[INFO] cloning repository https://github.com/carvalhof/sim
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/carvalhof/sim" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarvalhof%2Fsim", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarvalhof%2Fsim'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d1849740aca9cdfba731bde1c55d186e8186e0db
[INFO] checking carvalhof/sim against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarvalhof%2Fsim" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/carvalhof/sim 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/carvalhof/sim
[INFO] finished tweaking git repo https://github.com/carvalhof/sim
[INFO] tweaked toml for git repo https://github.com/carvalhof/sim written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/carvalhof/sim 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]      Locking 12 packages
[INFO] [stderr]       Adding csv v1.3.0
[INFO] [stderr]       Adding csv-core v0.1.11
[INFO] [stderr]       Adding itoa v1.0.11
[INFO] [stderr]       Adding memchr v2.7.2
[INFO] [stderr]       Adding proc-macro2 v1.0.79
[INFO] [stderr]       Adding quote v1.0.35
[INFO] [stderr]       Adding rustc-serialize v0.3.25
[INFO] [stderr]       Adding ryu v1.0.17
[INFO] [stderr]       Adding serde v1.0.197
[INFO] [stderr]       Adding serde_derive v1.0.197
[INFO] [stderr]       Adding syn v2.0.58
[INFO] [stderr]       Adding unicode-ident v1.0.12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 3f1c5d13cf06e7052efe8eac3d5419388e7ccf56c4739194c8057a6b6104a3f9
[INFO] running `Command { std: "docker" "start" "-a" "3f1c5d13cf06e7052efe8eac3d5419388e7ccf56c4739194c8057a6b6104a3f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3f1c5d13cf06e7052efe8eac3d5419388e7ccf56c4739194c8057a6b6104a3f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f1c5d13cf06e7052efe8eac3d5419388e7ccf56c4739194c8057a6b6104a3f9", kill_on_drop: false }`
[INFO] [stdout] 3f1c5d13cf06e7052efe8eac3d5419388e7ccf56c4739194c8057a6b6104a3f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 08eb0d8ef5253c13a9d53c67d9ab1ac65ac1587a7da7048648e41cb90da7ab18
[INFO] running `Command { std: "docker" "start" "-a" "08eb0d8ef5253c13a9d53c67d9ab1ac65ac1587a7da7048648e41cb90da7ab18", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling portable-atomic v1.3.3
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]     Checking memchr v2.7.2
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking number_prefix v0.4.0
[INFO] [stderr]     Checking itoa v1.0.11
[INFO] [stderr]     Checking ryu v1.0.17
[INFO] [stderr]     Checking log v0.4.19
[INFO] [stderr]     Checking arrayvec v0.7.4
[INFO] [stderr]     Checking rustc-serialize v0.3.25
[INFO] [stderr]     Checking csv-core v0.1.11
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking console v0.15.7
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking indicatif v0.17.5
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking csv v1.3.0
[INFO] [stderr]     Checking sim v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `csv` is imported redundantly
[INFO] [stdout]   --> src/main.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | use csv;
[INFO] [stdout]    |     ^^^ the item `csv` 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 `csv` is imported redundantly
[INFO] [stdout]   --> src/main.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | use csv;
[INFO] [stdout]    |     ^^^ the item `csv` 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 7.19s
[INFO] running `Command { std: "docker" "inspect" "08eb0d8ef5253c13a9d53c67d9ab1ac65ac1587a7da7048648e41cb90da7ab18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08eb0d8ef5253c13a9d53c67d9ab1ac65ac1587a7da7048648e41cb90da7ab18", kill_on_drop: false }`
[INFO] [stdout] 08eb0d8ef5253c13a9d53c67d9ab1ac65ac1587a7da7048648e41cb90da7ab18