[INFO] fetching crate elise 0.1.1...
[INFO] checking elise-0.1.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate elise 0.1.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate elise 0.1.1 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate elise 0.1.1
[INFO] finished tweaking crates.io crate elise 0.1.1
[INFO] tweaked toml for crates.io crate elise 0.1.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate elise 0.1.1 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded dashmap v5.3.4
[INFO] [stderr]   Downloaded elise-gc v0.1.1
[INFO] [stderr]   Downloaded elise-derive v0.1.1
[INFO] [stderr]   Downloaded env_logger v0.5.13
[INFO] [stderr]   Downloaded synstructure v0.9.0
[INFO] [stderr]   Downloaded crossbeam-queue v0.3.5
[INFO] [stderr]   Downloaded crossbeam v0.8.1
[INFO] [stderr]   Downloaded crossbeam-epoch v0.9.9
[INFO] [stderr]   Downloaded crossbeam-channel v0.5.5
[INFO] [stderr]   Downloaded syn v0.14.9
[INFO] [stderr]   Downloaded regex-syntax v0.6.26
[INFO] [stderr]   Downloaded regex v1.5.6
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.10
[INFO] [stderr]   Downloaded smallvec v1.9.0
[INFO] [stderr]   Downloaded once_cell v1.12.0
[INFO] [stderr]   Downloaded parking_lot_core v0.9.3
[INFO] [stderr]   Downloaded pin-cell v0.1.1
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aa7d75cfaf71eeae8f167d08f5977092a83f1411e62d02370f240f7d0bf1bac0
[INFO] running `Command { std: "docker" "start" "-a" "aa7d75cfaf71eeae8f167d08f5977092a83f1411e62d02370f240f7d0bf1bac0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aa7d75cfaf71eeae8f167d08f5977092a83f1411e62d02370f240f7d0bf1bac0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa7d75cfaf71eeae8f167d08f5977092a83f1411e62d02370f240f7d0bf1bac0", kill_on_drop: false }`
[INFO] [stdout] aa7d75cfaf71eeae8f167d08f5977092a83f1411e62d02370f240f7d0bf1bac0
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 801f323c2621ea35e5f88a4658f85984ebf4ea8bd2f5ead7c1598f349c1e793b
[INFO] running `Command { std: "docker" "start" "-a" "801f323c2621ea35e5f88a4658f85984ebf4ea8bd2f5ead7c1598f349c1e793b", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.10
[INFO] [stderr]     Checking once_cell v1.12.0
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.9
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling crossbeam-queue v0.3.5
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]     Checking smallvec v1.9.0
[INFO] [stderr]     Checking hashbrown v0.12.1
[INFO] [stderr]     Checking regex-syntax v0.6.26
[INFO] [stderr]     Checking pin-cell v0.1.1
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]     Checking crossbeam-channel v0.5.5
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking crossbeam v0.8.1
[INFO] [stderr]     Checking dashmap v5.3.4
[INFO] [stderr]     Checking elise-gc v0.1.1
[INFO] [stderr]     Checking regex v1.5.6
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stderr]    Compiling synstructure v0.9.0
[INFO] [stderr]    Compiling elise-derive v0.1.1
[INFO] [stderr]     Checking elise v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> examples/example.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `letroot`
[INFO] [stdout]  --> examples/example.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 | use elise::{letroot, Finalize, Gc, GcStore, HeapRoot, GC};
[INFO] [stdout]   |             ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.82s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: syn v0.14.9
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 5`
[INFO] running `Command { std: "docker" "inspect" "801f323c2621ea35e5f88a4658f85984ebf4ea8bd2f5ead7c1598f349c1e793b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "801f323c2621ea35e5f88a4658f85984ebf4ea8bd2f5ead7c1598f349c1e793b", kill_on_drop: false }`
[INFO] [stdout] 801f323c2621ea35e5f88a4658f85984ebf4ea8bd2f5ead7c1598f349c1e793b
[INFO] checking elise-0.1.1 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate elise 0.1.1 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate elise 0.1.1 on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate elise 0.1.1
[INFO] finished tweaking crates.io crate elise 0.1.1
[INFO] tweaked toml for crates.io crate elise 0.1.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate crates.io crate elise 0.1.1 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e0991a98b4dd36ccc284d4c879b00da6522281d25c4d8511ce775164df6294c2
[INFO] running `Command { std: "docker" "start" "-a" "e0991a98b4dd36ccc284d4c879b00da6522281d25c4d8511ce775164df6294c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e0991a98b4dd36ccc284d4c879b00da6522281d25c4d8511ce775164df6294c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0991a98b4dd36ccc284d4c879b00da6522281d25c4d8511ce775164df6294c2", kill_on_drop: false }`
[INFO] [stdout] e0991a98b4dd36ccc284d4c879b00da6522281d25c4d8511ce775164df6294c2
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f0cefe9321930cce73c8b6e759998f0130d8f98770548fa6b60afc041673f017
[INFO] running `Command { std: "docker" "start" "-a" "f0cefe9321930cce73c8b6e759998f0130d8f98770548fa6b60afc041673f017", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.10
[INFO] [stderr]     Checking once_cell v1.12.0
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.9
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]    Compiling crossbeam-queue v0.3.5
[INFO] [stderr]     Checking smallvec v1.9.0
[INFO] [stderr]     Checking hashbrown v0.12.1
[INFO] [stderr]     Checking pin-cell v0.1.1
[INFO] [stderr]     Checking regex-syntax v0.6.26
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]     Checking crossbeam-channel v0.5.5
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking crossbeam v0.8.1
[INFO] [stderr]     Checking dashmap v5.3.4
[INFO] [stderr]     Checking elise-gc v0.1.1
[INFO] [stderr]     Checking regex v1.5.6
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stderr]    Compiling synstructure v0.9.0
[INFO] [stderr]    Compiling elise-derive v0.1.1
[INFO] [stderr]     Checking elise v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> examples/example.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `letroot`
[INFO] [stdout]  --> examples/example.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 | use elise::{letroot, Finalize, Gc, GcStore, HeapRoot, GC};
[INFO] [stdout]   |             ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.96s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: syn v0.14.9
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 4`
[INFO] running `Command { std: "docker" "inspect" "f0cefe9321930cce73c8b6e759998f0130d8f98770548fa6b60afc041673f017", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0cefe9321930cce73c8b6e759998f0130d8f98770548fa6b60afc041673f017", kill_on_drop: false }`
[INFO] [stdout] f0cefe9321930cce73c8b6e759998f0130d8f98770548fa6b60afc041673f017