[INFO] fetching crate comde 0.2.3...
[INFO] checking comde-0.2.3 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate comde 0.2.3 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate comde 0.2.3 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 comde 0.2.3
[INFO] finished tweaking crates.io crate comde 0.2.3
[INFO] tweaked toml for crates.io crate comde 0.2.3 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 25 packages
[INFO] [stderr]       Adding brotli v3.5.0 (latest: v4.0.0)
[INFO] [stderr]       Adding brotli-decompressor v2.5.1 (latest: v3.0.0)
[INFO] [stderr]       Adding delegate v0.5.2 (latest: v0.12.0)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding zstd v0.7.0+zstd.1.4.9 (latest: v0.13.1)
[INFO] [stderr]       Adding zstd-safe v3.1.0+zstd.1.4.9 (latest: v7.1.0)
[INFO] [stderr]       Adding zstd-sys v1.5.0+zstd.1.4.9 (latest: v2.0.10+zstd.1.5.6)
[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 delegate v0.5.2
[INFO] [stderr]   Downloaded zstd-safe v3.1.0+zstd.1.4.9
[INFO] [stderr]   Downloaded zstd v0.7.0+zstd.1.4.9
[INFO] [stderr]   Downloaded brotli-decompressor v2.5.1
[INFO] [stderr]   Downloaded brotli v3.5.0
[INFO] [stderr]   Downloaded zstd-sys v1.5.0+zstd.1.4.9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] a39c622d1767aae44833a16bf3f58f2de8d4e6a98c296eede9eaa5b5cdce6d8f
[INFO] running `Command { std: "docker" "start" "-a" "a39c622d1767aae44833a16bf3f58f2de8d4e6a98c296eede9eaa5b5cdce6d8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a39c622d1767aae44833a16bf3f58f2de8d4e6a98c296eede9eaa5b5cdce6d8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a39c622d1767aae44833a16bf3f58f2de8d4e6a98c296eede9eaa5b5cdce6d8f", kill_on_drop: false }`
[INFO] [stdout] a39c622d1767aae44833a16bf3f58f2de8d4e6a98c296eede9eaa5b5cdce6d8f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 505b7cf47d5451c4f877114a2feaf2e34640d6affd361574fe93e2786c8945d5
[INFO] running `Command { std: "docker" "start" "-a" "505b7cf47d5451c4f877114a2feaf2e34640d6affd361574fe93e2786c8945d5", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling zstd-safe v3.1.0+zstd.1.4.9
[INFO] [stderr]    Compiling snap v1.1.1
[INFO] [stderr]    Compiling jobserver v0.1.28
[INFO] [stderr]     Checking brotli-decompressor v2.5.1
[INFO] [stderr]    Compiling cc v1.0.90
[INFO] [stderr]     Checking brotli v3.5.0
[INFO] [stderr]    Compiling zstd-sys v1.5.0+zstd.1.4.9
[INFO] [stderr]    Compiling lzma-sys v0.1.20
[INFO] [stderr]     Checking xz2 v0.1.7
[INFO] [stderr]    Compiling delegate v0.5.2
[INFO] [stderr]     Checking zstd v0.7.0+zstd.1.4.9
[INFO] [stderr]     Checking comde v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Seek` is imported redundantly
[INFO] [stdout]  --> src/brotli.rs:1:35
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{prelude::*, Result, Seek, SeekFrom};
[INFO] [stdout]   |               ----------          ^^^^
[INFO] [stdout]   |               |
[INFO] [stdout]   |               the item `Seek` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Seek` is imported redundantly
[INFO] [stdout]  --> src/snappy.rs:1:35
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{prelude::*, Result, Seek, SeekFrom};
[INFO] [stdout]   |               ----------          ^^^^
[INFO] [stdout]   |               |
[INFO] [stdout]   |               the item `Seek` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Seek` is imported redundantly
[INFO] [stdout]  --> src/brotli.rs:1:35
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{prelude::*, Result, Seek, SeekFrom};
[INFO] [stdout]   |               ----------          ^^^^
[INFO] [stdout]   |               |
[INFO] [stdout]   |               the item `Seek` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Seek` is imported redundantly
[INFO] [stdout]  --> src/deflate.rs:1:35
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{prelude::*, Result, Seek, SeekFrom};
[INFO] [stdout]   |               ----------          ^^^^
[INFO] [stdout]   |               |
[INFO] [stdout]   |               the item `Seek` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Seek` is imported redundantly
[INFO] [stdout]  --> src/snappy.rs:1:35
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{prelude::*, Result, Seek, SeekFrom};
[INFO] [stdout]   |               ----------          ^^^^
[INFO] [stdout]   |               |
[INFO] [stdout]   |               the item `Seek` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Seek` is imported redundantly
[INFO] [stdout]  --> src/deflate.rs:1:35
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{prelude::*, Result, Seek, SeekFrom};
[INFO] [stdout]   |               ----------          ^^^^
[INFO] [stdout]   |               |
[INFO] [stdout]   |               the item `Seek` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 41.71s
[INFO] running `Command { std: "docker" "inspect" "505b7cf47d5451c4f877114a2feaf2e34640d6affd361574fe93e2786c8945d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "505b7cf47d5451c4f877114a2feaf2e34640d6affd361574fe93e2786c8945d5", kill_on_drop: false }`
[INFO] [stdout] 505b7cf47d5451c4f877114a2feaf2e34640d6affd361574fe93e2786c8945d5