[INFO] fetching crate tass 0.5.0...
[INFO] checking tass-0.5.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate tass 0.5.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate tass 0.5.0 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 tass 0.5.0
[INFO] finished tweaking crates.io crate tass 0.5.0
[INFO] tweaked toml for crates.io crate tass 0.5.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate tass 0.5.0 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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded grep-matcher v0.1.5
[INFO] [stderr]   Downloaded grep-regex v0.1.9
[INFO] [stderr]   Downloaded hsl v0.1.1
[INFO] [stderr]   Downloaded serde v1.0.135
[INFO] [stderr]   Downloaded clap_derive v3.0.6
[INFO] [stderr]   Downloaded grep-searcher v0.1.8
[INFO] [stderr]   Downloaded clap v3.0.10
[INFO] [stderr]   Downloaded libc v0.2.113
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] ef4f6723b2e6cab8237b1eefa1bf56f43c4458c93a0923f773b20484b75c17c8
[INFO] running `Command { std: "docker" "start" "-a" "ef4f6723b2e6cab8237b1eefa1bf56f43c4458c93a0923f773b20484b75c17c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef4f6723b2e6cab8237b1eefa1bf56f43c4458c93a0923f773b20484b75c17c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef4f6723b2e6cab8237b1eefa1bf56f43c4458c93a0923f773b20484b75c17c8", kill_on_drop: false }`
[INFO] [stdout] ef4f6723b2e6cab8237b1eefa1bf56f43c4458c93a0923f773b20484b75c17c8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 951f3fb71da4f6bef531e72dab49ccf56f61de42f0f49ee3d78c81485ac834ea
[INFO] running `Command { std: "docker" "start" "-a" "951f3fb71da4f6bef531e72dab49ccf56f61de42f0f49ee3d78c81485ac834ea", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.113
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling serde v1.0.135
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling encoding_rs v0.8.30
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling signal-hook v0.3.13
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]     Checking lock_api v0.4.5
[INFO] [stderr]     Checking once_cell v1.9.0
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]    Compiling anyhow v1.0.53
[INFO] [stderr]     Checking thread_local v1.1.4
[INFO] [stderr]     Checking bytecount v0.6.2
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking fastrand v1.7.0
[INFO] [stderr]     Checking textwrap v0.14.2
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking hsl v0.1.1
[INFO] [stderr]     Checking pad v0.1.6
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking grep-matcher v0.1.5
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking mio v0.7.14
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking memmap2 v0.3.1
[INFO] [stderr]     Checking tempfile v3.3.0
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking encoding_rs_io v0.1.7
[INFO] [stderr]     Checking ndarray v0.15.4
[INFO] [stderr]     Checking signal-hook-mio v0.2.1
[INFO] [stderr]     Checking crossterm v0.22.1
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking grep-searcher v0.1.8
[INFO] [stderr]     Checking grep-regex v0.1.9
[INFO] [stderr]    Compiling clap_derive v3.0.6
[INFO] [stderr]     Checking clap v3.0.10
[INFO] [stderr]     Checking tass v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `BufReader` is imported redundantly
[INFO] [stdout]    --> src/index.rs:113:19
[INFO] [stdout]     |
[INFO] [stdout] 112 |     use super::*;
[INFO] [stdout]     |         -------- the item `BufReader` is already imported here
[INFO] [stdout] 113 |     use std::io::{BufReader, Cursor, Write};
[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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.54s
[INFO] running `Command { std: "docker" "inspect" "951f3fb71da4f6bef531e72dab49ccf56f61de42f0f49ee3d78c81485ac834ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "951f3fb71da4f6bef531e72dab49ccf56f61de42f0f49ee3d78c81485ac834ea", kill_on_drop: false }`
[INFO] [stdout] 951f3fb71da4f6bef531e72dab49ccf56f61de42f0f49ee3d78c81485ac834ea
[INFO] checking tass-0.5.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate tass 0.5.0 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate tass 0.5.0 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 tass 0.5.0
[INFO] finished tweaking crates.io crate tass 0.5.0
[INFO] tweaked toml for crates.io crate tass 0.5.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate crates.io crate tass 0.5.0 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] c66b6ab58c59e543f0375e2ea65e3a56d9034dd8dd7dadc9e7d89eb2750b113b
[INFO] running `Command { std: "docker" "start" "-a" "c66b6ab58c59e543f0375e2ea65e3a56d9034dd8dd7dadc9e7d89eb2750b113b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c66b6ab58c59e543f0375e2ea65e3a56d9034dd8dd7dadc9e7d89eb2750b113b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c66b6ab58c59e543f0375e2ea65e3a56d9034dd8dd7dadc9e7d89eb2750b113b", kill_on_drop: false }`
[INFO] [stdout] c66b6ab58c59e543f0375e2ea65e3a56d9034dd8dd7dadc9e7d89eb2750b113b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 0d141227975ce29bc9d6e6f9ebe9cc44f9a7df38faab49403e453b1a7e1a1c4d
[INFO] running `Command { std: "docker" "start" "-a" "0d141227975ce29bc9d6e6f9ebe9cc44f9a7df38faab49403e453b1a7e1a1c4d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.113
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling serde v1.0.135
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]    Compiling encoding_rs v0.8.30
[INFO] [stderr]    Compiling signal-hook v0.3.13
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]     Checking lock_api v0.4.5
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking once_cell v1.9.0
[INFO] [stderr]    Compiling anyhow v1.0.53
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking bytecount v0.6.2
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking thread_local v1.1.4
[INFO] [stderr]     Checking textwrap v0.14.2
[INFO] [stderr]     Checking fastrand v1.7.0
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking pad v0.1.6
[INFO] [stderr]     Checking hsl v0.1.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking grep-matcher v0.1.5
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking mio v0.7.14
[INFO] [stderr]     Checking memmap2 v0.3.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking tempfile v3.3.0
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking signal-hook-mio v0.2.1
[INFO] [stderr]     Checking encoding_rs_io v0.1.7
[INFO] [stderr]     Checking crossterm v0.22.1
[INFO] [stderr]     Checking ndarray v0.15.4
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]    Compiling clap_derive v3.0.6
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking grep-regex v0.1.9
[INFO] [stderr]     Checking grep-searcher v0.1.8
[INFO] [stderr]     Checking clap v3.0.10
[INFO] [stderr]     Checking tass v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `BufReader` is imported redundantly
[INFO] [stdout]    --> src/index.rs:113:19
[INFO] [stdout]     |
[INFO] [stdout] 112 |     use super::*;
[INFO] [stdout]     |         -------- the item `BufReader` is already imported here
[INFO] [stdout] 113 |     use std::io::{BufReader, Cursor, Write};
[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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.55s
[INFO] running `Command { std: "docker" "inspect" "0d141227975ce29bc9d6e6f9ebe9cc44f9a7df38faab49403e453b1a7e1a1c4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d141227975ce29bc9d6e6f9ebe9cc44f9a7df38faab49403e453b1a7e1a1c4d", kill_on_drop: false }`
[INFO] [stdout] 0d141227975ce29bc9d6e6f9ebe9cc44f9a7df38faab49403e453b1a7e1a1c4d