[INFO] fetching crate byte 0.2.7...
[INFO] checking byte-0.2.7 against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] extracting crate byte 0.2.7 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate byte 0.2.7 on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate byte 0.2.7
[INFO] finished tweaking crates.io crate byte 0.2.7
[INFO] tweaked toml for crates.io crate byte 0.2.7 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 26 packages to latest compatible versions
[INFO] [stderr]       Adding aho-corasick v0.5.3 (latest: v1.1.3)
[INFO] [stderr]       Adding env_logger v0.3.5 (latest: v0.11.5)
[INFO] [stderr]       Adding log v0.3.9 (latest: v0.4.22)
[INFO] [stderr]       Adding memchr v0.1.11 (latest: v2.7.4)
[INFO] [stderr]       Adding quickcheck v0.3.2 (latest: v1.0.3)
[INFO] [stderr]       Adding rand v0.3.23 (latest: v0.8.5)
[INFO] [stderr]       Adding rand v0.4.6 (latest: v0.8.5)
[INFO] [stderr]       Adding rand_core v0.3.1 (latest: v0.6.4)
[INFO] [stderr]       Adding rand_core v0.4.2 (latest: v0.6.4)
[INFO] [stderr]       Adding rdrand v0.4.0 (latest: v0.8.3)
[INFO] [stderr]       Adding regex v0.1.80 (latest: v1.10.6)
[INFO] [stderr]       Adding regex-syntax v0.3.9 (latest: v0.8.4)
[INFO] [stderr]       Adding thread-id v2.0.0 (latest: v4.2.2)
[INFO] [stderr]       Adding thread_local v0.2.7 (latest: v1.1.8)
[INFO] [stderr]       Adding utf8-ranges v0.1.3 (latest: v1.0.5)
[INFO] [stderr]       Adding winapi v0.2.8 (latest: v0.3.9)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 37c5e48ea6d69534e79b133652b5bde947483043af2735b0bf074d476021600c
[INFO] running `Command { std: "docker" "start" "-a" "37c5e48ea6d69534e79b133652b5bde947483043af2735b0bf074d476021600c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "37c5e48ea6d69534e79b133652b5bde947483043af2735b0bf074d476021600c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37c5e48ea6d69534e79b133652b5bde947483043af2735b0bf074d476021600c", kill_on_drop: false }`
[INFO] [stdout] 37c5e48ea6d69534e79b133652b5bde947483043af2735b0bf074d476021600c
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e71fab299da6d83bfb73704da30ebbb6799cd2f9d3835d6ac13214f22d49cd64
[INFO] running `Command { std: "docker" "start" "-a" "e71fab299da6d83bfb73704da30ebbb6799cd2f9d3835d6ac13214f22d49cd64", kill_on_drop: false }`
[INFO] [stderr]     Checking byte v0.2.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking quickcheck v0.3.2
[INFO] [stdout] warning: unused variable: `bytes`
[INFO] [stdout]    --> tests/lib.rs:335:17
[INFO] [stdout]     |
[INFO] [stdout] 335 |     fn try_read(bytes: &'a [u8], _ctx: ()) -> Result<(Self, usize)> {
[INFO] [stdout]     |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes`
[INFO] [stdout]    --> tests/lib.rs:341:24
[INFO] [stdout]     |
[INFO] [stdout] 341 |     fn try_write(self, bytes: &mut [u8], _ctx: ()) -> Result<usize> {
[INFO] [stdout]     |                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.76s
[INFO] running `Command { std: "docker" "inspect" "e71fab299da6d83bfb73704da30ebbb6799cd2f9d3835d6ac13214f22d49cd64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e71fab299da6d83bfb73704da30ebbb6799cd2f9d3835d6ac13214f22d49cd64", kill_on_drop: false }`
[INFO] [stdout] e71fab299da6d83bfb73704da30ebbb6799cd2f9d3835d6ac13214f22d49cd64
[INFO] checking byte-0.2.7 against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1
[INFO] extracting crate byte 0.2.7 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate byte 0.2.7 on toolchain 6289438dbad80b1a0029c66dd3f6abf57c2c51be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate byte 0.2.7
[INFO] finished tweaking crates.io crate byte 0.2.7
[INFO] tweaked toml for crates.io crate byte 0.2.7 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 26 packages to latest compatible versions
[INFO] [stderr]       Adding aho-corasick v0.5.3 (latest: v1.1.3)
[INFO] [stderr]       Adding env_logger v0.3.5 (latest: v0.11.5)
[INFO] [stderr]       Adding log v0.3.9 (latest: v0.4.22)
[INFO] [stderr]       Adding memchr v0.1.11 (latest: v2.7.4)
[INFO] [stderr]       Adding quickcheck v0.3.2 (latest: v1.0.3)
[INFO] [stderr]       Adding rand v0.3.23 (latest: v0.8.5)
[INFO] [stderr]       Adding rand v0.4.6 (latest: v0.8.5)
[INFO] [stderr]       Adding rand_core v0.3.1 (latest: v0.6.4)
[INFO] [stderr]       Adding rand_core v0.4.2 (latest: v0.6.4)
[INFO] [stderr]       Adding rdrand v0.4.0 (latest: v0.8.3)
[INFO] [stderr]       Adding regex v0.1.80 (latest: v1.10.6)
[INFO] [stderr]       Adding regex-syntax v0.3.9 (latest: v0.8.4)
[INFO] [stderr]       Adding thread-id v2.0.0 (latest: v4.2.2)
[INFO] [stderr]       Adding thread_local v0.2.7 (latest: v1.1.8)
[INFO] [stderr]       Adding utf8-ranges v0.1.3 (latest: v1.0.5)
[INFO] [stderr]       Adding winapi v0.2.8 (latest: v0.3.9)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d64714634a2b3cf6f51d045df22a85f33c002f6cd83a1ec276be6f63f8a1fda3
[INFO] running `Command { std: "docker" "start" "-a" "d64714634a2b3cf6f51d045df22a85f33c002f6cd83a1ec276be6f63f8a1fda3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d64714634a2b3cf6f51d045df22a85f33c002f6cd83a1ec276be6f63f8a1fda3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d64714634a2b3cf6f51d045df22a85f33c002f6cd83a1ec276be6f63f8a1fda3", kill_on_drop: false }`
[INFO] [stdout] d64714634a2b3cf6f51d045df22a85f33c002f6cd83a1ec276be6f63f8a1fda3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 43abd579d1bfb9e965921735d8442ac8a235653268e861aaab69d9b3dc0e48a6
[INFO] running `Command { std: "docker" "start" "-a" "43abd579d1bfb9e965921735d8442ac8a235653268e861aaab69d9b3dc0e48a6", kill_on_drop: false }`
[INFO] [stderr]     Checking byte v0.2.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking quickcheck v0.3.2
[INFO] [stdout] warning: unused variable: `bytes`
[INFO] [stdout]    --> tests/lib.rs:335:17
[INFO] [stdout]     |
[INFO] [stdout] 335 |     fn try_read(bytes: &'a [u8], _ctx: ()) -> Result<(Self, usize)> {
[INFO] [stdout]     |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes`
[INFO] [stdout]    --> tests/lib.rs:341:24
[INFO] [stdout]     |
[INFO] [stdout] 341 |     fn try_write(self, bytes: &mut [u8], _ctx: ()) -> Result<usize> {
[INFO] [stdout]     |                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `Command { std: "docker" "inspect" "43abd579d1bfb9e965921735d8442ac8a235653268e861aaab69d9b3dc0e48a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43abd579d1bfb9e965921735d8442ac8a235653268e861aaab69d9b3dc0e48a6", kill_on_drop: false }`
[INFO] [stdout] 43abd579d1bfb9e965921735d8442ac8a235653268e861aaab69d9b3dc0e48a6