[INFO] cloning repository https://github.com/wasabi315/stg-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wasabi315/stg-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwasabi315%2Fstg-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwasabi315%2Fstg-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 74b079e8c653bc899cb03abf1ef76cfe95b74963
[INFO] checking wasabi315/stg-rs against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwasabi315%2Fstg-rs" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wasabi315/stg-rs on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/wasabi315/stg-rs
[INFO] finished tweaking git repo https://github.com/wasabi315/stg-rs
[INFO] tweaked toml for git repo https://github.com/wasabi315/stg-rs written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/wasabi315/stg-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a74e552ae17f7d0bb21b860eaeea4ceb238173aa9abf430b9536723455781266
[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" "a74e552ae17f7d0bb21b860eaeea4ceb238173aa9abf430b9536723455781266", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a74e552ae17f7d0bb21b860eaeea4ceb238173aa9abf430b9536723455781266", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a74e552ae17f7d0bb21b860eaeea4ceb238173aa9abf430b9536723455781266", kill_on_drop: false }`
[INFO] [stdout] a74e552ae17f7d0bb21b860eaeea4ceb238173aa9abf430b9536723455781266
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ac889338b4f6a56bc9acd2374a4978d592163837bd0c3f46f3873a69a0ac1d60
[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" "ac889338b4f6a56bc9acd2374a4978d592163837bd0c3f46f3873a69a0ac1d60", 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] [stderr]     Checking pretty v0.10.0
[INFO] [stderr]     Checking stg-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `Let`
[INFO] [stdout]   --> src/stg/ast.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | /     Let {
[INFO] [stdout] 22 | |         rec: bool,
[INFO] [stdout] 23 | |         binds: Binds,
[INFO] [stdout] 24 | |         expr: Box<Expr>,
[INFO] [stdout] 25 | |     },
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ConstrApp`
[INFO] [stdout]   --> src/stg/ast.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | /     ConstrApp {
[INFO] [stdout] 35 | |         constr: Constr,
[INFO] [stdout] 36 | |         args: Vec<Atom>,
[INFO] [stdout] 37 | |     },
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `AlgAlts`
[INFO] [stdout]   --> src/stg/ast.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 51 |     AlgAlts(Vec<AlgAlt>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `fresh`
[INFO] [stdout]   --> src/stg/machine.rs:90:30
[INFO] [stdout]    |
[INFO] [stdout] 90 |     Exec { state: State<'a>, fresh: usize },
[INFO] [stdout]    |                              ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `and`
[INFO] [stdout]  --> src/stg/prelude.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn and() -> Program {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `or`
[INFO] [stdout]   --> src/stg/prelude.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn or() -> Program {
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `not`
[INFO] [stdout]   --> src/stg/prelude.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub fn not() -> Program {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fix`
[INFO] [stdout]   --> src/stg/prelude.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn fix() -> Program {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `seq`
[INFO] [stdout]   --> src/stg/prelude.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub fn seq() -> Program {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `id`
[INFO] [stdout]   --> src/stg/prelude.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub fn id() -> Program {
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `const_`
[INFO] [stdout]   --> src/stg/prelude.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn const_() -> Program {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `compose`
[INFO] [stdout]   --> src/stg/prelude.rs:68:8
[INFO] [stdout]    |
[INFO] [stdout] 68 | pub fn compose() -> Program {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fst`
[INFO] [stdout]   --> src/stg/prelude.rs:79:8
[INFO] [stdout]    |
[INFO] [stdout] 79 | pub fn fst() -> Program {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `snd`
[INFO] [stdout]   --> src/stg/prelude.rs:89:8
[INFO] [stdout]    |
[INFO] [stdout] 89 | pub fn snd() -> Program {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `curry`
[INFO] [stdout]   --> src/stg/prelude.rs:99:8
[INFO] [stdout]    |
[INFO] [stdout] 99 | pub fn curry() -> Program {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `uncurry`
[INFO] [stdout]    --> src/stg/prelude.rs:110:8
[INFO] [stdout]     |
[INFO] [stdout] 110 | pub fn uncurry() -> Program {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `swap`
[INFO] [stdout]    --> src/stg/prelude.rs:120:8
[INFO] [stdout]     |
[INFO] [stdout] 120 | pub fn swap() -> Program {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Let`
[INFO] [stdout]   --> src/stg/ast.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | /     Let {
[INFO] [stdout] 22 | |         rec: bool,
[INFO] [stdout] 23 | |         binds: Binds,
[INFO] [stdout] 24 | |         expr: Box<Expr>,
[INFO] [stdout] 25 | |     },
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ConstrApp`
[INFO] [stdout]   --> src/stg/ast.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | /     ConstrApp {
[INFO] [stdout] 35 | |         constr: Constr,
[INFO] [stdout] 36 | |         args: Vec<Atom>,
[INFO] [stdout] 37 | |     },
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `AlgAlts`
[INFO] [stdout]   --> src/stg/ast.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 51 |     AlgAlts(Vec<AlgAlt>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `fresh`
[INFO] [stdout]   --> src/stg/machine.rs:90:30
[INFO] [stdout]    |
[INFO] [stdout] 90 |     Exec { state: State<'a>, fresh: usize },
[INFO] [stdout]    |                              ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `and`
[INFO] [stdout]  --> src/stg/prelude.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn and() -> Program {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `or`
[INFO] [stdout]   --> src/stg/prelude.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn or() -> Program {
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `not`
[INFO] [stdout]   --> src/stg/prelude.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub fn not() -> Program {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fix`
[INFO] [stdout]   --> src/stg/prelude.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn fix() -> Program {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `seq`
[INFO] [stdout]   --> src/stg/prelude.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub fn seq() -> Program {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `id`
[INFO] [stdout]   --> src/stg/prelude.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub fn id() -> Program {
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `const_`
[INFO] [stdout]   --> src/stg/prelude.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn const_() -> Program {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `compose`
[INFO] [stdout]   --> src/stg/prelude.rs:68:8
[INFO] [stdout]    |
[INFO] [stdout] 68 | pub fn compose() -> Program {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fst`
[INFO] [stdout]   --> src/stg/prelude.rs:79:8
[INFO] [stdout]    |
[INFO] [stdout] 79 | pub fn fst() -> Program {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `snd`
[INFO] [stdout]   --> src/stg/prelude.rs:89:8
[INFO] [stdout]    |
[INFO] [stdout] 89 | pub fn snd() -> Program {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `curry`
[INFO] [stdout]   --> src/stg/prelude.rs:99:8
[INFO] [stdout]    |
[INFO] [stdout] 99 | pub fn curry() -> Program {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `uncurry`
[INFO] [stdout]    --> src/stg/prelude.rs:110:8
[INFO] [stdout]     |
[INFO] [stdout] 110 | pub fn uncurry() -> Program {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `swap`
[INFO] [stdout]    --> src/stg/prelude.rs:120:8
[INFO] [stdout]     |
[INFO] [stdout] 120 | pub fn swap() -> Program {
[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 2.97s
[INFO] running `Command { std: "docker" "inspect" "ac889338b4f6a56bc9acd2374a4978d592163837bd0c3f46f3873a69a0ac1d60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac889338b4f6a56bc9acd2374a4978d592163837bd0c3f46f3873a69a0ac1d60", kill_on_drop: false }`
[INFO] [stdout] ac889338b4f6a56bc9acd2374a4978d592163837bd0c3f46f3873a69a0ac1d60