[INFO] fetching crate flycatcher 0.1.1...
[INFO] checking flycatcher-0.1.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate flycatcher 0.1.1 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate flycatcher 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 flycatcher 0.1.1
[INFO] finished tweaking crates.io crate flycatcher 0.1.1
[INFO] tweaked toml for crates.io crate flycatcher 0.1.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate flycatcher 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 flycatcherc-link v0.1.1
[INFO] [stderr]   Downloaded target-lexicon v0.12.2
[INFO] [stderr]   Downloaded logos v0.12.0
[INFO] [stderr]   Downloaded flycatcherc-clif v0.1.1
[INFO] [stderr]   Downloaded flycatcherc v0.1.1
[INFO] [stderr]   Downloaded flycatcher-lexer v0.1.1
[INFO] [stderr]   Downloaded flycatcher-parser v0.1.1
[INFO] [stderr]   Downloaded logos-derive v0.12.0
[INFO] [stderr]   Downloaded cranelift-frontend v0.76.0
[INFO] [stderr]   Downloaded beef v0.5.1
[INFO] [stderr]   Downloaded cranelift-codegen-shared v0.76.0
[INFO] [stderr]   Downloaded flycatcher-diagnostic v0.1.1
[INFO] [stderr]   Downloaded cranelift-object v0.76.0
[INFO] [stderr]   Downloaded proc-macro2 v1.0.28
[INFO] [stderr]   Downloaded cranelift v0.76.0
[INFO] [stderr]   Downloaded cranelift-module v0.76.0
[INFO] [stderr]   Downloaded cranelift-bforest v0.76.0
[INFO] [stderr]   Downloaded cranelift-entity v0.76.0
[INFO] [stderr]   Downloaded cranelift-codegen-meta v0.76.0
[INFO] [stderr]   Downloaded regalloc v0.0.31
[INFO] [stderr]   Downloaded object v0.26.1
[INFO] [stderr]   Downloaded libc v0.2.99
[INFO] [stderr]   Downloaded gimli v0.25.0
[INFO] [stderr]   Downloaded cranelift-codegen v0.76.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 8b9a82aa9cbe0ce2c3bc8252498f86366e4e990098a78b876a67fb67178cd7fa
[INFO] running `Command { std: "docker" "start" "-a" "8b9a82aa9cbe0ce2c3bc8252498f86366e4e990098a78b876a67fb67178cd7fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8b9a82aa9cbe0ce2c3bc8252498f86366e4e990098a78b876a67fb67178cd7fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b9a82aa9cbe0ce2c3bc8252498f86366e4e990098a78b876a67fb67178cd7fa", kill_on_drop: false }`
[INFO] [stdout] 8b9a82aa9cbe0ce2c3bc8252498f86366e4e990098a78b876a67fb67178cd7fa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 031a6b860f1ae26482442ab0d936a644e581673acc130f17762260396c12121a
[INFO] running `Command { std: "docker" "start" "-a" "031a6b860f1ae26482442ab0d936a644e581673acc130f17762260396c12121a", kill_on_drop: false }`
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.76.0
[INFO] [stderr]    Compiling cranelift-entity v0.76.0
[INFO] [stderr]    Compiling target-lexicon v0.12.2
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]     Checking regalloc v0.0.31
[INFO] [stderr]    Compiling utf8-ranges v1.0.4
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.76.0
[INFO] [stderr]     Checking cranelift-bforest v0.76.0
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling beef v0.5.1
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking gimli v0.25.0
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]     Checking codespan-reporting v0.11.1
[INFO] [stderr]    Compiling libc v0.2.99
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking flycatcher-diagnostic v0.1.1
[INFO] [stderr]     Checking flycatcherc-link v0.1.1
[INFO] [stderr]     Checking object v0.26.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling logos-derive v0.12.0
[INFO] [stderr]    Compiling cranelift-codegen v0.76.0
[INFO] [stderr]     Checking logos v0.12.0
[INFO] [stderr]     Checking flycatcher-lexer v0.1.1
[INFO] [stderr]     Checking flycatcher-parser v0.1.1
[INFO] [stderr]     Checking flycatcherc v0.1.1
[INFO] [stderr]     Checking cranelift-module v0.76.0
[INFO] [stderr]     Checking cranelift-frontend v0.76.0
[INFO] [stderr]     Checking cranelift-object v0.76.0
[INFO] [stderr]     Checking cranelift v0.76.0
[INFO] [stderr]     Checking flycatcherc-clif v0.1.1
[INFO] [stderr]     Checking flycatcher v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::str::FromStr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::str::FromStr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.67s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: cranelift-codegen-meta v0.76.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "031a6b860f1ae26482442ab0d936a644e581673acc130f17762260396c12121a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "031a6b860f1ae26482442ab0d936a644e581673acc130f17762260396c12121a", kill_on_drop: false }`
[INFO] [stdout] 031a6b860f1ae26482442ab0d936a644e581673acc130f17762260396c12121a
[INFO] checking flycatcher-0.1.1 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate flycatcher 0.1.1 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate flycatcher 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 flycatcher 0.1.1
[INFO] finished tweaking crates.io crate flycatcher 0.1.1
[INFO] tweaked toml for crates.io crate flycatcher 0.1.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate crates.io crate flycatcher 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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 85c9613c2df952cd4d4acbc89e7a9f2a61b05b9b45afdf2f210be06065872594
[INFO] running `Command { std: "docker" "start" "-a" "85c9613c2df952cd4d4acbc89e7a9f2a61b05b9b45afdf2f210be06065872594", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "85c9613c2df952cd4d4acbc89e7a9f2a61b05b9b45afdf2f210be06065872594", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85c9613c2df952cd4d4acbc89e7a9f2a61b05b9b45afdf2f210be06065872594", kill_on_drop: false }`
[INFO] [stdout] 85c9613c2df952cd4d4acbc89e7a9f2a61b05b9b45afdf2f210be06065872594
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 5293fef16041fad20edcc724e834aa7a91bad19a34e7db36a89f825a29a06090
[INFO] running `Command { std: "docker" "start" "-a" "5293fef16041fad20edcc724e834aa7a91bad19a34e7db36a89f825a29a06090", kill_on_drop: false }`
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling cranelift-entity v0.76.0
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.76.0
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling target-lexicon v0.12.2
[INFO] [stderr]     Checking regalloc v0.0.31
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]     Checking cranelift-bforest v0.76.0
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.76.0
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling utf8-ranges v1.0.4
[INFO] [stderr]    Compiling beef v0.5.1
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]     Checking codespan-reporting v0.11.1
[INFO] [stderr]     Checking gimli v0.25.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling libc v0.2.99
[INFO] [stderr]     Checking flycatcher-diagnostic v0.1.1
[INFO] [stderr]     Checking flycatcherc-link v0.1.1
[INFO] [stderr]     Checking object v0.26.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling logos-derive v0.12.0
[INFO] [stderr]    Compiling cranelift-codegen v0.76.0
[INFO] [stderr]     Checking logos v0.12.0
[INFO] [stderr]     Checking flycatcher-lexer v0.1.1
[INFO] [stderr]     Checking flycatcher-parser v0.1.1
[INFO] [stderr]     Checking flycatcherc v0.1.1
[INFO] [stderr]     Checking cranelift-module v0.76.0
[INFO] [stderr]     Checking cranelift-frontend v0.76.0
[INFO] [stderr]     Checking cranelift-object v0.76.0
[INFO] [stderr]     Checking cranelift v0.76.0
[INFO] [stderr]     Checking flycatcherc-clif v0.1.1
[INFO] [stderr]     Checking flycatcher v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::str::FromStr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::str::FromStr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.79s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: cranelift-codegen-meta v0.76.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "5293fef16041fad20edcc724e834aa7a91bad19a34e7db36a89f825a29a06090", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5293fef16041fad20edcc724e834aa7a91bad19a34e7db36a89f825a29a06090", kill_on_drop: false }`
[INFO] [stdout] 5293fef16041fad20edcc724e834aa7a91bad19a34e7db36a89f825a29a06090