[INFO] fetching crate yangon 1.1.28...
[INFO] checking yangon-1.1.28 against master#8a703520e80d87d4423c01f9d4fbc9e5f6533a02 for pr-154205-1
[INFO] extracting crate yangon 1.1.28 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate yangon 1.1.28
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate yangon 1.1.28
[INFO] tweaked toml for crates.io crate yangon 1.1.28 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate yangon 1.1.28 on toolchain 8a703520e80d87d4423c01f9d4fbc9e5f6533a02
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8a703520e80d87d4423c01f9d4fbc9e5f6533a02" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate yangon 1.1.28 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" "+8a703520e80d87d4423c01f9d4fbc9e5f6533a02" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+8a703520e80d87d4423c01f9d4fbc9e5f6533a02" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 472347e7e89f78ddfec20fd744f27dd91125a68113af1bbb5ff14222b8bc0868
[INFO] running `Command { std: "docker" "start" "-a" "472347e7e89f78ddfec20fd744f27dd91125a68113af1bbb5ff14222b8bc0868", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "472347e7e89f78ddfec20fd744f27dd91125a68113af1bbb5ff14222b8bc0868", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "472347e7e89f78ddfec20fd744f27dd91125a68113af1bbb5ff14222b8bc0868", kill_on_drop: false }`
[INFO] [stdout] 472347e7e89f78ddfec20fd744f27dd91125a68113af1bbb5ff14222b8bc0868
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+8a703520e80d87d4423c01f9d4fbc9e5f6533a02" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 901d441e929475c49cf605d2cf675404002c3196543b4936e2ad58b1eb21bd36
[INFO] running `Command { std: "docker" "start" "-a" "901d441e929475c49cf605d2cf675404002c3196543b4936e2ad58b1eb21bd36", kill_on_drop: false }`
[INFO] [stderr]     Checking yangon v1.1.28 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `small_cap`
[INFO] [stdout]    --> tests/miri_tests.rs:140:13
[INFO] [stdout]     |
[INFO] [stdout] 140 |         let small_cap = y.capacity();
[INFO] [stdout]     |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_small_cap`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/miri_tests.rs:335:9
[INFO] [stdout]     |
[INFO] [stdout] 335 |     let mut y = Yangon::<1024>::from("ABCDEFGHIJ");
[INFO] [stdout]     |         ----^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> tests/miri_tests.rs:410:9
[INFO] [stdout]     |
[INFO] [stdout] 410 |     for i in 0..100 {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> tests/miri_tests.rs:467:10
[INFO] [stdout]     |
[INFO] [stdout] 467 |     for (i, op1) in ops.iter().enumerate() {
[INFO] [stdout]     |          ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]    --> tests/miri_tests.rs:468:14
[INFO] [stdout]     |
[INFO] [stdout] 468 |         for (j, op2) in ops.iter().enumerate() {
[INFO] [stdout]     |              ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> tests/miri_tests.rs:497:13
[INFO] [stdout]     |
[INFO] [stdout] 497 |         for i in 0..cap {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cycle`
[INFO] [stdout]    --> tests/miri_tests.rs:559:9
[INFO] [stdout]     |
[INFO] [stdout] 559 |     for cycle in 0..50 {
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_cycle`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]    --> tests/miri_tests.rs:708:9
[INFO] [stdout]     |
[INFO] [stdout] 708 |     let result = write!(&mut y, "{}", "This is a long string");
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y2`
[INFO] [stdout]    --> tests/miri_tests.rs:785:9
[INFO] [stdout]     |
[INFO] [stdout] 785 |     let y2 = Yangon::<2048>::with_capacity();
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_y2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "901d441e929475c49cf605d2cf675404002c3196543b4936e2ad58b1eb21bd36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "901d441e929475c49cf605d2cf675404002c3196543b4936e2ad58b1eb21bd36", kill_on_drop: false }`
[INFO] [stdout] 901d441e929475c49cf605d2cf675404002c3196543b4936e2ad58b1eb21bd36