[INFO] fetching crate string_iter 0.1.0...
[INFO] checking string_iter-0.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate string_iter 0.1.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate string_iter 0.1.0 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate string_iter 0.1.0
[INFO] finished tweaking crates.io crate string_iter 0.1.0
[INFO] tweaked toml for crates.io crate string_iter 0.1.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 78 packages
[INFO] [stderr]       Adding anes v0.1.6 (latest: v0.2.0)
[INFO] [stderr]       Adding itertools v0.10.5 (latest: v0.12.1)
[INFO] [stderr]       Adding itertools v0.11.0 (latest: v0.12.1)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2db504c1ecee86ff93e17aa736b28c321bcb81258be70213bad24caa6d3ba770
[INFO] running `Command { std: "docker" "start" "-a" "2db504c1ecee86ff93e17aa736b28c321bcb81258be70213bad24caa6d3ba770", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2db504c1ecee86ff93e17aa736b28c321bcb81258be70213bad24caa6d3ba770", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2db504c1ecee86ff93e17aa736b28c321bcb81258be70213bad24caa6d3ba770", kill_on_drop: false }`
[INFO] [stdout] 2db504c1ecee86ff93e17aa736b28c321bcb81258be70213bad24caa6d3ba770
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b77e00ab9add6a98a3263730c1f48c420b000e8f48751e6e2c76c4752825b7f5
[INFO] running `Command { std: "docker" "start" "-a" "b77e00ab9add6a98a3263730c1f48c420b000e8f48751e6e2c76c4752825b7f5", kill_on_drop: false }`
[INFO] [stderr]     Checking string_iter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking criterion v0.5.1
[INFO] [stdout] warning: methods `slice_front_ptr` and `slice_back_ptr` are never used
[INFO] [stdout]    --> src/lib.rs:332:15
[INFO] [stdout]     |
[INFO] [stdout] 304 | impl<'t> StringIter<'t> {
[INFO] [stdout]     | ----------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 332 |     unsafe fn slice_front_ptr(&self, ptr: *const u8) -> &'t str{
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 337 |     unsafe fn slice_back_ptr(&self, ptr: *const u8) -> &'t str{
[INFO] [stdout]     |               ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stdout] warning: methods `slice_front_ptr` and `slice_back_ptr` are never used
[INFO] [stdout]    --> src/lib.rs:332:15
[INFO] [stdout]     |
[INFO] [stdout] 304 | impl<'t> StringIter<'t> {
[INFO] [stdout]     | ----------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 332 |     unsafe fn slice_front_ptr(&self, ptr: *const u8) -> &'t str{
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 337 |     unsafe fn slice_back_ptr(&self, ptr: *const u8) -> &'t str{
[INFO] [stdout]     |               ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.11s
[INFO] running `Command { std: "docker" "inspect" "b77e00ab9add6a98a3263730c1f48c420b000e8f48751e6e2c76c4752825b7f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b77e00ab9add6a98a3263730c1f48c420b000e8f48751e6e2c76c4752825b7f5", kill_on_drop: false }`
[INFO] [stdout] b77e00ab9add6a98a3263730c1f48c420b000e8f48751e6e2c76c4752825b7f5
[INFO] checking string_iter-0.1.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate string_iter 0.1.0 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate string_iter 0.1.0 on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate string_iter 0.1.0
[INFO] finished tweaking crates.io crate string_iter 0.1.0
[INFO] tweaked toml for crates.io crate string_iter 0.1.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 82ec063797474933f87760ed13f7dde8c4aadc66f8c96f79b047cd00660f87e2
[INFO] running `Command { std: "docker" "start" "-a" "82ec063797474933f87760ed13f7dde8c4aadc66f8c96f79b047cd00660f87e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "82ec063797474933f87760ed13f7dde8c4aadc66f8c96f79b047cd00660f87e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82ec063797474933f87760ed13f7dde8c4aadc66f8c96f79b047cd00660f87e2", kill_on_drop: false }`
[INFO] [stdout] 82ec063797474933f87760ed13f7dde8c4aadc66f8c96f79b047cd00660f87e2
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5f80dec15b01b1c04ceefcdb42ba355b9a6c2b39c44afdf2358f64a80a546ec7
[INFO] running `Command { std: "docker" "start" "-a" "5f80dec15b01b1c04ceefcdb42ba355b9a6c2b39c44afdf2358f64a80a546ec7", kill_on_drop: false }`
[INFO] [stderr]     Checking string_iter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking criterion v0.5.1
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stdout] warning: methods `slice_front_ptr` and `slice_back_ptr` are never used
[INFO] [stdout]    --> src/lib.rs:332:15
[INFO] [stdout]     |
[INFO] [stdout] 304 | impl<'t> StringIter<'t> {
[INFO] [stdout]     | ----------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 332 |     unsafe fn slice_front_ptr(&self, ptr: *const u8) -> &'t str{
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 337 |     unsafe fn slice_back_ptr(&self, ptr: *const u8) -> &'t str{
[INFO] [stdout]     |               ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stdout] warning: methods `slice_front_ptr` and `slice_back_ptr` are never used
[INFO] [stdout]    --> src/lib.rs:332:15
[INFO] [stdout]     |
[INFO] [stdout] 304 | impl<'t> StringIter<'t> {
[INFO] [stdout]     | ----------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 332 |     unsafe fn slice_front_ptr(&self, ptr: *const u8) -> &'t str{
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 337 |     unsafe fn slice_back_ptr(&self, ptr: *const u8) -> &'t str{
[INFO] [stdout]     |               ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.73s
[INFO] running `Command { std: "docker" "inspect" "5f80dec15b01b1c04ceefcdb42ba355b9a6c2b39c44afdf2358f64a80a546ec7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f80dec15b01b1c04ceefcdb42ba355b9a6c2b39c44afdf2358f64a80a546ec7", kill_on_drop: false }`
[INFO] [stdout] 5f80dec15b01b1c04ceefcdb42ba355b9a6c2b39c44afdf2358f64a80a546ec7