[INFO] cloning repository https://github.com/kevinclark/rsearch
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kevinclark/rsearch" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkevinclark%2Frsearch", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkevinclark%2Frsearch'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6224acd7eb66e2d0386c82a31399c596506f6ba9
[INFO] checking kevinclark/rsearch against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkevinclark%2Frsearch" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kevinclark/rsearch 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/kevinclark/rsearch
[INFO] finished tweaking git repo https://github.com/kevinclark/rsearch
[INFO] tweaked toml for git repo https://github.com/kevinclark/rsearch written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/kevinclark/rsearch 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 quoted_printable v0.4.2
[INFO] [stderr]   Downloaded snafu v0.6.8
[INFO] [stderr]   Downloaded charset v0.1.2
[INFO] [stderr]   Downloaded snafu-derive v0.6.8
[INFO] [stderr]   Downloaded encoding_rs v0.8.22
[INFO] [stderr]   Downloaded mailparse v0.12.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] caf6034ec3b7ba27bf849015c75628bc3ac8b33c806c5a36ba030df8d3ceea6a
[INFO] running `Command { std: "docker" "start" "-a" "caf6034ec3b7ba27bf849015c75628bc3ac8b33c806c5a36ba030df8d3ceea6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "caf6034ec3b7ba27bf849015c75628bc3ac8b33c806c5a36ba030df8d3ceea6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "caf6034ec3b7ba27bf849015c75628bc3ac8b33c806c5a36ba030df8d3ceea6a", kill_on_drop: false }`
[INFO] [stdout] caf6034ec3b7ba27bf849015c75628bc3ac8b33c806c5a36ba030df8d3ceea6a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] dd2710b0b420cf9a5e7fa218a86efe6e3462d0e96333020f000e8ab57ae04f29
[INFO] running `Command { std: "docker" "start" "-a" "dd2710b0b420cf9a5e7fa218a86efe6e3462d0e96333020f000e8ab57ae04f29", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.12
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling syn v1.0.21
[INFO] [stderr]    Compiling encoding_rs v0.8.22
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking quoted_printable v0.4.2
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking unicode-segmentation v1.6.0
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]    Compiling quote v1.0.5
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking charset v0.1.2
[INFO] [stderr]     Checking mailparse v0.12.0
[INFO] [stderr]    Compiling snafu-derive v0.6.8
[INFO] [stderr]     Checking snafu v0.6.8
[INFO] [stderr]     Checking rsearch v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Vec` is imported redundantly
[INFO] [stdout]  --> src/lib.rs:1:71
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::HashSet, convert::TryFrom, io, io::prelude::*, vec::Vec};
[INFO] [stdout]   |                                                                       ^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Vec` is already defined here
[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: the item `mailparse` is imported redundantly
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use mailparse;
[INFO] [stdout]    |     ^^^^^^^^^ the item `mailparse` 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 `mailparse` is imported redundantly
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use mailparse;
[INFO] [stdout]    |     ^^^^^^^^^ the item `mailparse` 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 8.13s
[INFO] running `Command { std: "docker" "inspect" "dd2710b0b420cf9a5e7fa218a86efe6e3462d0e96333020f000e8ab57ae04f29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd2710b0b420cf9a5e7fa218a86efe6e3462d0e96333020f000e8ab57ae04f29", kill_on_drop: false }`
[INFO] [stdout] dd2710b0b420cf9a5e7fa218a86efe6e3462d0e96333020f000e8ab57ae04f29