[INFO] cloning repository https://github.com/tez011/bubble
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tez011/bubble" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftez011%2Fbubble", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftez011%2Fbubble'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a6ab5e9ec5243d7e02e8ef48b9be88cebd7e869c
[INFO] checking tez011/bubble against try#54e27f559f23913c1d5afb1a0f0114e9e61b81b8 for pr-147589
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftez011%2Fbubble" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/tez011/bubble
[INFO] finished tweaking git repo https://github.com/tez011/bubble
[INFO] tweaked toml for git repo https://github.com/tez011/bubble written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tez011/bubble on toolchain 54e27f559f23913c1d5afb1a0f0114e9e61b81b8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+54e27f559f23913c1d5afb1a0f0114e9e61b81b8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/tez011/bubble 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" "+54e27f559f23913c1d5afb1a0f0114e9e61b81b8" "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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+54e27f559f23913c1d5afb1a0f0114e9e61b81b8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e6f087c90b96a5ce5c09e49f62797310be58f98f59349ee1b3bb9616dece7537
[INFO] running `Command { std: "docker" "start" "-a" "e6f087c90b96a5ce5c09e49f62797310be58f98f59349ee1b3bb9616dece7537", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e6f087c90b96a5ce5c09e49f62797310be58f98f59349ee1b3bb9616dece7537", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6f087c90b96a5ce5c09e49f62797310be58f98f59349ee1b3bb9616dece7537", kill_on_drop: false }`
[INFO] [stdout] e6f087c90b96a5ce5c09e49f62797310be58f98f59349ee1b3bb9616dece7537
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+54e27f559f23913c1d5afb1a0f0114e9e61b81b8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0753adeff0464fb3ba125b5f32779191bbbf1746d15f435877b134747b42e9bc
[INFO] running `Command { std: "docker" "start" "-a" "0753adeff0464fb3ba125b5f32779191bbbf1746d15f435877b134747b42e9bc", kill_on_drop: false }`
[INFO] [stderr]     Checking bubble v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `val` is never read
[INFO] [stdout]   --> src/cps.rs:91:31
[INFO] [stdout]    |
[INFO] [stdout] 91 |     LetLiteral { id: ValueID, val: LiteralD, body: Box<Expression> },
[INFO] [stdout]    |     ----------                ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Expression` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `operator` is never read
[INFO] [stdout]    --> src/cps.rs:110:26
[INFO] [stdout]     |
[INFO] [stdout] 110 |     InvalidApplication { operator: Atom },
[INFO] [stdout]     |     ------------------   ^^^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Error` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `operator`, `expected`, and `actual` are never read
[INFO] [stdout]    --> src/cps.rs:111:31
[INFO] [stdout]     |
[INFO] [stdout] 111 |     InvalidApplicationArity { operator: Atom, expected: Arity, actual: Arity },
[INFO] [stdout]     |     -----------------------   ^^^^^^^^        ^^^^^^^^         ^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     fields in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Error` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `expected` and `actual` are never read
[INFO] [stdout]    --> src/cps.rs:112:32
[INFO] [stdout]     |
[INFO] [stdout] 112 |     InvalidContinuationArity { expected: Arity, actual: Arity },
[INFO] [stdout]     |     ------------------------   ^^^^^^^^         ^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     fields in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Error` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `val` is never read
[INFO] [stdout]   --> src/cps.rs:91:31
[INFO] [stdout]    |
[INFO] [stdout] 91 |     LetLiteral { id: ValueID, val: LiteralD, body: Box<Expression> },
[INFO] [stdout]    |     ----------                ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Expression` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `operator` is never read
[INFO] [stdout]    --> src/cps.rs:110:26
[INFO] [stdout]     |
[INFO] [stdout] 110 |     InvalidApplication { operator: Atom },
[INFO] [stdout]     |     ------------------   ^^^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Error` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `ControlFlow` that must be used
[INFO] [stdout]    --> src/cps.rs:602:21
[INFO] [stdout]     |
[INFO] [stdout] 602 | /                     body.visit_mut((), |_, e| match e {
[INFO] [stdout] 603 | |                         Apply { operator: Atom::Variable(operator), operands, k, .. } if operator == id => {
[INFO] [stdout] 604 | |                             let mut n = *if applies == 1 { std::mem::take(&mut val.body) } else { val.body.clone() };
[INFO] [stdout] 605 | |                             n.rename(&val.formals, &*operands);
[INFO] [stdout] ...   |
[INFO] [stdout] 610 | |                         _ => ControlFlow::Continue(()),
[INFO] [stdout] 611 | |                     });
[INFO] [stdout]     | |______________________^
[INFO] [stdout]     |
[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] 602 |                     let _ = body.visit_mut((), |_, e| match e {
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `operator`, `expected`, and `actual` are never read
[INFO] [stdout]    --> src/cps.rs:111:31
[INFO] [stdout]     |
[INFO] [stdout] 111 |     InvalidApplicationArity { operator: Atom, expected: Arity, actual: Arity },
[INFO] [stdout]     |     -----------------------   ^^^^^^^^        ^^^^^^^^         ^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     fields in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Error` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `ControlFlow` that must be used
[INFO] [stdout]    --> src/cps.rs:630:21
[INFO] [stdout]     |
[INFO] [stdout] 630 | /                     body.visit_mut((), |_, e| match e {
[INFO] [stdout] 631 | |                         Continue { k: Continuation::Ref(ContinuationRef::To(k_id)), values } if k_id == id => {
[INFO] [stdout] 632 | |                             let mut n = *if applies == 1 { std::mem::take(&mut k.body) } else { k.body.clone() };
[INFO] [stdout] 633 | |                             n.rename(&k.formals, &*values);
[INFO] [stdout] ...   |
[INFO] [stdout] 637 | |                         _ => ControlFlow::Continue(()),
[INFO] [stdout] 638 | |                     });
[INFO] [stdout]     | |______________________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 630 |                     let _ = body.visit_mut((), |_, e| match e {
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `expected` and `actual` are never read
[INFO] [stdout]    --> src/cps.rs:112:32
[INFO] [stdout]     |
[INFO] [stdout] 112 |     InvalidContinuationArity { expected: Arity, actual: Arity },
[INFO] [stdout]     |     ------------------------   ^^^^^^^^         ^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     fields in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Error` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `ControlFlow` that must be used
[INFO] [stdout]    --> src/cps.rs:602:21
[INFO] [stdout]     |
[INFO] [stdout] 602 | /                     body.visit_mut((), |_, e| match e {
[INFO] [stdout] 603 | |                         Apply { operator: Atom::Variable(operator), operands, k, .. } if operator == id => {
[INFO] [stdout] 604 | |                             let mut n = *if applies == 1 { std::mem::take(&mut val.body) } else { val.body.clone() };
[INFO] [stdout] 605 | |                             n.rename(&val.formals, &*operands);
[INFO] [stdout] ...   |
[INFO] [stdout] 610 | |                         _ => ControlFlow::Continue(()),
[INFO] [stdout] 611 | |                     });
[INFO] [stdout]     | |______________________^
[INFO] [stdout]     |
[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] 602 |                     let _ = body.visit_mut((), |_, e| match e {
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `ControlFlow` that must be used
[INFO] [stdout]    --> src/cps.rs:630:21
[INFO] [stdout]     |
[INFO] [stdout] 630 | /                     body.visit_mut((), |_, e| match e {
[INFO] [stdout] 631 | |                         Continue { k: Continuation::Ref(ContinuationRef::To(k_id)), values } if k_id == id => {
[INFO] [stdout] 632 | |                             let mut n = *if applies == 1 { std::mem::take(&mut k.body) } else { k.body.clone() };
[INFO] [stdout] 633 | |                             n.rename(&k.formals, &*values);
[INFO] [stdout] ...   |
[INFO] [stdout] 637 | |                         _ => ControlFlow::Continue(()),
[INFO] [stdout] 638 | |                     });
[INFO] [stdout]     | |______________________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 630 |                     let _ = body.visit_mut((), |_, e| match e {
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `Command { std: "docker" "inspect" "0753adeff0464fb3ba125b5f32779191bbbf1746d15f435877b134747b42e9bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0753adeff0464fb3ba125b5f32779191bbbf1746d15f435877b134747b42e9bc", kill_on_drop: false }`
[INFO] [stdout] 0753adeff0464fb3ba125b5f32779191bbbf1746d15f435877b134747b42e9bc
