[INFO] fetching crate followfile 0.2.1...
[INFO] testing followfile-0.2.1 against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] extracting crate followfile 0.2.1 into /workspace/builds/worker-3-tc1/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-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate followfile 0.2.1 on toolchain 8de4c7234dd9b97c9d76b58671343fdbbc9a433e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "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" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fbec0855371cef082d87b3aab0a603cb212debba19c6fef351494318bc9b1645
[INFO] running `Command { std: "docker" "start" "-a" "fbec0855371cef082d87b3aab0a603cb212debba19c6fef351494318bc9b1645", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fbec0855371cef082d87b3aab0a603cb212debba19c6fef351494318bc9b1645", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbec0855371cef082d87b3aab0a603cb212debba19c6fef351494318bc9b1645", kill_on_drop: false }`
[INFO] [stdout] fbec0855371cef082d87b3aab0a603cb212debba19c6fef351494318bc9b1645
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "build" "--frozen" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 68f1b21333400c7914c79d0db3ea1477f202bb3d762f5198f7a5490c52f5259e
[INFO] running `Command { std: "docker" "start" "-a" "68f1b21333400c7914c79d0db3ea1477f202bb3d762f5198f7a5490c52f5259e", 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 0.16s
[INFO] running `Command { std: "docker" "inspect" "68f1b21333400c7914c79d0db3ea1477f202bb3d762f5198f7a5490c52f5259e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68f1b21333400c7914c79d0db3ea1477f202bb3d762f5198f7a5490c52f5259e", kill_on_drop: false }`
[INFO] [stdout] 68f1b21333400c7914c79d0db3ea1477f202bb3d762f5198f7a5490c52f5259e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--no-run" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] bd4f0c8d9cf3412df1dd5ba5dbb1642e0b2dc91fce181ffe1ae3d2746f0b914e
[INFO] running `Command { std: "docker" "start" "-a" "bd4f0c8d9cf3412df1dd5ba5dbb1642e0b2dc91fce181ffe1ae3d2746f0b914e", 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 0.48s
[INFO] running `Command { std: "docker" "inspect" "bd4f0c8d9cf3412df1dd5ba5dbb1642e0b2dc91fce181ffe1ae3d2746f0b914e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd4f0c8d9cf3412df1dd5ba5dbb1642e0b2dc91fce181ffe1ae3d2746f0b914e", kill_on_drop: false }`
[INFO] [stdout] bd4f0c8d9cf3412df1dd5ba5dbb1642e0b2dc91fce181ffe1ae3d2746f0b914e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 64498fea6b95afd6028f3e7e493b3351b5acfad0253cf1c57390da5e95cf9fee
[INFO] running `Command { std: "docker" "start" "-a" "64498fea6b95afd6028f3e7e493b3351b5acfad0253cf1c57390da5e95cf9fee", 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 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/followfile-2aea8c604eb62343)
[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" "64498fea6b95afd6028f3e7e493b3351b5acfad0253cf1c57390da5e95cf9fee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64498fea6b95afd6028f3e7e493b3351b5acfad0253cf1c57390da5e95cf9fee", kill_on_drop: false }`
[INFO] [stdout] 64498fea6b95afd6028f3e7e493b3351b5acfad0253cf1c57390da5e95cf9fee