[INFO] cloning repository https://github.com/SullivanMuse/transform_rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SullivanMuse/transform_rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSullivanMuse%2Ftransform_rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSullivanMuse%2Ftransform_rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 34389dba41eebd33af73b73e3e8a0bf2a9ced60f
[INFO] checking SullivanMuse/transform_rs against try#78c81ee3917a99dcff6e2e6822800f0492c415c3 for pr-148967
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSullivanMuse%2Ftransform_rs" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/SullivanMuse/transform_rs
[INFO] finished tweaking git repo https://github.com/SullivanMuse/transform_rs
[INFO] tweaked toml for git repo https://github.com/SullivanMuse/transform_rs written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/SullivanMuse/transform_rs on toolchain 78c81ee3917a99dcff6e2e6822800f0492c415c3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+78c81ee3917a99dcff6e2e6822800f0492c415c3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/SullivanMuse/transform_rs 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" "+78c81ee3917a99dcff6e2e6822800f0492c415c3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+78c81ee3917a99dcff6e2e6822800f0492c415c3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6f43bfac02c36322218a5c2526880569281e8fb19be9eaca34580ef592f11ee3
[INFO] running `Command { std: "docker" "start" "-a" "6f43bfac02c36322218a5c2526880569281e8fb19be9eaca34580ef592f11ee3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6f43bfac02c36322218a5c2526880569281e8fb19be9eaca34580ef592f11ee3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f43bfac02c36322218a5c2526880569281e8fb19be9eaca34580ef592f11ee3", kill_on_drop: false }`
[INFO] [stdout] 6f43bfac02c36322218a5c2526880569281e8fb19be9eaca34580ef592f11ee3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+78c81ee3917a99dcff6e2e6822800f0492c415c3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 516377cd3d8035f4fd2d439f0796ac6c81a77a80e81797e10c569ac32bdcf47d
[INFO] running `Command { std: "docker" "start" "-a" "516377cd3d8035f4fd2d439f0796ac6c81a77a80e81797e10c569ac32bdcf47d", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]     Checking transform_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Env` is never constructed
[INFO] [stdout]   --> src/main.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct Env {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/main.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct Sym(Rc<String>);
[INFO] [stdout]    |        --- ^^^^^^^^^^
[INFO] [stdout]    |        |
[INFO] [stdout]    |        field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `Sym` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/main.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     Int(i64),
[INFO] [stdout]    |     --- ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ExprBox` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 25 -     Int(i64),
[INFO] [stdout] 25 +     Int(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/main.rs:28:10
[INFO] [stdout]    |
[INFO] [stdout] 28 |     Name(Sym),
[INFO] [stdout]    |     ---- ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ExprBox` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 28 -     Name(Sym),
[INFO] [stdout] 28 +     Name(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/main.rs:31:10
[INFO] [stdout]    |
[INFO] [stdout] 31 |     List(Vec<Expr>),
[INFO] [stdout]    |     ---- ^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ExprBox` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 31 -     List(Vec<Expr>),
[INFO] [stdout] 31 +     List(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/main.rs:35:11
[INFO] [stdout]    |
[INFO] [stdout] 35 |     Quote(Expr),
[INFO] [stdout]    |     ----- ^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ExprBox` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 35 -     Quote(Expr),
[INFO] [stdout] 35 +     Quote(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Fn`, `Lam`, `Let`, `Set`, and `Do` are never constructed
[INFO] [stdout]   --> src/main.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | enum ExprBox {
[INFO] [stdout]    |      ------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 38 |     Fn(Sym, Vec<Sym>, Expr),
[INFO] [stdout]    |     ^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |     Lam(Vec<Sym>, Expr),
[INFO] [stdout]    |     ^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     Let(Sym, Expr, Expr),
[INFO] [stdout]    |     ^^^
[INFO] [stdout] ...
[INFO] [stdout] 47 |     Set(Sym, Expr),
[INFO] [stdout]    |     ^^^
[INFO] [stdout] ...
[INFO] [stdout] 50 |     Do(Vec<Expr>),
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ExprBox` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/main.rs:54:13
[INFO] [stdout]    |
[INFO] [stdout] 54 | struct Expr(Rc<ExprBox>);
[INFO] [stdout]    |        ---- ^^^^^^^^^^^
[INFO] [stdout]    |        |
[INFO] [stdout]    |        field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `Expr` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `kw` should have an upper case name
[INFO] [stdout]   --> src/main.rs:64:11
[INFO] [stdout]    |
[INFO] [stdout] 64 |     const kw: &[&'static str] = &[
[INFO] [stdout]    |           ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_upper_case_globals)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] help: convert the identifier to upper case (notice the capitalization)
[INFO] [stdout]    |
[INFO] [stdout] 64 -     const kw: &[&'static str] = &[
[INFO] [stdout] 64 +     const KW: &[&'static str] = &[
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Env` is never constructed
[INFO] [stdout]   --> src/main.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct Env {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/main.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct Sym(Rc<String>);
[INFO] [stdout]    |        --- ^^^^^^^^^^
[INFO] [stdout]    |        |
[INFO] [stdout]    |        field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `Sym` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/main.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     Int(i64),
[INFO] [stdout]    |     --- ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ExprBox` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 25 -     Int(i64),
[INFO] [stdout] 25 +     Int(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/main.rs:28:10
[INFO] [stdout]    |
[INFO] [stdout] 28 |     Name(Sym),
[INFO] [stdout]    |     ---- ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ExprBox` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 28 -     Name(Sym),
[INFO] [stdout] 28 +     Name(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/main.rs:31:10
[INFO] [stdout]    |
[INFO] [stdout] 31 |     List(Vec<Expr>),
[INFO] [stdout]    |     ---- ^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ExprBox` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 31 -     List(Vec<Expr>),
[INFO] [stdout] 31 +     List(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/main.rs:35:11
[INFO] [stdout]    |
[INFO] [stdout] 35 |     Quote(Expr),
[INFO] [stdout]    |     ----- ^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ExprBox` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 35 -     Quote(Expr),
[INFO] [stdout] 35 +     Quote(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Fn`, `Lam`, `Let`, `Set`, and `Do` are never constructed
[INFO] [stdout]   --> src/main.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | enum ExprBox {
[INFO] [stdout]    |      ------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 38 |     Fn(Sym, Vec<Sym>, Expr),
[INFO] [stdout]    |     ^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |     Lam(Vec<Sym>, Expr),
[INFO] [stdout]    |     ^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     Let(Sym, Expr, Expr),
[INFO] [stdout]    |     ^^^
[INFO] [stdout] ...
[INFO] [stdout] 47 |     Set(Sym, Expr),
[INFO] [stdout]    |     ^^^
[INFO] [stdout] ...
[INFO] [stdout] 50 |     Do(Vec<Expr>),
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ExprBox` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/main.rs:54:13
[INFO] [stdout]    |
[INFO] [stdout] 54 | struct Expr(Rc<ExprBox>);
[INFO] [stdout]    |        ---- ^^^^^^^^^^^
[INFO] [stdout]    |        |
[INFO] [stdout]    |        field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `Expr` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `kw` should have an upper case name
[INFO] [stdout]   --> src/main.rs:64:11
[INFO] [stdout]    |
[INFO] [stdout] 64 |     const kw: &[&'static str] = &[
[INFO] [stdout]    |           ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_upper_case_globals)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] help: convert the identifier to upper case (notice the capitalization)
[INFO] [stdout]    |
[INFO] [stdout] 64 -     const kw: &[&'static str] = &[
[INFO] [stdout] 64 +     const KW: &[&'static str] = &[
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:118:9
[INFO] [stdout]     |
[INFO] [stdout] 118 |         dbg!(expr(s));
[INFO] [stdout]     |         ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 118 |         let _ = dbg!(expr(s));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:118:9
[INFO] [stdout]     |
[INFO] [stdout] 118 |         dbg!(expr(s));
[INFO] [stdout]     |         ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 118 |         let _ = dbg!(expr(s));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.78s
[INFO] running `Command { std: "docker" "inspect" "516377cd3d8035f4fd2d439f0796ac6c81a77a80e81797e10c569ac32bdcf47d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "516377cd3d8035f4fd2d439f0796ac6c81a77a80e81797e10c569ac32bdcf47d", kill_on_drop: false }`
[INFO] [stdout] 516377cd3d8035f4fd2d439f0796ac6c81a77a80e81797e10c569ac32bdcf47d
