[INFO] fetching crate bracket-rex 0.8.7...
[INFO] checking bracket-rex-0.8.7 against master#80399064afa4a2cd153f30d02c25f7ea0383ed65 for opaque-soundness-fix
[INFO] extracting crate bracket-rex 0.8.7 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate bracket-rex 0.8.7 on toolchain 80399064afa4a2cd153f30d02c25f7ea0383ed65
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bracket-rex 0.8.7
[INFO] finished tweaking crates.io crate bracket-rex 0.8.7
[INFO] tweaked toml for crates.io crate bracket-rex 0.8.7 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bracket-color v0.8.7
[INFO] [stderr]   Downloaded bracket-embedding v0.8.7
[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" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] abfbfc1306d3c6163f6ee2ba00a5f5804806f5c5f75793399a757c3567f33cf7
[INFO] running `Command { std: "docker" "start" "-a" "abfbfc1306d3c6163f6ee2ba00a5f5804806f5c5f75793399a757c3567f33cf7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "abfbfc1306d3c6163f6ee2ba00a5f5804806f5c5f75793399a757c3567f33cf7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "abfbfc1306d3c6163f6ee2ba00a5f5804806f5c5f75793399a757c3567f33cf7", kill_on_drop: false }`
[INFO] [stdout] abfbfc1306d3c6163f6ee2ba00a5f5804806f5c5f75793399a757c3567f33cf7
[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" "+80399064afa4a2cd153f30d02c25f7ea0383ed65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 74e39d369b94d2cf81e9dbdd6530f6ccbddca09acd8b03404c6c2fd5ae20f265
[INFO] running `Command { std: "docker" "start" "-a" "74e39d369b94d2cf81e9dbdd6530f6ccbddca09acd8b03404c6c2fd5ae20f265", kill_on_drop: false }`
[INFO] [stderr]     Checking miniz_oxide v0.7.2
[INFO] [stderr]     Checking bracket-embedding v0.8.7
[INFO] [stderr]     Checking bracket-color v0.8.7
[INFO] [stderr]     Checking flate2 v1.0.28
[INFO] [stderr]     Checking bracket-rex v0.8.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Seek` is imported redundantly
[INFO] [stdout]    --> src/rex.rs:173:27
[INFO] [stdout]     |
[INFO] [stdout] 171 |     use super::*;
[INFO] [stdout]     |         -------- the item `Seek` is already imported here
[INFO] [stdout] 172 |     use std::fs::File;
[INFO] [stdout] 173 |     use std::io::{Cursor, Seek, SeekFrom};
[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 0.56s
[INFO] running `Command { std: "docker" "inspect" "74e39d369b94d2cf81e9dbdd6530f6ccbddca09acd8b03404c6c2fd5ae20f265", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74e39d369b94d2cf81e9dbdd6530f6ccbddca09acd8b03404c6c2fd5ae20f265", kill_on_drop: false }`
[INFO] [stdout] 74e39d369b94d2cf81e9dbdd6530f6ccbddca09acd8b03404c6c2fd5ae20f265
[INFO] checking bracket-rex-0.8.7 against master#09bc67b9158392361780e779d32997f14cc75c39 for opaque-soundness-fix
[INFO] extracting crate bracket-rex 0.8.7 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate bracket-rex 0.8.7 on toolchain 09bc67b9158392361780e779d32997f14cc75c39
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+09bc67b9158392361780e779d32997f14cc75c39" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bracket-rex 0.8.7
[INFO] finished tweaking crates.io crate bracket-rex 0.8.7
[INFO] tweaked toml for crates.io crate bracket-rex 0.8.7 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+09bc67b9158392361780e779d32997f14cc75c39" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+09bc67b9158392361780e779d32997f14cc75c39" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+09bc67b9158392361780e779d32997f14cc75c39" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1a52dd05171c5c369a5dec3e64f85ffb98914e00457ed69171563a4b4c0a1c5c
[INFO] running `Command { std: "docker" "start" "-a" "1a52dd05171c5c369a5dec3e64f85ffb98914e00457ed69171563a4b4c0a1c5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1a52dd05171c5c369a5dec3e64f85ffb98914e00457ed69171563a4b4c0a1c5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a52dd05171c5c369a5dec3e64f85ffb98914e00457ed69171563a4b4c0a1c5c", kill_on_drop: false }`
[INFO] [stdout] 1a52dd05171c5c369a5dec3e64f85ffb98914e00457ed69171563a4b4c0a1c5c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+09bc67b9158392361780e779d32997f14cc75c39" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0b770190fd25587c86ce5b272b7c9cc1416fa518244cd80be23c5f8ab7a1b005
[INFO] running `Command { std: "docker" "start" "-a" "0b770190fd25587c86ce5b272b7c9cc1416fa518244cd80be23c5f8ab7a1b005", kill_on_drop: false }`
[INFO] [stderr]     Checking miniz_oxide v0.7.2
[INFO] [stderr]     Checking bracket-color v0.8.7
[INFO] [stderr]     Checking bracket-embedding v0.8.7
[INFO] [stderr]     Checking flate2 v1.0.28
[INFO] [stderr]     Checking bracket-rex v0.8.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Seek` is imported redundantly
[INFO] [stdout]    --> src/rex.rs:173:27
[INFO] [stdout]     |
[INFO] [stdout] 171 |     use super::*;
[INFO] [stdout]     |         -------- the item `Seek` is already imported here
[INFO] [stdout] 172 |     use std::fs::File;
[INFO] [stdout] 173 |     use std::io::{Cursor, Seek, SeekFrom};
[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 0.56s
[INFO] running `Command { std: "docker" "inspect" "0b770190fd25587c86ce5b272b7c9cc1416fa518244cd80be23c5f8ab7a1b005", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b770190fd25587c86ce5b272b7c9cc1416fa518244cd80be23c5f8ab7a1b005", kill_on_drop: false }`
[INFO] [stdout] 0b770190fd25587c86ce5b272b7c9cc1416fa518244cd80be23c5f8ab7a1b005
