[INFO] cloning repository https://github.com/paulprimus/tail [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/paulprimus/tail" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpaulprimus%2Ftail"` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpaulprimus%2Ftail'... [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] b563c017437b58995ce357b016ddeb653fac1f5a [INFO] checking paulprimus/tail against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpaulprimus%2Ftail" "/workspace/builds/worker-6/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/paulprimus/tail on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d [INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/paulprimus/tail [INFO] finished tweaking git repo https://github.com/paulprimus/tail [INFO] tweaked toml for git repo https://github.com/paulprimus/tail written to /workspace/builds/worker-6/source/Cargo.toml [INFO] crate git repo https://github.com/paulprimus/tail already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] c688d2f75dcf67afb36f49e15e72a226c5a7747339c4436c40e003e32ae1c01f [INFO] running `"docker" "start" "-a" "c688d2f75dcf67afb36f49e15e72a226c5a7747339c4436c40e003e32ae1c01f"` [INFO] [stderr] Compiling autocfg v1.0.0 [INFO] [stderr] Compiling proc-macro2 v1.0.10 [INFO] [stderr] Checking cfg-if v0.1.10 [INFO] [stderr] Compiling unicode-xid v0.2.0 [INFO] [stderr] Compiling pkg-config v0.3.17 [INFO] [stderr] Compiling cc v1.0.50 [INFO] [stderr] Checking fnv v1.0.6 [INFO] [stderr] Checking slab v0.4.2 [INFO] [stderr] Compiling memchr v2.3.3 [INFO] [stderr] Checking bytes v0.5.4 [INFO] [stderr] Checking futures-core v0.3.4 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Checking arc-swap v0.4.5 [INFO] [stderr] Checking pin-project-lite v0.1.4 [INFO] [stderr] Compiling openssl v0.10.28 [INFO] [stderr] Checking futures-sink v0.3.4 [INFO] [stderr] Checking pin-utils v0.1.0-alpha.4 [INFO] [stderr] Checking unicode-width v0.1.7 [INFO] [stderr] Checking tower-service v0.3.0 [INFO] [stderr] Checking vec_map v0.8.1 [INFO] [stderr] Checking ansi_term v0.11.0 [INFO] [stderr] Checking strsim v0.8.0 [INFO] [stderr] Compiling syn v1.0.17 [INFO] [stderr] Checking foreign-types v0.3.2 [INFO] [stderr] Compiling httparse v1.3.4 [INFO] [stderr] Checking futures-channel v0.3.4 [INFO] [stderr] Checking futures-util v0.3.4 [INFO] [stderr] Checking log v0.4.8 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking net2 v0.2.33 [INFO] [stderr] Checking iovec v0.1.4 [INFO] [stderr] Checking num_cpus v1.12.0 [INFO] [stderr] Checking time v0.1.42 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking signal-hook-registry v1.2.0 [INFO] [stderr] Checking want v0.3.0 [INFO] [stderr] Checking http v0.2.1 [INFO] [stderr] Checking clap v2.33.0 [INFO] [stderr] Checking mio v0.6.21 [INFO] [stderr] Compiling indexmap v1.3.2 [INFO] [stderr] Compiling openssl-sys v0.9.54 [INFO] [stderr] Compiling quote v1.0.3 [INFO] [stderr] Checking mio-uds v0.6.7 [INFO] [stderr] Compiling native-tls v0.2.4 [INFO] [stderr] Checking http-body v0.3.1 [INFO] [stderr] Compiling tokio-macros v0.2.5 [INFO] [stderr] Compiling pin-project-internal v0.4.8 [INFO] [stderr] Checking tokio v0.2.15 [INFO] [stderr] Checking pin-project v0.4.8 [INFO] [stderr] Checking tokio-util v0.3.1 [INFO] [stderr] Checking tokio-tls v0.3.0 [INFO] [stderr] Checking h2 v0.2.4 [INFO] [stderr] Checking hyper v0.13.4 [INFO] [stderr] Checking hyper-tls v0.4.1 [INFO] [stderr] Checking tail v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused imports: `Bytes`, `Error` [INFO] [stderr] --> src/main.rs:6:35 [INFO] [stderr] | [INFO] [stderr] 6 | use std::io::{BufRead, BufReader, Bytes, Error, Read, Seek, SeekFrom, Write}; [INFO] [stderr] | ^^^^^ ^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `Buf` [INFO] [stderr] --> src/main.rs:12:19 [INFO] [stderr] | [INFO] [stderr] 12 | use hyper::body::{Buf, HttpBody}; [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: unused imports: `Bytes`, `Error` [INFO] [stderr] --> src/main.rs:6:35 [INFO] [stderr] | [INFO] [stderr] 6 | use std::io::{BufRead, BufReader, Bytes, Error, Read, Seek, SeekFrom, Write}; [INFO] [stderr] | ^^^^^ ^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `Buf` [INFO] [stderr] --> src/main.rs:12:19 [INFO] [stderr] | [INFO] [stderr] 12 | use hyper::body::{Buf, HttpBody}; [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:93:13 [INFO] [stderr] | [INFO] [stderr] 93 | let mut chunk = match next { [INFO] [stderr] | ----^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unreachable expression [INFO] [stderr] --> src/main.rs:129:5 [INFO] [stderr] | [INFO] [stderr] 115 | / loop { [INFO] [stderr] 116 | | std::thread::sleep(Duration::from_secs(3)); [INFO] [stderr] 117 | | cur_seek_pos = reader.seek(SeekFrom::End(0))?; [INFO] [stderr] 118 | | if cur_seek_pos > last_seek_pos { [INFO] [stderr] ... | [INFO] [stderr] 127 | | last_seek_pos = cur_seek_pos; [INFO] [stderr] 128 | | } [INFO] [stderr] | |_____- any code following this expression is unreachable [INFO] [stderr] 129 | Ok(()) [INFO] [stderr] | ^^^^^^ unreachable expression [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unreachable_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unreachable pattern [INFO] [stderr] --> src/main.rs:185:13 [INFO] [stderr] | [INFO] [stderr] 185 | _ => {} [INFO] [stderr] | ^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unreachable_patterns)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `num` [INFO] [stderr] --> src/main.rs:104:27 [INFO] [stderr] | [INFO] [stderr] 104 | fn follow(filename: &str, num: usize) -> io::Result<()> { [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_num` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:93:13 [INFO] [stderr] | [INFO] [stderr] 93 | let mut chunk = match next { [INFO] [stderr] | ----^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function `readPage` should have a snake case name [INFO] [stderr] --> src/main.rs:67:10 [INFO] [stderr] | [INFO] [stderr] 67 | async fn readPage(url: &str) -> Result<(), Box> { [INFO] [stderr] | ^^^^^^^^ help: convert the identifier to snake case: `read_page` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(non_snake_case)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:75:5 [INFO] [stderr] | [INFO] [stderr] 75 | fetch_url(uri).await; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unreachable expression [INFO] [stderr] --> src/main.rs:129:5 [INFO] [stderr] | [INFO] [stderr] 115 | / loop { [INFO] [stderr] 116 | | std::thread::sleep(Duration::from_secs(3)); [INFO] [stderr] 117 | | cur_seek_pos = reader.seek(SeekFrom::End(0))?; [INFO] [stderr] 118 | | if cur_seek_pos > last_seek_pos { [INFO] [stderr] ... | [INFO] [stderr] 127 | | last_seek_pos = cur_seek_pos; [INFO] [stderr] 128 | | } [INFO] [stderr] | |_____- any code following this expression is unreachable [INFO] [stderr] 129 | Ok(()) [INFO] [stderr] | ^^^^^^ unreachable expression [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unreachable_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unreachable pattern [INFO] [stderr] --> src/main.rs:185:13 [INFO] [stderr] | [INFO] [stderr] 185 | _ => {} [INFO] [stderr] | ^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unreachable_patterns)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `num` [INFO] [stderr] --> src/main.rs:104:27 [INFO] [stderr] | [INFO] [stderr] 104 | fn follow(filename: &str, num: usize) -> io::Result<()> { [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_num` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 8 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: function `readPage` should have a snake case name [INFO] [stderr] --> src/main.rs:67:10 [INFO] [stderr] | [INFO] [stderr] 67 | async fn readPage(url: &str) -> Result<(), Box> { [INFO] [stderr] | ^^^^^^^^ help: convert the identifier to snake case: `read_page` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(non_snake_case)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:75:5 [INFO] [stderr] | [INFO] [stderr] 75 | fetch_url(uri).await; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: 8 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 47.25s [INFO] running `"docker" "inspect" "c688d2f75dcf67afb36f49e15e72a226c5a7747339c4436c40e003e32ae1c01f"` [INFO] running `"docker" "rm" "-f" "c688d2f75dcf67afb36f49e15e72a226c5a7747339c4436c40e003e32ae1c01f"` [INFO] [stdout] c688d2f75dcf67afb36f49e15e72a226c5a7747339c4436c40e003e32ae1c01f