[INFO] fetching crate seek-ext 0.1.0...
[INFO] testing seek-ext-0.1.0 against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] extracting crate seek-ext 0.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate seek-ext 0.1.0 on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate seek-ext 0.1.0
[INFO] finished tweaking crates.io crate seek-ext 0.1.0
[INFO] tweaked toml for crates.io crate seek-ext 0.1.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ac72ee5560ca605c35f6478f191f1698a6bca266561de670e72888508966020a
[INFO] running `Command { std: "docker" "start" "-a" "ac72ee5560ca605c35f6478f191f1698a6bca266561de670e72888508966020a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ac72ee5560ca605c35f6478f191f1698a6bca266561de670e72888508966020a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac72ee5560ca605c35f6478f191f1698a6bca266561de670e72888508966020a", kill_on_drop: false }`
[INFO] [stdout] ac72ee5560ca605c35f6478f191f1698a6bca266561de670e72888508966020a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d3f88b6be23c3b50ff1b52dd736838e5a57b8bfb1298f6672fea4204c35ba559
[INFO] running `Command { std: "docker" "start" "-a" "d3f88b6be23c3b50ff1b52dd736838e5a57b8bfb1298f6672fea4204c35ba559", kill_on_drop: false }`
[INFO] [stderr]    Compiling seek-ext v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "d3f88b6be23c3b50ff1b52dd736838e5a57b8bfb1298f6672fea4204c35ba559", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3f88b6be23c3b50ff1b52dd736838e5a57b8bfb1298f6672fea4204c35ba559", kill_on_drop: false }`
[INFO] [stdout] d3f88b6be23c3b50ff1b52dd736838e5a57b8bfb1298f6672fea4204c35ba559
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6ef093d998f496c82d44249d9eee4b5e71a3afc4dbd04e6cd1785e3805bdc4ef
[INFO] running `Command { std: "docker" "start" "-a" "6ef093d998f496c82d44249d9eee4b5e71a3afc4dbd04e6cd1785e3805bdc4ef", kill_on_drop: false }`
[INFO] [stderr]    Compiling seek-ext v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stdout]   --> src/lib.rs:86:22
[INFO] [stdout]    |
[INFO] [stdout] 86 |         assert_eq!(c.stream_len().unwrap(), 15);
[INFO] [stdout]    |                      ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unstable_name_collisions)]` on by default
[INFO] [stdout]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `SeekExt::stream_len(...)` to keep using the current method
[INFO] [stdout]    = help: add `#![feature(seek_stream_len)]` to the crate attributes to enable `std::io::Seek::stream_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stdout]   --> src/lib.rs:90:22
[INFO] [stdout]    |
[INFO] [stdout] 90 |         assert_eq!(c.stream_len().unwrap(), 15);
[INFO] [stdout]    |                      ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `SeekExt::stream_len(...)` to keep using the current method
[INFO] [stdout]    = help: add `#![feature(seek_stream_len)]` to the crate attributes to enable `std::io::Seek::stream_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stdout]   --> src/lib.rs:96:22
[INFO] [stdout]    |
[INFO] [stdout] 96 |         assert_eq!(c.stream_len().unwrap(), 15);
[INFO] [stdout]    |                      ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `SeekExt::stream_len(...)` to keep using the current method
[INFO] [stdout]    = help: add `#![feature(seek_stream_len)]` to the crate attributes to enable `std::io::Seek::stream_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.72s
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6ef093d998f496c82d44249d9eee4b5e71a3afc4dbd04e6cd1785e3805bdc4ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ef093d998f496c82d44249d9eee4b5e71a3afc4dbd04e6cd1785e3805bdc4ef", kill_on_drop: false }`
[INFO] [stdout] 6ef093d998f496c82d44249d9eee4b5e71a3afc4dbd04e6cd1785e3805bdc4ef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 410856444c58d4eb332b3414122957ce3147f5408689dd75e86d0713c3a579a9
[INFO] running `Command { std: "docker" "start" "-a" "410856444c58d4eb332b3414122957ce3147f5408689dd75e86d0713c3a579a9", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stdout] running 2 tests
[INFO] [stderr]   --> src/lib.rs:86:22
[INFO] [stdout] test tests::stream_len ... ok
[INFO] [stderr]    |
[INFO] [stdout] test tests::current_position ... ok
[INFO] [stderr] 86 |         assert_eq!(c.stream_len().unwrap(), 15);
[INFO] [stdout] 
[INFO] [stderr]    |                      ^^^^^^^^^^
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr]    = note: `#[warn(unstable_name_collisions)]` on by default
[INFO] [stderr]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]    = help: call with fully qualified syntax `SeekExt::stream_len(...)` to keep using the current method
[INFO] [stderr]    = help: add `#![feature(seek_stream_len)]` to the crate attributes to enable `std::io::Seek::stream_len`
[INFO] [stderr] 
[INFO] [stderr] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stderr]   --> src/lib.rs:90:22
[INFO] [stderr]    |
[INFO] [stderr] 90 |         assert_eq!(c.stream_len().unwrap(), 15);
[INFO] [stderr]    |                      ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]    = help: call with fully qualified syntax `SeekExt::stream_len(...)` to keep using the current method
[INFO] [stderr]    = help: add `#![feature(seek_stream_len)]` to the crate attributes to enable `std::io::Seek::stream_len`
[INFO] [stderr] 
[INFO] [stderr] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stderr]   --> src/lib.rs:96:22
[INFO] [stderr]    |
[INFO] [stderr] 96 |         assert_eq!(c.stream_len().unwrap(), 15);
[INFO] [stderr]    |                      ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]    = help: call with fully qualified syntax `SeekExt::stream_len(...)` to keep using the current method
[INFO] [stderr]    = help: add `#![feature(seek_stream_len)]` to the crate attributes to enable `std::io::Seek::stream_len`
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/seek_ext-ad67862840b25c06)
[INFO] [stderr]    Doc-tests seek-ext
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - SeekExt::stream_len (line 28) ... ok
[INFO] [stdout] test src/lib.rs - SeekExt::current_position (line 55) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.31s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "410856444c58d4eb332b3414122957ce3147f5408689dd75e86d0713c3a579a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "410856444c58d4eb332b3414122957ce3147f5408689dd75e86d0713c3a579a9", kill_on_drop: false }`
[INFO] [stdout] 410856444c58d4eb332b3414122957ce3147f5408689dd75e86d0713c3a579a9