[INFO] cloning repository https://github.com/imbrem/refcomp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/imbrem/refcomp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fimbrem%2Frefcomp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fimbrem%2Frefcomp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 78115b8c4e7b719610fad9d7aa439b484d831899
[INFO] checking imbrem/refcomp/78115b8c4e7b719610fad9d7aa439b484d831899 against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fimbrem%2Frefcomp" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/imbrem/refcomp on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/imbrem/refcomp
[INFO] finished tweaking git repo https://github.com/imbrem/refcomp
[INFO] tweaked toml for git repo https://github.com/imbrem/refcomp written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/imbrem/refcomp 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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/TheDan64/inkwell`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded generic-array v0.9.0
[INFO] [stderr]   Downloaded llvm-sys v70.1.0
[INFO] [stderr]   Downloaded proc-macro2 v0.4.25
[INFO] [stderr]   Downloaded pest_meta v2.1.0
[INFO] [stderr]   Downloaded by_address v1.0.4
[INFO] [stderr]   Downloaded sha-1 v0.7.0
[INFO] [stderr]   Downloaded pest v2.1.0
[INFO] [stderr]   Downloaded syn v0.15.26
[INFO] [stderr]   Downloaded libc v0.2.47
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 45966bd18d6b6452cfc9985bd58ca6dd33196b8937643d8895cf8048aefb7afe
[INFO] running `Command { std: "docker" "start" "-a" "45966bd18d6b6452cfc9985bd58ca6dd33196b8937643d8895cf8048aefb7afe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "45966bd18d6b6452cfc9985bd58ca6dd33196b8937643d8895cf8048aefb7afe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45966bd18d6b6452cfc9985bd58ca6dd33196b8937643d8895cf8048aefb7afe", kill_on_drop: false }`
[INFO] [stdout] 45966bd18d6b6452cfc9985bd58ca6dd33196b8937643d8895cf8048aefb7afe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5ec2e4393397f7b5553688b5a36ed0cc79797282a0692da6a5f2138b8a15af41
[INFO] running `Command { std: "docker" "start" "-a" "5ec2e4393397f7b5553688b5a36ed0cc79797282a0692da6a5f2138b8a15af41", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.47
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling proc-macro2 v0.4.25
[INFO] [stderr]    Compiling ucd-util v0.1.3
[INFO] [stderr]    Compiling lazy_static v1.2.0
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling utf8-ranges v1.0.2
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling cc v1.0.28
[INFO] [stderr]    Compiling ucd-trie v0.1.1
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling maplit v1.0.1
[INFO] [stderr]    Compiling inkwell v0.1.0 (https://github.com/TheDan64/inkwell?branch=llvm7-0#ae238f05)
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling regex-syntax v0.6.4
[INFO] [stderr]    Compiling pest v2.1.0
[INFO] [stderr]     Checking either v1.5.0
[INFO] [stderr]     Checking by_address v1.0.4
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling memchr v2.1.2
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]    Compiling pest_meta v2.1.0
[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]    Compiling enum-methods v0.0.8
[INFO] [stderr]    Compiling pest_generator v2.1.0
[INFO] [stderr]    Compiling inkwell_internal_macros v0.1.0 (https://github.com/TheDan64/inkwell?branch=llvm7-0#ae238f05)
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling llvm-sys v70.1.0
[INFO] [stderr]     Checking refcomp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused closure that must be used
[INFO] [stdout]    --> src/ast/table.rs:100:9
[INFO] [stdout]     |
[INFO] [stdout] 100 | /         scope.visit_dependencies(|v : Rc<Variable>| {
[INFO] [stdout] 101 | |             if v.get_level().unwrap_or_else(|| {
[INFO] [stdout] 102 | |                 panic!("Variable \"{}\" has no level.\nVariable dump:\n{:?}", v.get_name(), v)
[INFO] [stdout] 103 | |             }) < self.get_level().unwrap_or_else(|| {
[INFO] [stdout] ...   |
[INFO] [stdout] 114 | |             }
[INFO] [stdout] 115 | |         });
[INFO] [stdout]     | |__________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: closures are lazy and do nothing unless called
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused closure that must be used
[INFO] [stdout]    --> src/ast/table.rs:100:9
[INFO] [stdout]     |
[INFO] [stdout] 100 | /         scope.visit_dependencies(|v : Rc<Variable>| {
[INFO] [stdout] 101 | |             if v.get_level().unwrap_or_else(|| {
[INFO] [stdout] 102 | |                 panic!("Variable \"{}\" has no level.\nVariable dump:\n{:?}", v.get_name(), v)
[INFO] [stdout] 103 | |             }) < self.get_level().unwrap_or_else(|| {
[INFO] [stdout] ...   |
[INFO] [stdout] 114 | |             }
[INFO] [stdout] 115 | |         });
[INFO] [stdout]     | |__________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: closures are lazy and do nothing unless called
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.54s
[INFO] running `Command { std: "docker" "inspect" "5ec2e4393397f7b5553688b5a36ed0cc79797282a0692da6a5f2138b8a15af41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ec2e4393397f7b5553688b5a36ed0cc79797282a0692da6a5f2138b8a15af41", kill_on_drop: false }`
[INFO] [stdout] 5ec2e4393397f7b5553688b5a36ed0cc79797282a0692da6a5f2138b8a15af41
[INFO] checking imbrem/refcomp/78115b8c4e7b719610fad9d7aa439b484d831899 against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fimbrem%2Frefcomp" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/imbrem/refcomp on toolchain 6289438dbad80b1a0029c66dd3f6abf57c2c51be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/imbrem/refcomp
[INFO] finished tweaking git repo https://github.com/imbrem/refcomp
[INFO] tweaked toml for git repo https://github.com/imbrem/refcomp written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/imbrem/refcomp 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" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 140d9392d6bbfeb7bddff1e3a804686fe930fbfb30033f4e1f985a1b7360d693
[INFO] running `Command { std: "docker" "start" "-a" "140d9392d6bbfeb7bddff1e3a804686fe930fbfb30033f4e1f985a1b7360d693", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "140d9392d6bbfeb7bddff1e3a804686fe930fbfb30033f4e1f985a1b7360d693", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "140d9392d6bbfeb7bddff1e3a804686fe930fbfb30033f4e1f985a1b7360d693", kill_on_drop: false }`
[INFO] [stdout] 140d9392d6bbfeb7bddff1e3a804686fe930fbfb30033f4e1f985a1b7360d693
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 825371819e5cdd89c6caeb3605d3c1e88dab3a9ccef653ccc4f7fe0c874c25ed
[INFO] running `Command { std: "docker" "start" "-a" "825371819e5cdd89c6caeb3605d3c1e88dab3a9ccef653ccc4f7fe0c874c25ed", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.47
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling proc-macro2 v0.4.25
[INFO] [stderr]    Compiling ucd-util v0.1.3
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling lazy_static v1.2.0
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling utf8-ranges v1.0.2
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling cc v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling ucd-trie v0.1.1
[INFO] [stderr]    Compiling maplit v1.0.1
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling inkwell v0.1.0 (https://github.com/TheDan64/inkwell?branch=llvm7-0#ae238f05)
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking either v1.5.0
[INFO] [stderr]    Compiling pest v2.1.0
[INFO] [stderr]    Compiling regex-syntax v0.6.4
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking by_address v1.0.4
[INFO] [stderr]    Compiling memchr v2.1.2
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling pest_meta v2.1.0
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]    Compiling enum-methods v0.0.8
[INFO] [stderr]    Compiling pest_generator v2.1.0
[INFO] [stderr]    Compiling llvm-sys v70.1.0
[INFO] [stderr]    Compiling inkwell_internal_macros v0.1.0 (https://github.com/TheDan64/inkwell?branch=llvm7-0#ae238f05)
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking refcomp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused closure that must be used
[INFO] [stdout]    --> src/ast/table.rs:100:9
[INFO] [stdout]     |
[INFO] [stdout] 100 | /         scope.visit_dependencies(|v : Rc<Variable>| {
[INFO] [stdout] 101 | |             if v.get_level().unwrap_or_else(|| {
[INFO] [stdout] 102 | |                 panic!("Variable \"{}\" has no level.\nVariable dump:\n{:?}", v.get_name(), v)
[INFO] [stdout] 103 | |             }) < self.get_level().unwrap_or_else(|| {
[INFO] [stdout] ...   |
[INFO] [stdout] 114 | |             }
[INFO] [stdout] 115 | |         });
[INFO] [stdout]     | |__________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: closures are lazy and do nothing unless called
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused closure that must be used
[INFO] [stdout]    --> src/ast/table.rs:100:9
[INFO] [stdout]     |
[INFO] [stdout] 100 | /         scope.visit_dependencies(|v : Rc<Variable>| {
[INFO] [stdout] 101 | |             if v.get_level().unwrap_or_else(|| {
[INFO] [stdout] 102 | |                 panic!("Variable \"{}\" has no level.\nVariable dump:\n{:?}", v.get_name(), v)
[INFO] [stdout] 103 | |             }) < self.get_level().unwrap_or_else(|| {
[INFO] [stdout] ...   |
[INFO] [stdout] 114 | |             }
[INFO] [stdout] 115 | |         });
[INFO] [stdout]     | |__________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: closures are lazy and do nothing unless called
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.07s
[INFO] running `Command { std: "docker" "inspect" "825371819e5cdd89c6caeb3605d3c1e88dab3a9ccef653ccc4f7fe0c874c25ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "825371819e5cdd89c6caeb3605d3c1e88dab3a9ccef653ccc4f7fe0c874c25ed", kill_on_drop: false }`
[INFO] [stdout] 825371819e5cdd89c6caeb3605d3c1e88dab3a9ccef653ccc4f7fe0c874c25ed