[INFO] cloning repository https://github.com/Jeremy5909/Lambda
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Jeremy5909/Lambda" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJeremy5909%2FLambda", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJeremy5909%2FLambda'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5c512c869eac3fbea1b75a012ce8ccfcd0ecb082
[INFO] testing Jeremy5909/Lambda against try#9f93af291970322f4f1c6315ccde4d7078201159 for pr-146098-6
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJeremy5909%2FLambda" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Jeremy5909/Lambda
[INFO] finished tweaking git repo https://github.com/Jeremy5909/Lambda
[INFO] tweaked toml for git repo https://github.com/Jeremy5909/Lambda written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Jeremy5909/Lambda on toolchain 9f93af291970322f4f1c6315ccde4d7078201159
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Jeremy5909/Lambda already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 37878b57a1879db0f7bf9202f16e35b4e2d165f236f8557e0b9a61e48493ec4b
[INFO] running `Command { std: "docker" "start" "-a" "37878b57a1879db0f7bf9202f16e35b4e2d165f236f8557e0b9a61e48493ec4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "37878b57a1879db0f7bf9202f16e35b4e2d165f236f8557e0b9a61e48493ec4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37878b57a1879db0f7bf9202f16e35b4e2d165f236f8557e0b9a61e48493ec4b", kill_on_drop: false }`
[INFO] [stdout] 37878b57a1879db0f7bf9202f16e35b4e2d165f236f8557e0b9a61e48493ec4b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d00974d3da86dca1e39420606cf4431c22ecdc5229b43e5d82cc0c5390a73a79
[INFO] running `Command { std: "docker" "start" "-a" "d00974d3da86dca1e39420606cf4431c22ecdc5229b43e5d82cc0c5390a73a79", kill_on_drop: false }`
[INFO] [stderr]    Compiling lambda v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated functions `variable` and `application` are never used
[INFO] [stdout]   --> src/lambda.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 43 | impl Lambda {
[INFO] [stdout]    | ----------- associated functions in this implementation
[INFO] [stdout] 44 |     pub fn variable(name: &str) -> Self {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 52 |     pub fn application(func: Lambda, args: Vec<Lambda>) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `Command { std: "docker" "inspect" "d00974d3da86dca1e39420606cf4431c22ecdc5229b43e5d82cc0c5390a73a79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d00974d3da86dca1e39420606cf4431c22ecdc5229b43e5d82cc0c5390a73a79", kill_on_drop: false }`
[INFO] [stdout] d00974d3da86dca1e39420606cf4431c22ecdc5229b43e5d82cc0c5390a73a79
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e8f0c4c117f10b31f119f05099cf9e6f1c375a5165844b375e9d8d9b391f42c6
[INFO] running `Command { std: "docker" "start" "-a" "e8f0c4c117f10b31f119f05099cf9e6f1c375a5165844b375e9d8d9b391f42c6", kill_on_drop: false }`
[INFO] [stderr]    Compiling lambda v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/tests.rs:25:64
[INFO] [stdout]    |
[INFO] [stdout] 25 |     Lambda::parse_definition(tokenize("3 := \\f x.f(f(f x))"), (&mut env));
[INFO] [stdout]    |                                                                ^        ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 25 -     Lambda::parse_definition(tokenize("3 := \\f x.f(f(f x))"), (&mut env));
[INFO] [stdout] 25 +     Lambda::parse_definition(tokenize("3 := \\f x.f(f(f x))"), &mut env );
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/tests.rs:26:66
[INFO] [stdout]    |
[INFO] [stdout] 26 |     Lambda::parse_definition(tokenize("S := \\n f x.f (n f x)"), (&mut env));
[INFO] [stdout]    |                                                                  ^        ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 26 -     Lambda::parse_definition(tokenize("S := \\n f x.f (n f x)"), (&mut env));
[INFO] [stdout] 26 +     Lambda::parse_definition(tokenize("S := \\n f x.f (n f x)"), &mut env );
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/tests.rs:30:52
[INFO] [stdout]    |
[INFO] [stdout] 30 |         Lambda::parse_tokens(tokenize("S 3"), Some((&mut env)))
[INFO] [stdout]    |                                                    ^        ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 30 -         Lambda::parse_tokens(tokenize("S 3"), Some((&mut env)))
[INFO] [stdout] 30 +         Lambda::parse_tokens(tokenize("S 3"), Some(&mut env ))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/tests.rs:40:61
[INFO] [stdout]    |
[INFO] [stdout] 40 |     Lambda::parse_definition(tokenize("2 := \\f x.f(f x)"), (&mut env));
[INFO] [stdout]    |                                                             ^        ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 40 -     Lambda::parse_definition(tokenize("2 := \\f x.f(f x)"), (&mut env));
[INFO] [stdout] 40 +     Lambda::parse_definition(tokenize("2 := \\f x.f(f x)"), &mut env );
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/tests.rs:41:65
[INFO] [stdout]    |
[INFO] [stdout] 41 |     Lambda::parse_definition(tokenize("3 := \\f x.f(f(f(x)))"), (&mut env));
[INFO] [stdout]    |                                                                 ^        ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 41 -     Lambda::parse_definition(tokenize("3 := \\f x.f(f(f(x)))"), (&mut env));
[INFO] [stdout] 41 +     Lambda::parse_definition(tokenize("3 := \\f x.f(f(f(x)))"), &mut env );
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/tests.rs:42:65
[INFO] [stdout]    |
[INFO] [stdout] 42 |     Lambda::parse_definition(tokenize("S := \\n f x.f(n f x)"), (&mut env));
[INFO] [stdout]    |                                                                 ^        ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 42 -     Lambda::parse_definition(tokenize("S := \\n f x.f(n f x)"), (&mut env));
[INFO] [stdout] 42 +     Lambda::parse_definition(tokenize("S := \\n f x.f(n f x)"), &mut env );
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/tests.rs:43:60
[INFO] [stdout]    |
[INFO] [stdout] 43 |     Lambda::parse_definition(tokenize("+ := \\a b.a S b"), (&mut env));
[INFO] [stdout]    |                                                            ^        ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 43 -     Lambda::parse_definition(tokenize("+ := \\a b.a S b"), (&mut env));
[INFO] [stdout] 43 +     Lambda::parse_definition(tokenize("+ := \\a b.a S b"), &mut env );
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `Command { std: "docker" "inspect" "e8f0c4c117f10b31f119f05099cf9e6f1c375a5165844b375e9d8d9b391f42c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8f0c4c117f10b31f119f05099cf9e6f1c375a5165844b375e9d8d9b391f42c6", kill_on_drop: false }`
[INFO] [stdout] e8f0c4c117f10b31f119f05099cf9e6f1c375a5165844b375e9d8d9b391f42c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5e20b3a9f2de8817938430a7d44894a0ec8bf07e462ddc84ffc218455d06fbd1
[INFO] running `Command { std: "docker" "start" "-a" "5e20b3a9f2de8817938430a7d44894a0ec8bf07e462ddc84ffc218455d06fbd1", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]   --> src/tests.rs:25:64
[INFO] [stderr]    |
[INFO] [stderr] 25 |     Lambda::parse_definition(tokenize("3 := \\f x.f(f(f x))"), (&mut env));
[INFO] [stderr]    |                                                                ^        ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 25 -     Lambda::parse_definition(tokenize("3 := \\f x.f(f(f x))"), (&mut env));
[INFO] [stderr] 25 +     Lambda::parse_definition(tokenize("3 := \\f x.f(f(f x))"), &mut env );
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]   --> src/tests.rs:26:66
[INFO] [stderr]    |
[INFO] [stderr] 26 |     Lambda::parse_definition(tokenize("S := \\n f x.f (n f x)"), (&mut env));
[INFO] [stderr]    |                                                                  ^        ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 26 -     Lambda::parse_definition(tokenize("S := \\n f x.f (n f x)"), (&mut env));
[INFO] [stderr] 26 +     Lambda::parse_definition(tokenize("S := \\n f x.f (n f x)"), &mut env );
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]   --> src/tests.rs:30:52
[INFO] [stderr]    |
[INFO] [stderr] 30 |         Lambda::parse_tokens(tokenize("S 3"), Some((&mut env)))
[INFO] [stderr]    |                                                    ^        ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 30 -         Lambda::parse_tokens(tokenize("S 3"), Some((&mut env)))
[INFO] [stderr] 30 +         Lambda::parse_tokens(tokenize("S 3"), Some(&mut env ))
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]   --> src/tests.rs:40:61
[INFO] [stderr]    |
[INFO] [stderr] 40 |     Lambda::parse_definition(tokenize("2 := \\f x.f(f x)"), (&mut env));
[INFO] [stderr]    |                                                             ^        ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 40 -     Lambda::parse_definition(tokenize("2 := \\f x.f(f x)"), (&mut env));
[INFO] [stderr] 40 +     Lambda::parse_definition(tokenize("2 := \\f x.f(f x)"), &mut env );
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]   --> src/tests.rs:41:65
[INFO] [stderr]    |
[INFO] [stderr] 41 |     Lambda::parse_definition(tokenize("3 := \\f x.f(f(f(x)))"), (&mut env));
[INFO] [stderr]    |                                                                 ^        ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 41 -     Lambda::parse_definition(tokenize("3 := \\f x.f(f(f(x)))"), (&mut env));
[INFO] [stderr] 41 +     Lambda::parse_definition(tokenize("3 := \\f x.f(f(f(x)))"), &mut env );
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]   --> src/tests.rs:42:65
[INFO] [stderr]    |
[INFO] [stderr] 42 |     Lambda::parse_definition(tokenize("S := \\n f x.f(n f x)"), (&mut env));
[INFO] [stderr]    |                                                                 ^        ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 42 -     Lambda::parse_definition(tokenize("S := \\n f x.f(n f x)"), (&mut env));
[INFO] [stderr] 42 +     Lambda::parse_definition(tokenize("S := \\n f x.f(n f x)"), &mut env );
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]   --> src/tests.rs:43:60
[INFO] [stderr]    |
[INFO] [stderr] 43 |     Lambda::parse_definition(tokenize("+ := \\a b.a S b"), (&mut env));
[INFO] [stderr]    |                                                            ^        ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 43 -     Lambda::parse_definition(tokenize("+ := \\a b.a S b"), (&mut env));
[INFO] [stderr] 43 +     Lambda::parse_definition(tokenize("+ := \\a b.a S b"), &mut env );
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: `lambda` (bin "lambda" test) generated 7 warnings (run `cargo fix --bin "lambda" -p lambda --tests` to apply 7 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/lambda-9960674bbb8f3476)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test tests::test_true ... ok
[INFO] [stdout] test tests::test_false ... ok
[INFO] [stdout] test tests::test_successor ... ok
[INFO] [stdout] test tests::test_add_one_two ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- tests::test_add_one_two stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'tests::test_add_one_two' (25) panicked at src/tests.rs:46:5:
[INFO] [stdout] assertion `left == right` failed
[INFO] [stdout]   left: \f.\x.f (f ((x f) x))
[INFO] [stdout]  right: \f.\x.f (f (f (f x)))
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x587457bc6fb2 - std::backtrace_rs::backtrace::libunwind::trace::h16affffe904e891e
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x587457bc6fb2 - std::backtrace_rs::backtrace::trace_unsynchronized::h5c14b13373ed4150
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x587457bc6fb2 - std::sys::backtrace::_print_fmt::hcbb507f162c816cc
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x587457bc6fb2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h8be9aa933f14675f
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x587457bd6fdf - core::fmt::rt::Argument::fmt::h30ed739d33467c3a
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x587457bd6fdf - core::fmt::write::hfd0efbb002ac7eea
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/fmt/mod.rs:1469:25
[INFO] [stdout]    6:     0x587457b94a83 - std::io::default_write_fmt::hd6d24501f2d7f8d3
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x587457b94a83 - std::io::Write::write_fmt::h79eca2f72fc24111
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x587457ba0822 - std::sys::backtrace::BacktraceLock::print::hf2554f6030d393f7
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x587457ba52ff - std::panicking::default_hook::{{closure}}::h8873121c56335b01
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x587457ba5191 - std::panicking::default_hook::hbafefc2d196267a2
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x587457b6835e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::ha834d5846f91b30b
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   12:     0x587457b6835e - test::test_main_with_exit_callback::{{closure}}::h63c167737eecb025
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x587457ba590f - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hbf9b0f7a281291fd
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   14:     0x587457ba590f - std::panicking::panic_with_hook::h9f5b09d5adc1a745
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x587457ba576a - std::panicking::panic_handler::{{closure}}::h08111e483bdf6a89
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x587457ba0959 - std::sys::backtrace::__rust_end_short_backtrace::h1b86e3414ecbbe8d
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x587457b8924d - __rustc[b292c645e8102103]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x587457bde930 - core::panicking::panic_fmt::h31cc490ecc8cc1fa
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x587457bde733 - core::panicking::assert_failed_inner::h865658b89c1b891d
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/panicking.rs:444:17
[INFO] [stdout]   20:     0x587457b4414b - core::panicking::assert_failed::h858f079ea698033e
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/panicking.rs:399:5
[INFO] [stdout]   21:     0x587457b3a03f - lambda::tests::test_add_one_two::hd9d58e56ef027c45
[INFO] [stdout]                                at /opt/rustwide/workdir/src/tests.rs:46:5
[INFO] [stdout]   22:     0x587457b3a0d7 - lambda::tests::test_add_one_two::{{closure}}::h08393959b274d7b7
[INFO] [stdout]                                at /opt/rustwide/workdir/src/tests.rs:38:22
[INFO] [stdout]   23:     0x587457b363d6 - core::ops::function::FnOnce::call_once::h1e91c39a00d778aa
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x587457b6815b - core::ops::function::FnOnce::call_once::h2b2de5fdd23aab3e
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x587457b6815b - test::__rust_begin_short_backtrace::he551dd004770be01
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:663:18
[INFO] [stdout]   26:     0x587457b7c1bd - test::run_test_in_process::{{closure}}::h5f0b44080a35ed87
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:686:74
[INFO] [stdout]   27:     0x587457b7c1bd - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4dbf65d14893ecf5
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28:     0x587457b7c1bd - std::panicking::catch_unwind::do_call::hc37c563b8a006285
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:590:40
[INFO] [stdout]   29:     0x587457b7c1bd - std::panicking::catch_unwind::h616b6e2e7a27f612
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:553:19
[INFO] [stdout]   30:     0x587457b7c1bd - std::panic::catch_unwind::h1e788dd57758e6d8
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x587457b7c1bd - test::run_test_in_process::hf073c2764f29f8ad
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:686:27
[INFO] [stdout]   32:     0x587457b7c1bd - test::run_test::{{closure}}::h3dc46b7a0c340fa6
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:607:43
[INFO] [stdout]   33:     0x587457b55704 - test::run_test::{{closure}}::h6a4da3c57ef4505f
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:637:41
[INFO] [stdout]   34:     0x587457b55704 - std::sys::backtrace::__rust_begin_short_backtrace::hfd8e44bc311a5d57
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   35:     0x587457b58f5a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h57c4ddec344fe24c
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   36:     0x587457b58f5a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hd7cbe09591f06dfb
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   37:     0x587457b58f5a - std::panicking::catch_unwind::do_call::hdcd076e8e993dfbc
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:590:40
[INFO] [stdout]   38:     0x587457b58f5a - std::panicking::catch_unwind::h8f9f675f3756eab1
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:553:19
[INFO] [stdout]   39:     0x587457b58f5a - std::panic::catch_unwind::he8f74a93abeceb9b
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x587457b58f5a - std::thread::Builder::spawn_unchecked_::{{closure}}::he43db13a2caa41d5
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   41:     0x587457b58f5a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h8f3531a7e0d83514
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x587457b9bd5f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h6ff05134d80ef20e
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   43:     0x587457b9bd5f - std::sys::thread::unix::Thread::new::thread_start::h9a4a41a076a486e0
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   44:     0x7cbb5c1b2aa4 - <unknown>
[INFO] [stdout]   45:     0x7cbb5c23fa64 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     tests::test_add_one_two
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 3 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--bin lambda`
[INFO] running `Command { std: "docker" "inspect" "5e20b3a9f2de8817938430a7d44894a0ec8bf07e462ddc84ffc218455d06fbd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e20b3a9f2de8817938430a7d44894a0ec8bf07e462ddc84ffc218455d06fbd1", kill_on_drop: false }`
[INFO] [stdout] 5e20b3a9f2de8817938430a7d44894a0ec8bf07e462ddc84ffc218455d06fbd1
