[INFO] fetching crate buf_stream 0.2.0...
[INFO] checking buf_stream-0.2.0 against master#b0696a5160711c068cb1f01b7437db7990d15750 for pr-121848
[INFO] extracting crate buf_stream 0.2.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate buf_stream 0.2.0 on toolchain b0696a5160711c068cb1f01b7437db7990d15750
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate buf_stream 0.2.0
[INFO] finished tweaking crates.io crate buf_stream 0.2.0
[INFO] tweaked toml for crates.io crate buf_stream 0.2.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "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" "+b0696a5160711c068cb1f01b7437db7990d15750" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+b0696a5160711c068cb1f01b7437db7990d15750" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4953edcc9b1019865fbed62d9d3cd0319cac55a6f70fd67b0a3c4dc7a09f28b1
[INFO] running `Command { std: "docker" "start" "-a" "4953edcc9b1019865fbed62d9d3cd0319cac55a6f70fd67b0a3c4dc7a09f28b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4953edcc9b1019865fbed62d9d3cd0319cac55a6f70fd67b0a3c4dc7a09f28b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4953edcc9b1019865fbed62d9d3cd0319cac55a6f70fd67b0a3c4dc7a09f28b1", kill_on_drop: false }`
[INFO] [stdout] 4953edcc9b1019865fbed62d9d3cd0319cac55a6f70fd67b0a3c4dc7a09f28b1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+b0696a5160711c068cb1f01b7437db7990d15750" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 42bd3a409e8eb303758318803666933a0adeec33a603ce94ac7464b72b19f3d5
[INFO] running `Command { std: "docker" "start" "-a" "42bd3a409e8eb303758318803666933a0adeec33a603ce94ac7464b72b19f3d5", kill_on_drop: false }`
[INFO] [stderr]     Checking buf_stream v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Seek` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:66:43
[INFO] [stdout]    |
[INFO] [stdout] 65 | use std::io::prelude::*;
[INFO] [stdout]    |     ------------------- the item `Seek` is already imported here
[INFO] [stdout] 66 | use std::io::{self, BufReader, BufWriter, Seek, SeekFrom};
[INFO] [stdout]    |                                           ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lib.rs:111:23
[INFO] [stdout]     |
[INFO] [stdout] 111 |         error::Error::description(self.error())
[INFO] [stdout]     |                       ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Seek` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:66:43
[INFO] [stdout]    |
[INFO] [stdout] 65 | use std::io::prelude::*;
[INFO] [stdout]    |     ------------------- the item `Seek` is already imported here
[INFO] [stdout] 66 | use std::io::{self, BufReader, BufWriter, Seek, SeekFrom};
[INFO] [stdout]    |                                           ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lib.rs:111:23
[INFO] [stdout]     |
[INFO] [stdout] 111 |         error::Error::description(self.error())
[INFO] [stdout]     |                       ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "42bd3a409e8eb303758318803666933a0adeec33a603ce94ac7464b72b19f3d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42bd3a409e8eb303758318803666933a0adeec33a603ce94ac7464b72b19f3d5", kill_on_drop: false }`
[INFO] [stdout] 42bd3a409e8eb303758318803666933a0adeec33a603ce94ac7464b72b19f3d5
[INFO] checking buf_stream-0.2.0 against try#bfe97fcae016881ad333f0ff8cea2cadb9cf136c for pr-121848
[INFO] extracting crate buf_stream 0.2.0 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate buf_stream 0.2.0 on toolchain bfe97fcae016881ad333f0ff8cea2cadb9cf136c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate buf_stream 0.2.0
[INFO] finished tweaking crates.io crate buf_stream 0.2.0
[INFO] tweaked toml for crates.io crate buf_stream 0.2.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "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" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 569f67c3b931dc2cc2b6913ac25cb354ef22ea0012c48980596addc92ea1733d
[INFO] running `Command { std: "docker" "start" "-a" "569f67c3b931dc2cc2b6913ac25cb354ef22ea0012c48980596addc92ea1733d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "569f67c3b931dc2cc2b6913ac25cb354ef22ea0012c48980596addc92ea1733d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "569f67c3b931dc2cc2b6913ac25cb354ef22ea0012c48980596addc92ea1733d", kill_on_drop: false }`
[INFO] [stdout] 569f67c3b931dc2cc2b6913ac25cb354ef22ea0012c48980596addc92ea1733d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 93e43f69b8e18924e61492cbde90af17d739801af7d30ca8cd90bacd1ae02969
[INFO] running `Command { std: "docker" "start" "-a" "93e43f69b8e18924e61492cbde90af17d739801af7d30ca8cd90bacd1ae02969", kill_on_drop: false }`
[INFO] [stderr]     Checking buf_stream v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Seek` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:66:43
[INFO] [stdout]    |
[INFO] [stdout] 65 | use std::io::prelude::*;
[INFO] [stdout]    |     ------------------- the item `Seek` is already imported here
[INFO] [stdout] 66 | use std::io::{self, BufReader, BufWriter, Seek, SeekFrom};
[INFO] [stdout]    |                                           ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lib.rs:111:23
[INFO] [stdout]     |
[INFO] [stdout] 111 |         error::Error::description(self.error())
[INFO] [stdout]     |                       ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Seek` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:66:43
[INFO] [stdout]    |
[INFO] [stdout] 65 | use std::io::prelude::*;
[INFO] [stdout]    |     ------------------- the item `Seek` is already imported here
[INFO] [stdout] 66 | use std::io::{self, BufReader, BufWriter, Seek, SeekFrom};
[INFO] [stdout]    |                                           ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lib.rs:111:23
[INFO] [stdout]     |
[INFO] [stdout] 111 |         error::Error::description(self.error())
[INFO] [stdout]     |                       ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "93e43f69b8e18924e61492cbde90af17d739801af7d30ca8cd90bacd1ae02969", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93e43f69b8e18924e61492cbde90af17d739801af7d30ca8cd90bacd1ae02969", kill_on_drop: false }`
[INFO] [stdout] 93e43f69b8e18924e61492cbde90af17d739801af7d30ca8cd90bacd1ae02969
