[INFO] fetching crate followfile 0.2.1...
[INFO] testing followfile-0.2.1 against try#b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b for pr-145330-1
[INFO] extracting crate followfile 0.2.1 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate followfile 0.2.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate followfile 0.2.1
[INFO] tweaked toml for crates.io crate followfile 0.2.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate followfile 0.2.1 on toolchain b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate followfile 0.2.1 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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ba1186cce9712a04d5ebcb45dd3446492ba9d3dcaa730fdbc323ac5bc4f9e50b
[INFO] running `Command { std: "docker" "start" "-a" "ba1186cce9712a04d5ebcb45dd3446492ba9d3dcaa730fdbc323ac5bc4f9e50b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ba1186cce9712a04d5ebcb45dd3446492ba9d3dcaa730fdbc323ac5bc4f9e50b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba1186cce9712a04d5ebcb45dd3446492ba9d3dcaa730fdbc323ac5bc4f9e50b", kill_on_drop: false }`
[INFO] [stdout] ba1186cce9712a04d5ebcb45dd3446492ba9d3dcaa730fdbc323ac5bc4f9e50b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f37e6d8de90c2b42b7fbcc63969b725bf853acb3ec480a33de20474a1b767cb3
[INFO] running `Command { std: "docker" "start" "-a" "f37e6d8de90c2b42b7fbcc63969b725bf853acb3ec480a33de20474a1b767cb3", kill_on_drop: false }`
[INFO] [stderr]    Compiling followfile v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/lib.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{self};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `inner`, `option`, and `watcher` are never read
[INFO] [stdout]   --> src/lib.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub struct FollowFile<R, W> {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout]  8 |     inner: R,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]  9 |     option: FollowOptions,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 10 |     watcher: Pin<Box<W>>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.20s
[INFO] running `Command { std: "docker" "inspect" "f37e6d8de90c2b42b7fbcc63969b725bf853acb3ec480a33de20474a1b767cb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f37e6d8de90c2b42b7fbcc63969b725bf853acb3ec480a33de20474a1b767cb3", kill_on_drop: false }`
[INFO] [stdout] f37e6d8de90c2b42b7fbcc63969b725bf853acb3ec480a33de20474a1b767cb3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 896b60c3c8e7798ace150f68857a57b8b325f444b06ff2d45f2d4244a96f8843
[INFO] running `Command { std: "docker" "start" "-a" "896b60c3c8e7798ace150f68857a57b8b325f444b06ff2d45f2d4244a96f8843", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/lib.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{self};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `inner`, `option`, and `watcher` are never read
[INFO] [stdout]   --> src/lib.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub struct FollowFile<R, W> {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout]  8 |     inner: R,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]  9 |     option: FollowOptions,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 10 |     watcher: Pin<Box<W>>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling followfile v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/lib.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{self};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `inner`, `option`, and `watcher` are never read
[INFO] [stdout]   --> src/lib.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub struct FollowFile<R, W> {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout]  8 |     inner: R,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]  9 |     option: FollowOptions,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 10 |     watcher: Pin<Box<W>>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `Command { std: "docker" "inspect" "896b60c3c8e7798ace150f68857a57b8b325f444b06ff2d45f2d4244a96f8843", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "896b60c3c8e7798ace150f68857a57b8b325f444b06ff2d45f2d4244a96f8843", kill_on_drop: false }`
[INFO] [stdout] 896b60c3c8e7798ace150f68857a57b8b325f444b06ff2d45f2d4244a96f8843
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 24332283779eed1c74cbded820aca397ba6a5a408c6d4977356f7619edf77052
[INFO] running `Command { std: "docker" "start" "-a" "24332283779eed1c74cbded820aca397ba6a5a408c6d4977356f7619edf77052", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `self`
[INFO] [stderr]  --> src/lib.rs:2:15
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io::{self};
[INFO] [stderr]   |               ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: fields `inner`, `option`, and `watcher` are never read
[INFO] [stderr]   --> src/lib.rs:8:5
[INFO] [stderr]    |
[INFO] [stderr]  7 | pub struct FollowFile<R, W> {
[INFO] [stderr]    |            ---------- fields in this struct
[INFO] [stderr]  8 |     inner: R,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]  9 |     option: FollowOptions,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 10 |     watcher: Pin<Box<W>>,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `followfile` (lib) generated 2 warnings (run `cargo fix --lib -p followfile` to apply 1 suggestion)
[INFO] [stderr] warning: `followfile` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/followfile-2acddc0d7a339f29)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests followfile
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "24332283779eed1c74cbded820aca397ba6a5a408c6d4977356f7619edf77052", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24332283779eed1c74cbded820aca397ba6a5a408c6d4977356f7619edf77052", kill_on_drop: false }`
[INFO] [stdout] 24332283779eed1c74cbded820aca397ba6a5a408c6d4977356f7619edf77052