[INFO] cloning repository https://github.com/codesections/d5
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/codesections/d5" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcodesections%2Fd5", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcodesections%2Fd5'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a1b01de37e44e7c56581b22262e128ce015429d2
[INFO] checking codesections/d5 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcodesections%2Fd5" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/codesections/d5 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 git repo https://github.com/codesections/d5
[INFO] finished tweaking git repo https://github.com/codesections/d5
[INFO] tweaked toml for git repo https://github.com/codesections/d5 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/codesections/d5 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 matches v0.1.8
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[INFO] [stderr]   Downloaded phf_generator v0.7.24
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[INFO] [stderr]   Downloaded twoway v0.1.8
[INFO] [stderr]   Downloaded multipart v0.16.1
[INFO] [stderr]   Downloaded scoped-tls v1.0.0
[INFO] [stderr]   Downloaded ryu v1.0.0
[INFO] [stderr]   Downloaded serde_urlencoded v0.6.1
[INFO] [stderr]   Downloaded lock_api v0.3.1
[INFO] [stderr]   Downloaded parking_lot_core v0.6.2
[INFO] [stderr]   Downloaded slab v0.4.2
[INFO] [stderr]   Downloaded futures v0.1.29
[INFO] [stderr]   Downloaded tokio-executor v0.1.8
[INFO] [stderr]   Downloaded base64 v0.10.1
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[INFO] [stderr]   Downloaded rand_chacha v0.1.1
[INFO] [stderr]   Downloaded rand_hc v0.1.0
[INFO] [stderr]   Downloaded fuchsia-cprng v0.1.1
[INFO] [stderr]   Downloaded rand_core v0.3.1
[INFO] [stderr]   Downloaded rand_xorshift v0.1.1
[INFO] [stderr]   Downloaded block-padding v0.1.4
[INFO] [stderr]   Downloaded byte-tools v0.3.1
[INFO] [stderr]   Downloaded block-buffer v0.7.3
[INFO] [stderr]   Downloaded opaque-debug v0.2.3
[INFO] [stderr]   Downloaded smallvec v0.6.10
[INFO] [stderr]   Downloaded idna v0.2.0
[INFO] [stderr]   Downloaded bitflags v1.2.0
[INFO] [stderr]   Downloaded cloudabi v0.0.3
[INFO] [stderr]   Downloaded autocfg v0.1.6
[INFO] [stderr]   Downloaded rand_core v0.4.2
[INFO] [stderr]   Downloaded fake-simd v0.1.2
[INFO] [stderr]   Downloaded mime v0.2.6
[INFO] [stderr]   Downloaded unicode-normalization v0.1.8
[INFO] [stderr]   Downloaded tungstenite v0.9.1
[INFO] [stderr]   Downloaded warp v0.1.20
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 56c4681f75ad7247a3812ce66eec50ff94b8e93a2f341a89cce58a57c3e7bb97
[INFO] running `Command { std: "docker" "start" "-a" "56c4681f75ad7247a3812ce66eec50ff94b8e93a2f341a89cce58a57c3e7bb97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "56c4681f75ad7247a3812ce66eec50ff94b8e93a2f341a89cce58a57c3e7bb97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56c4681f75ad7247a3812ce66eec50ff94b8e93a2f341a89cce58a57c3e7bb97", kill_on_drop: false }`
[INFO] [stdout] 56c4681f75ad7247a3812ce66eec50ff94b8e93a2f341a89cce58a57c3e7bb97
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 84fe3e5f0a8f1fb4fb7a8d1711ea33dec187a2db91ee7e82b5228d569c856d19
[INFO] running `Command { std: "docker" "start" "-a" "84fe3e5f0a8f1fb4fb7a8d1711ea33dec187a2db91ee7e82b5228d569c856d19", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]     Checking futures v0.1.29
[INFO] [stderr]    Compiling autocfg v0.1.6
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking smallvec v0.6.10
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking scopeguard v1.0.0
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking mio v0.6.19
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]     Checking tokio-executor v0.1.8
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]     Checking lock_api v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling getrandom v0.1.12
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]     Checking http v0.1.18
[INFO] [stderr]     Checking tokio-sync v0.1.6
[INFO] [stderr]    Compiling unicase v2.5.1
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.5
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking tokio-reactor v0.1.10
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]     Checking block-padding v0.1.4
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]     Checking c2-chacha v0.2.2
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking unicode-normalization v0.1.8
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]    Compiling serde v1.0.101
[INFO] [stderr]    Compiling mime_guess v1.8.7
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking tokio-threadpool v0.1.16
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]    Compiling bitflags v1.2.0
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]     Checking sha-1 v0.8.1
[INFO] [stderr]     Checking tokio-fs v0.1.6
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]    Compiling mime_guess v2.0.1
[INFO] [stderr]     Checking tokio-uds v0.2.5
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking phf v0.7.24
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking tokio-udp v0.1.5
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio-current-thread v0.1.6
[INFO] [stderr]     Checking tokio-timer v0.2.11
[INFO] [stderr]     Checking string v0.2.1
[INFO] [stderr]     Checking tokio-buf v0.1.1
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking url v2.1.0
[INFO] [stderr]    Compiling hyper v0.12.35
[INFO] [stderr]     Checking try-lock v0.2.2
[INFO] [stderr]     Checking mime v0.3.14
[INFO] [stderr]     Checking indexmap v1.2.0
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]     Checking safemem v0.3.2
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking buf_redux v0.8.4
[INFO] [stderr]     Checking want v0.2.0
[INFO] [stderr]     Checking http-body v0.1.0
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking headers-core v0.1.1
[INFO] [stderr]     Checking twoway v0.1.8
[INFO] [stderr]     Checking input_buffer v0.2.0
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking quick-error v1.2.2
[INFO] [stderr]     Checking dtoa v0.4.4
[INFO] [stderr]     Checking utf-8 v0.7.5
[INFO] [stderr]     Checking headers v0.2.3
[INFO] [stderr]     Checking multipart v0.16.1
[INFO] [stderr]     Checking h2 v0.1.26
[INFO] [stderr]     Checking urlencoding v1.0.0
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]     Checking tungstenite v0.9.1
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]     Checking serde_json v1.0.41
[INFO] [stderr]     Checking warp v0.1.20
[INFO] [stderr]     Checking d5 v0.4.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `base64` is imported redundantly
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use base64;
[INFO] [stdout]   |     ^^^^^^ the item `base64` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `base64` is imported redundantly
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use base64;
[INFO] [stdout]   |     ^^^^^^ the item `base64` is already defined by prelude
[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 31.58s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: buf_redux v0.8.4, multipart v0.16.1
[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" "84fe3e5f0a8f1fb4fb7a8d1711ea33dec187a2db91ee7e82b5228d569c856d19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84fe3e5f0a8f1fb4fb7a8d1711ea33dec187a2db91ee7e82b5228d569c856d19", kill_on_drop: false }`
[INFO] [stdout] 84fe3e5f0a8f1fb4fb7a8d1711ea33dec187a2db91ee7e82b5228d569c856d19