[INFO] fetching crate rxp 0.2.0...
[INFO] checking rxp-0.2.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate rxp 0.2.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate rxp 0.2.0 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 rxp 0.2.0
[INFO] finished tweaking crates.io crate rxp 0.2.0
[INFO] tweaked toml for crates.io crate rxp 0.2.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate rxp 0.2.0 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]  Downloading crates ...
[INFO] [stderr]   Downloaded tracing v0.1.33
[INFO] [stderr]   Downloaded owo-colors v1.3.0
[INFO] [stderr]   Downloaded tracing-core v0.1.25
[INFO] [stderr]   Downloaded color-spantrace v0.1.6
[INFO] [stderr]   Downloaded tracing-error v0.1.2
[INFO] [stderr]   Downloaded color-eyre v0.5.11
[INFO] [stderr]   Downloaded typed-arena v2.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 80c56d7abe5fa3db065119b1505a7eb38965c5d14719bcee90ee31852e89969d
[INFO] running `Command { std: "docker" "start" "-a" "80c56d7abe5fa3db065119b1505a7eb38965c5d14719bcee90ee31852e89969d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "80c56d7abe5fa3db065119b1505a7eb38965c5d14719bcee90ee31852e89969d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80c56d7abe5fa3db065119b1505a7eb38965c5d14719bcee90ee31852e89969d", kill_on_drop: false }`
[INFO] [stdout] 80c56d7abe5fa3db065119b1505a7eb38965c5d14719bcee90ee31852e89969d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 22f0ef29b8d58b6db987ec4e3679cf4fac2b935475fb7b0a2e73b307a6e02cc0
[INFO] running `Command { std: "docker" "start" "-a" "22f0ef29b8d58b6db987ec4e3679cf4fac2b935475fb7b0a2e73b307a6e02cc0", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.89
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]     Checking once_cell v1.10.0
[INFO] [stderr]    Compiling semver v1.0.7
[INFO] [stderr]     Checking pin-project-lite v0.2.8
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking tracing-core v0.1.25
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking sharded-slab v0.1.4
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking thread_local v1.1.4
[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]    Compiling unicode-segmentation v1.9.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling eyre v0.6.8
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.8
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking owo-colors v1.3.0
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]     Checking object v0.27.1
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]     Checking indenter v0.3.3
[INFO] [stderr]     Checking crossbeam-channel v0.5.4
[INFO] [stderr]     Checking tracing-subscriber v0.2.25
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling quote v1.0.16
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking plotters-backend v0.3.2
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]    Compiling backtrace v0.3.64
[INFO] [stderr]     Checking plotters-svg v0.3.1
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking typed-arena v2.0.1
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking half v1.8.2
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking oorandom v11.1.3
[INFO] [stderr]     Checking plotters v0.3.1
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking addr2line v0.17.0
[INFO] [stderr]     Checking criterion-plot v0.4.4
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]    Compiling tracing-attributes v0.1.20
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Checking tracing v0.1.33
[INFO] [stderr]     Checking tracing-error v0.1.2
[INFO] [stderr]     Checking color-spantrace v0.1.6
[INFO] [stderr]     Checking color-eyre v0.5.11
[INFO] [stderr]     Checking rxp v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking criterion v0.3.5
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 26.93s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.3.5
[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" "22f0ef29b8d58b6db987ec4e3679cf4fac2b935475fb7b0a2e73b307a6e02cc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22f0ef29b8d58b6db987ec4e3679cf4fac2b935475fb7b0a2e73b307a6e02cc0", kill_on_drop: false }`
[INFO] [stdout] 22f0ef29b8d58b6db987ec4e3679cf4fac2b935475fb7b0a2e73b307a6e02cc0
[INFO] checking rxp-0.2.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate rxp 0.2.0 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate rxp 0.2.0 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 rxp 0.2.0
[INFO] finished tweaking crates.io crate rxp 0.2.0
[INFO] tweaked toml for crates.io crate rxp 0.2.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate crates.io crate rxp 0.2.0 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 6090d6ac14d79bd743ae39c0d1c149cd97139c68d0f80582d20669edb91317f8
[INFO] running `Command { std: "docker" "start" "-a" "6090d6ac14d79bd743ae39c0d1c149cd97139c68d0f80582d20669edb91317f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6090d6ac14d79bd743ae39c0d1c149cd97139c68d0f80582d20669edb91317f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6090d6ac14d79bd743ae39c0d1c149cd97139c68d0f80582d20669edb91317f8", kill_on_drop: false }`
[INFO] [stdout] 6090d6ac14d79bd743ae39c0d1c149cd97139c68d0f80582d20669edb91317f8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 13852fc01edf9c435ee5178b8dfd75ad3556a9190c5c1fb46ca9c42d4bbee06b
[INFO] running `Command { std: "docker" "start" "-a" "13852fc01edf9c435ee5178b8dfd75ad3556a9190c5c1fb46ca9c42d4bbee06b", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.89
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling semver v1.0.7
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]     Checking once_cell v1.10.0
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]     Checking pin-project-lite v0.2.8
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]     Checking tracing-core v0.1.25
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking sharded-slab v0.1.4
[INFO] [stderr]    Compiling unicode-segmentation v1.9.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking thread_local v1.1.4
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.8
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling eyre v0.6.8
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]     Checking owo-colors v1.3.0
[INFO] [stderr]     Checking indenter v0.3.3
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]     Checking object v0.27.1
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking tracing-subscriber v0.2.25
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking crossbeam-channel v0.5.4
[INFO] [stderr]    Compiling quote v1.0.16
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking plotters-backend v0.3.2
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]     Checking plotters-svg v0.3.1
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]    Compiling backtrace v0.3.64
[INFO] [stderr]     Checking half v1.8.2
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking typed-arena v2.0.1
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking oorandom v11.1.3
[INFO] [stderr]     Checking plotters v0.3.1
[INFO] [stderr]     Checking addr2line v0.17.0
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking criterion-plot v0.4.4
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]    Compiling tracing-attributes v0.1.20
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking tracing v0.1.33
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Checking tracing-error v0.1.2
[INFO] [stderr]     Checking color-spantrace v0.1.6
[INFO] [stderr]     Checking color-eyre v0.5.11
[INFO] [stderr]     Checking rxp v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking criterion v0.3.5
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 21.50s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.3.5
[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" "13852fc01edf9c435ee5178b8dfd75ad3556a9190c5c1fb46ca9c42d4bbee06b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13852fc01edf9c435ee5178b8dfd75ad3556a9190c5c1fb46ca9c42d4bbee06b", kill_on_drop: false }`
[INFO] [stdout] 13852fc01edf9c435ee5178b8dfd75ad3556a9190c5c1fb46ca9c42d4bbee06b