[INFO] cloning repository https://github.com/gamma-delta/ruth
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gamma-delta/ruth" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgamma-delta%2Fruth", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgamma-delta%2Fruth'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a9838dd5b1cd87e12fe19f73e81dabaff9f36eee
[INFO] testing gamma-delta/ruth against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgamma-delta%2Fruth" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gamma-delta/ruth on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gamma-delta/ruth
[INFO] finished tweaking git repo https://github.com/gamma-delta/ruth
[INFO] tweaked toml for git repo https://github.com/gamma-delta/ruth written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/gamma-delta/ruth already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded vtparse v0.5.0
[INFO] [stderr]   Downloaded filedescriptor v0.7.3
[INFO] [stderr]   Downloaded gc_derive v0.4.1
[INFO] [stderr]   Downloaded memmem v0.1.1
[INFO] [stderr]   Downloaded terminfo v0.7.3
[INFO] [stderr]   Downloaded ariadne v0.1.3
[INFO] [stderr]   Downloaded bimap v0.6.1
[INFO] [stderr]   Downloaded gc v0.4.1
[INFO] [stderr]   Downloaded termwiz v0.13.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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] ea494786c161c34750c1453bd3327e1581c9543bf16563f5ebf1ff346f1e3c51
[INFO] running `Command { std: "docker" "start" "-a" "ea494786c161c34750c1453bd3327e1581c9543bf16563f5ebf1ff346f1e3c51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ea494786c161c34750c1453bd3327e1581c9543bf16563f5ebf1ff346f1e3c51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea494786c161c34750c1453bd3327e1581c9543bf16563f5ebf1ff346f1e3c51", kill_on_drop: false }`
[INFO] [stdout] ea494786c161c34750c1453bd3327e1581c9543bf16563f5ebf1ff346f1e3c51
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4b87c60bd7336814fb6ee9a17cfa49076505fe9594ff39e59a32029a82124b39
[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" "4b87c60bd7336814fb6ee9a17cfa49076505fe9594ff39e59a32029a82124b39", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling siphasher v0.3.6
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling anyhow v1.0.43
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling utf8parse v0.2.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling memmem v0.1.1
[INFO] [stderr]    Compiling xi-unicode v0.3.0
[INFO] [stderr]    Compiling yansi v0.5.0
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling base64 v0.13.0
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling pico-args v0.4.2
[INFO] [stderr]    Compiling paste v1.0.5
[INFO] [stderr]    Compiling bimap v0.6.1
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]    Compiling vtparse v0.5.0
[INFO] [stderr]    Compiling phf_shared v0.8.0
[INFO] [stderr]    Compiling itertools v0.10.1
[INFO] [stderr]    Compiling ariadne v0.1.3
[INFO] [stderr]    Compiling phf v0.8.0
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling semver-parser v0.10.2
[INFO] [stderr]    Compiling dirs-sys v0.3.6
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling filedescriptor v0.7.3
[INFO] [stderr]    Compiling termios v0.3.3
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling semver v0.11.0
[INFO] [stderr]    Compiling dirs v2.0.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling signal-hook v0.1.17
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling ordered-float v2.7.0
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]    Compiling phf_codegen v0.8.0
[INFO] [stderr]    Compiling terminfo v0.7.3
[INFO] [stderr]    Compiling synstructure v0.12.5
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]    Compiling num-derive v0.3.3
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling gc_derive v0.4.1
[INFO] [stderr]    Compiling gc v0.4.1
[INFO] [stderr]    Compiling thiserror v1.0.26
[INFO] [stderr]    Compiling termwiz v0.13.0
[INFO] [stderr]    Compiling ruth v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/repl.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 18 | /         loop {
[INFO] [stdout] 19 | |             let ps = if in_parens { ps2 } else { ps1 };
[INFO] [stdout] 20 | |             let ps = self.eval(self.thtdlib(), Gc::new(Expr::Symbol(ps)));
[INFO] [stdout] 21 | |             let ps = self.print_expr(ps).unwrap();
[INFO] [stdout] ...  |
[INFO] [stdout] 75 | |             input.clear();
[INFO] [stdout] 76 | |         }
[INFO] [stdout]    | |_________- any code following this expression is unreachable
[INFO] [stdout] 77 | 
[INFO] [stdout] 78 |           Ok(())
[INFO] [stdout]    |           ^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [optimized + debuginfo] target(s) in 8m 13s
[INFO] running `Command { std: "docker" "inspect" "4b87c60bd7336814fb6ee9a17cfa49076505fe9594ff39e59a32029a82124b39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b87c60bd7336814fb6ee9a17cfa49076505fe9594ff39e59a32029a82124b39", kill_on_drop: false }`
[INFO] [stdout] 4b87c60bd7336814fb6ee9a17cfa49076505fe9594ff39e59a32029a82124b39
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--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] 343a383015cfd36952d6771a6f841ec9796d5398f47deb2e6fb96499e5c481f2
[INFO] running `Command { std: "docker" "start" "-a" "343a383015cfd36952d6771a6f841ec9796d5398f47deb2e6fb96499e5c481f2", kill_on_drop: false }`
[INFO] [stderr]    Compiling ruth v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/repl.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 18 | /         loop {
[INFO] [stdout] 19 | |             let ps = if in_parens { ps2 } else { ps1 };
[INFO] [stdout] 20 | |             let ps = self.eval(self.thtdlib(), Gc::new(Expr::Symbol(ps)));
[INFO] [stdout] 21 | |             let ps = self.print_expr(ps).unwrap();
[INFO] [stdout] ...  |
[INFO] [stdout] 75 | |             input.clear();
[INFO] [stdout] 76 | |         }
[INFO] [stdout]    | |_________- any code following this expression is unreachable
[INFO] [stdout] 77 | 
[INFO] [stdout] 78 |           Ok(())
[INFO] [stdout]    |           ^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/repl.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 18 | /         loop {
[INFO] [stdout] 19 | |             let ps = if in_parens { ps2 } else { ps1 };
[INFO] [stdout] 20 | |             let ps = self.eval(self.thtdlib(), Gc::new(Expr::Symbol(ps)));
[INFO] [stdout] 21 | |             let ps = self.print_expr(ps).unwrap();
[INFO] [stdout] ...  |
[INFO] [stdout] 75 | |             input.clear();
[INFO] [stdout] 76 | |         }
[INFO] [stdout]    | |_________- any code following this expression is unreachable
[INFO] [stdout] 77 | 
[INFO] [stdout] 78 |           Ok(())
[INFO] [stdout]    |           ^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [optimized + debuginfo] target(s) in 2.59s
[INFO] running `Command { std: "docker" "inspect" "343a383015cfd36952d6771a6f841ec9796d5398f47deb2e6fb96499e5c481f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "343a383015cfd36952d6771a6f841ec9796d5398f47deb2e6fb96499e5c481f2", kill_on_drop: false }`
[INFO] [stdout] 343a383015cfd36952d6771a6f841ec9796d5398f47deb2e6fb96499e5c481f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c098c30487b08efe510e3fd93487bd607b270bf5354d531d41c4aa85b6ed8c1f
[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" "c098c30487b08efe510e3fd93487bd607b270bf5354d531d41c4aa85b6ed8c1f", kill_on_drop: false }`
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> src/repl.rs:78:9
[INFO] [stderr]    |
[INFO] [stderr] 18 | /         loop {
[INFO] [stderr] 19 | |             let ps = if in_parens { ps2 } else { ps1 };
[INFO] [stderr] 20 | |             let ps = self.eval(self.thtdlib(), Gc::new(Expr::Symbol(ps)));
[INFO] [stderr] 21 | |             let ps = self.print_expr(ps).unwrap();
[INFO] [stderr] ...  |
[INFO] [stderr] 75 | |             input.clear();
[INFO] [stderr] 76 | |         }
[INFO] [stderr]    | |_________- any code following this expression is unreachable
[INFO] [stderr] 77 | 
[INFO] [stderr] 78 |           Ok(())
[INFO] [stderr]    |           ^^^^^^ unreachable expression
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `ruth` (lib) generated 1 warning
[INFO] [stderr] warning: `ruth` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [optimized + debuginfo] target(s) in 0.07s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ruth-3a8203c2fc90f3b2)
[INFO] [stdout] running 1 test
[INFO] [stdout] test parse::test_string_pos ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ruth-7cd0ee68374c076e)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ruth
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c098c30487b08efe510e3fd93487bd607b270bf5354d531d41c4aa85b6ed8c1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c098c30487b08efe510e3fd93487bd607b270bf5354d531d41c4aa85b6ed8c1f", kill_on_drop: false }`
[INFO] [stdout] c098c30487b08efe510e3fd93487bd607b270bf5354d531d41c4aa85b6ed8c1f