Checking gc v0.3.3
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-iter v0.1.40
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]    Compiling gc_derive v0.3.2
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]     Checking scheme v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::path::PathBuf`
[INFO] [stdout]  --> src/port.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::path::PathBuf;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Finalize`, `Trace`
[INFO] [stdout]  --> src/port.rs:8:10
[INFO] [stdout]   |
[INFO] [stdout] 8 | use gc::{Finalize, Trace};
[INFO] [stdout]   |          ^^^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::port::Port`
[INFO] [stdout]   --> src/scheme.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::port::Port;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::PathBuf`
[INFO] [stdout]  --> src/port.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::path::PathBuf;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Finalize`, `Trace`
[INFO] [stdout]  --> src/port.rs:8:10
[INFO] [stdout]   |
[INFO] [stdout] 8 | use gc::{Finalize, Trace};
[INFO] [stdout]   |          ^^^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::port::Port`
[INFO] [stdout]   --> src/scheme.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::port::Port;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/read/lexer.rs:85:1
[INFO] [stdout]    |
[INFO] [stdout] 85 | fn is_scheme_identifier_subsequent(c: char) -> bool {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] 86 |     is_scheme_identifier_subsequent(c) || c.is_digit(10) || "+-.@".contains(c)
[INFO] [stdout]    |     ---------------------------------- recursive call site
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[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:80:4
[INFO] [stdout]    |
[INFO] [stdout] 80 | 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:85:4
[INFO] [stdout]    |
[INFO] [stdout] 85 | 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: variant is never constructed: `ConsImm`
[INFO] [stdout]   --> src/scheme.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     ConsImm(Scheme, Scheme),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `cons_imm`
[INFO] [stdout]   --> src/scheme.rs:93:12
[INFO] [stdout]    |
[INFO] [stdout] 93 |     pub fn cons_imm(fst: Scheme, snd: Scheme) -> Scheme {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/read/lexer.rs:85:1
[INFO] [stdout]    |
[INFO] [stdout] 85 | fn is_scheme_identifier_subsequent(c: char) -> bool {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] 86 |     is_scheme_identifier_subsequent(c) || c.is_digit(10) || "+-.@".contains(c)
[INFO] [stdout]    |     ---------------------------------- recursive call site
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 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:80:4
[INFO] [stdout]    |
[INFO] [stdout] 80 | 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:85:4
[INFO] [stdout]    |
[INFO] [stdout] 85 | 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:111:8
[INFO] [stdout]     |
[INFO] [stdout] 111 |     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:119:8
[INFO] [stdout]     |
[INFO] [stdout] 119 |     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:125:8
[INFO] [stdout]     |
[INFO] [stdout] 125 |     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: variant is never constructed: `ConsImm`
[INFO] [stdout]   --> src/scheme.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     ConsImm(Scheme, Scheme),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `cons_imm`
[INFO] [stdout]   --> src/scheme.rs:93:12
[INFO] [stdout]    |
[INFO] [stdout] 93 |     pub fn cons_imm(fst: Scheme, snd: Scheme) -> Scheme {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.59s
[INFO] running `Command { std: "docker" "inspect" "191093055e440a81a6a87f56100ace127e72032cc7b8b631b14b026187e2c3c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "191093055e440a81a6a87f56100ace127e72032cc7b8b631b14b026187e2c3c1", kill_on_drop: false }`
[INFO] [stdout] 191093055e440a81a6a87f56100ace127e72032cc7b8b631b14b026187e2c3c1