[INFO] cloning repository https://github.com/garyemerson/kindle_rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/garyemerson/kindle_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgaryemerson%2Fkindle_rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgaryemerson%2Fkindle_rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 82aa658b8ec3442181ccb917383d809c92ea9f88 [INFO] checking garyemerson/kindle_rust against try#b1f2594eac607c1f051534800237eeedb5590a49 for pr-139493-3 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgaryemerson%2Fkindle_rust" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'... [INFO] [stderr] done. [INFO] removed /workspace/builds/worker-5-tc2/source/.cargo/config [INFO] started tweaking git repo https://github.com/garyemerson/kindle_rust [INFO] finished tweaking git repo https://github.com/garyemerson/kindle_rust [INFO] tweaked toml for git repo https://github.com/garyemerson/kindle_rust written to /workspace/builds/worker-5-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/garyemerson/kindle_rust on toolchain b1f2594eac607c1f051534800237eeedb5590a49 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/garyemerson/kindle_rust 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" "+b1f2594eac607c1f051534800237eeedb5590a49" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] c0259d538bc5747598661b9ffce2d87fe39e8ad8abba709eb7becacdf06b2e82 [INFO] running `Command { std: "docker" "start" "-a" "c0259d538bc5747598661b9ffce2d87fe39e8ad8abba709eb7becacdf06b2e82", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c0259d538bc5747598661b9ffce2d87fe39e8ad8abba709eb7becacdf06b2e82", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c0259d538bc5747598661b9ffce2d87fe39e8ad8abba709eb7becacdf06b2e82", kill_on_drop: false }` [INFO] [stdout] c0259d538bc5747598661b9ffce2d87fe39e8ad8abba709eb7becacdf06b2e82 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] e457e0cbf2ac7b13fdcfe1c17534d5fc499ab6a5d6f1f45b6648a8e45fc744af [INFO] running `Command { std: "docker" "start" "-a" "e457e0cbf2ac7b13fdcfe1c17534d5fc499ab6a5d6f1f45b6648a8e45fc744af", kill_on_drop: false }` [INFO] [stderr] Checking cfg-if v0.1.5 [INFO] [stderr] Compiling num-traits v0.2.5 [INFO] [stderr] Compiling num-integer v0.1.39 [INFO] [stderr] Checking nodrop v0.1.12 [INFO] [stderr] Checking memoffset v0.2.1 [INFO] [stderr] Compiling proc-macro2 v0.4.13 [INFO] [stderr] Checking scopeguard v0.3.3 [INFO] [stderr] Compiling rayon-core v1.4.1 [INFO] [stderr] Compiling getrandom v0.1.12 [INFO] [stderr] Checking arrayvec v0.4.7 [INFO] [stderr] Checking num_cpus v1.8.0 [INFO] [stderr] Checking crossbeam-utils v0.2.2 [INFO] [stderr] Compiling num-iter v0.1.37 [INFO] [stderr] Compiling rayon v1.0.2 [INFO] [stderr] Checking adler32 v1.0.3 [INFO] [stderr] Checking crossbeam-epoch v0.3.1 [INFO] [stderr] Checking either v1.5.0 [INFO] [stderr] Checking ppv-lite86 v0.2.5 [INFO] [stderr] Checking deflate v0.7.18 [INFO] [stderr] Compiling quote v0.6.6 [INFO] [stderr] Checking inflate v0.4.3 [INFO] [stderr] Checking crossbeam-deque v0.2.0 [INFO] [stderr] Compiling syn v0.14.9 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking bitflags v1.0.4 [INFO] [stderr] Checking gif v0.10.0 [INFO] [stderr] Checking c2-chacha v0.2.2 [INFO] [stderr] Checking time v0.1.42 [INFO] [stderr] Checking memmap v0.6.2 [INFO] [stderr] Checking rand_chacha v0.2.1 [INFO] [stderr] Checking rand v0.7.0 [INFO] [stderr] Checking num-rational v0.1.42 [INFO] [stderr] Checking chrono v0.4.6 [INFO] [stderr] Checking png v0.12.0 [INFO] [stderr] Checking jpeg-decoder v0.1.15 [INFO] [stderr] Compiling num-derive v0.2.2 [INFO] [stderr] Checking image v0.19.0 [INFO] [stderr] Checking kindle_rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `stdout` [INFO] [stdout] --> src/main.rs:5:28 [INFO] [stdout] | [INFO] [stdout] 5 | use std::io::{Read, stdin, stdout, Write}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Rng` and `thread_rng` [INFO] [stdout] --> src/main.rs:18:12 [INFO] [stdout] | [INFO] [stdout] 18 | use rand::{thread_rng, Rng}; [INFO] [stdout] | ^^^^^^^^^^ ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/main.rs:157:16 [INFO] [stdout] | [INFO] [stdout] 157 | inner: Box>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default [INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 157 | inner: Box>, [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable statement [INFO] [stdout] --> src/main.rs:326:5 [INFO] [stdout] | [INFO] [stdout] 324 | return; [INFO] [stdout] | ------ any code following this expression is unreachable [INFO] [stdout] 325 | [INFO] [stdout] 326 | env::set_var("RUST_BACKTRACE", "1"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Write` [INFO] [stdout] --> src/main.rs:5:36 [INFO] [stdout] | [INFO] [stdout] 5 | use std::io::{Read, stdin, stdout, Write}; [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `stdout` [INFO] [stdout] --> src/main.rs:5:28 [INFO] [stdout] | [INFO] [stdout] 5 | use std::io::{Read, stdin, stdout, Write}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Rng` and `thread_rng` [INFO] [stdout] --> src/main.rs:18:12 [INFO] [stdout] | [INFO] [stdout] 18 | use rand::{thread_rng, Rng}; [INFO] [stdout] | ^^^^^^^^^^ ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `waveform_mode` [INFO] [stdout] --> src/main.rs:77:11 [INFO] [stdout] | [INFO] [stdout] 77 | fn foobar(waveform_mode: u32, update_mode: u32, update_marker: u32, ) -> Result<(), String> { [INFO] [stdout] | ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_waveform_mode` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/main.rs:157:16 [INFO] [stdout] | [INFO] [stdout] 157 | inner: Box>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default [INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 157 | inner: Box>, [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `update_mode` [INFO] [stdout] --> src/main.rs:77:31 [INFO] [stdout] | [INFO] [stdout] 77 | fn foobar(waveform_mode: u32, update_mode: u32, update_marker: u32, ) -> Result<(), String> { [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_update_mode` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `update_marker` [INFO] [stdout] --> src/main.rs:77:49 [INFO] [stdout] | [INFO] [stdout] 77 | fn foobar(waveform_mode: u32, update_mode: u32, update_marker: u32, ) -> Result<(), String> { [INFO] [stdout] | ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_update_marker` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `height` [INFO] [stdout] --> src/main.rs:290:5 [INFO] [stdout] | [INFO] [stdout] 290 | height: u32, [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_height` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `IterChunks` is never constructed [INFO] [stdout] --> src/main.rs:156:8 [INFO] [stdout] | [INFO] [stdout] 156 | struct IterChunks { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `foo_draw` is never used [INFO] [stdout] --> src/main.rs:285:4 [INFO] [stdout] | [INFO] [stdout] 285 | fn foo_draw( [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable statement [INFO] [stdout] --> src/main.rs:326:5 [INFO] [stdout] | [INFO] [stdout] 324 | return; [INFO] [stdout] | ------ any code following this expression is unreachable [INFO] [stdout] 325 | [INFO] [stdout] 326 | env::set_var("RUST_BACKTRACE", "1"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Write` [INFO] [stdout] --> src/main.rs:5:36 [INFO] [stdout] | [INFO] [stdout] 5 | use std::io::{Read, stdin, stdout, Write}; [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `waveform_mode` [INFO] [stdout] --> src/main.rs:77:11 [INFO] [stdout] | [INFO] [stdout] 77 | fn foobar(waveform_mode: u32, update_mode: u32, update_marker: u32, ) -> Result<(), String> { [INFO] [stdout] | ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_waveform_mode` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `update_mode` [INFO] [stdout] --> src/main.rs:77:31 [INFO] [stdout] | [INFO] [stdout] 77 | fn foobar(waveform_mode: u32, update_mode: u32, update_marker: u32, ) -> Result<(), String> { [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_update_mode` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `update_marker` [INFO] [stdout] --> src/main.rs:77:49 [INFO] [stdout] | [INFO] [stdout] 77 | fn foobar(waveform_mode: u32, update_mode: u32, update_marker: u32, ) -> Result<(), String> { [INFO] [stdout] | ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_update_marker` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `height` [INFO] [stdout] --> src/main.rs:290:5 [INFO] [stdout] | [INFO] [stdout] 290 | height: u32, [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_height` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `IterChunks` is never constructed [INFO] [stdout] --> src/main.rs:156:8 [INFO] [stdout] | [INFO] [stdout] 156 | struct IterChunks { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `foo_draw` is never used [INFO] [stdout] --> src/main.rs:285:4 [INFO] [stdout] | [INFO] [stdout] 285 | fn foo_draw( [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.88s [INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: syn v0.14.9 [INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 13` [INFO] running `Command { std: "docker" "inspect" "e457e0cbf2ac7b13fdcfe1c17534d5fc499ab6a5d6f1f45b6648a8e45fc744af", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e457e0cbf2ac7b13fdcfe1c17534d5fc499ab6a5d6f1f45b6648a8e45fc744af", kill_on_drop: false }` [INFO] [stdout] e457e0cbf2ac7b13fdcfe1c17534d5fc499ab6a5d6f1f45b6648a8e45fc744af