[INFO] fetching crate lector 0.1.0...
[INFO] checking lector-0.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate lector 0.1.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate lector 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 lector 0.1.0
[INFO] finished tweaking crates.io crate lector 0.1.0
[INFO] tweaked toml for crates.io crate lector 0.1.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate lector 0.1.0 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded termsize v0.1.6
[INFO] [stderr]   Downloaded ptyprocess v0.4.1
[INFO] [stderr]   Downloaded emojis v0.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] e984dfc4733c8b641d117b04c416039bbfeeb658574cfb9c03a93a85e26da5b6
[INFO] running `Command { std: "docker" "start" "-a" "e984dfc4733c8b641d117b04c416039bbfeeb658574cfb9c03a93a85e26da5b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e984dfc4733c8b641d117b04c416039bbfeeb658574cfb9c03a93a85e26da5b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e984dfc4733c8b641d117b04c416039bbfeeb658574cfb9c03a93a85e26da5b6", kill_on_drop: false }`
[INFO] [stdout] e984dfc4733c8b641d117b04c416039bbfeeb658574cfb9c03a93a85e26da5b6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] a3c68241075ab8a58851b32d367e08b0710aeb0b9c0f1747d83f0e691a66f599
[INFO] running `Command { std: "docker" "start" "-a" "a3c68241075ab8a58851b32d367e08b0710aeb0b9c0f1747d83f0e691a66f599", kill_on_drop: false }`
[INFO] [stderr]    Compiling siphasher v0.3.10
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking log v0.4.19
[INFO] [stderr]    Compiling signal-hook v0.3.17
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]    Compiling anyhow v1.0.72
[INFO] [stderr]     Checking utf8parse v0.2.1
[INFO] [stderr]     Checking arrayvec v0.7.4
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]     Checking unicode-segmentation v1.10.1
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]    Compiling syn v2.0.27
[INFO] [stderr]    Compiling vte_generate_state_changes v0.1.1
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking mio v0.8.8
[INFO] [stderr]     Checking ptyprocess v0.4.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]     Checking termsize v0.1.6
[INFO] [stderr]     Checking phf_shared v0.11.2
[INFO] [stderr]     Checking vte v0.11.1
[INFO] [stderr]     Checking signal-hook-mio v0.2.3
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]    Compiling phf_generator v0.11.2
[INFO] [stderr]     Checking similar v2.2.1
[INFO] [stderr]     Checking vt100 v0.15.2
[INFO] [stderr]    Compiling phf_macros v0.11.2
[INFO] [stderr]     Checking phf v0.11.2
[INFO] [stderr]     Checking emojis v0.6.0
[INFO] [stderr]     Checking lector v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `get_rate` is never used
[INFO] [stdout]   --> src/speech/mod.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Speech {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub fn get_rate(&self) -> f32 {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_rate` is never used
[INFO] [stdout]  --> src/speech/drivers/mod.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub trait Driver {
[INFO] [stdout]   |           ------ method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 8 |     fn get_rate(&self) -> f32;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_rate` is never used
[INFO] [stdout]   --> src/speech/mod.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Speech {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub fn get_rate(&self) -> f32 {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_rate` is never used
[INFO] [stdout]  --> src/speech/drivers/mod.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub trait Driver {
[INFO] [stdout]   |           ------ method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 8 |     fn get_rate(&self) -> f32;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.22s
[INFO] running `Command { std: "docker" "inspect" "a3c68241075ab8a58851b32d367e08b0710aeb0b9c0f1747d83f0e691a66f599", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3c68241075ab8a58851b32d367e08b0710aeb0b9c0f1747d83f0e691a66f599", kill_on_drop: false }`
[INFO] [stdout] a3c68241075ab8a58851b32d367e08b0710aeb0b9c0f1747d83f0e691a66f599
[INFO] checking lector-0.1.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate lector 0.1.0 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate lector 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 lector 0.1.0
[INFO] finished tweaking crates.io crate lector 0.1.0
[INFO] tweaked toml for crates.io crate lector 0.1.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate crates.io crate lector 0.1.0 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] f7f4b8496189cc209f0adaf5fe2b878e8c5bddf3962911b4cf7e4879fe7f5fd6
[INFO] running `Command { std: "docker" "start" "-a" "f7f4b8496189cc209f0adaf5fe2b878e8c5bddf3962911b4cf7e4879fe7f5fd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f7f4b8496189cc209f0adaf5fe2b878e8c5bddf3962911b4cf7e4879fe7f5fd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7f4b8496189cc209f0adaf5fe2b878e8c5bddf3962911b4cf7e4879fe7f5fd6", kill_on_drop: false }`
[INFO] [stdout] f7f4b8496189cc209f0adaf5fe2b878e8c5bddf3962911b4cf7e4879fe7f5fd6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 4f9ed6fdce7654f6c3cce1ff12aded040979e709037f8e30d8796a39b45dad1a
[INFO] running `Command { std: "docker" "start" "-a" "4f9ed6fdce7654f6c3cce1ff12aded040979e709037f8e30d8796a39b45dad1a", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling siphasher v0.3.10
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking log v0.4.19
[INFO] [stderr]    Compiling signal-hook v0.3.17
[INFO] [stderr]     Checking utf8parse v0.2.1
[INFO] [stderr]    Compiling anyhow v1.0.72
[INFO] [stderr]     Checking arrayvec v0.7.4
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]     Checking unicode-segmentation v1.10.1
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]    Compiling syn v2.0.27
[INFO] [stderr]    Compiling vte_generate_state_changes v0.1.1
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking ptyprocess v0.4.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]     Checking mio v0.8.8
[INFO] [stderr]     Checking termsize v0.1.6
[INFO] [stderr]     Checking phf_shared v0.11.2
[INFO] [stderr]     Checking vte v0.11.1
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking signal-hook-mio v0.2.3
[INFO] [stderr]     Checking similar v2.2.1
[INFO] [stderr]    Compiling phf_generator v0.11.2
[INFO] [stderr]     Checking vt100 v0.15.2
[INFO] [stderr]    Compiling phf_macros v0.11.2
[INFO] [stderr]     Checking phf v0.11.2
[INFO] [stderr]     Checking emojis v0.6.0
[INFO] [stderr]     Checking lector v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `get_rate` is never used
[INFO] [stdout]   --> src/speech/mod.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Speech {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub fn get_rate(&self) -> f32 {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_rate` is never used
[INFO] [stdout]  --> src/speech/drivers/mod.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub trait Driver {
[INFO] [stdout]   |           ------ method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 8 |     fn get_rate(&self) -> f32;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_rate` is never used
[INFO] [stdout]   --> src/speech/mod.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Speech {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub fn get_rate(&self) -> f32 {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_rate` is never used
[INFO] [stdout]  --> src/speech/drivers/mod.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub trait Driver {
[INFO] [stdout]   |           ------ method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 8 |     fn get_rate(&self) -> f32;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.93s
[INFO] running `Command { std: "docker" "inspect" "4f9ed6fdce7654f6c3cce1ff12aded040979e709037f8e30d8796a39b45dad1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f9ed6fdce7654f6c3cce1ff12aded040979e709037f8e30d8796a39b45dad1a", kill_on_drop: false }`
[INFO] [stdout] 4f9ed6fdce7654f6c3cce1ff12aded040979e709037f8e30d8796a39b45dad1a