[INFO] fetching crate zeppelin_core 0.1.1...
[INFO] checking zeppelin_core-0.1.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate zeppelin_core 0.1.1 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate zeppelin_core 0.1.1 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 zeppelin_core 0.1.1
[INFO] finished tweaking crates.io crate zeppelin_core 0.1.1
[INFO] tweaked toml for crates.io crate zeppelin_core 0.1.1 written to /workspace/builds/worker-6-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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 48 packages
[INFO] [stderr]       Adding encode_unicode v0.3.6 (latest: v1.0.0)
[INFO] [stderr]       Adding generic-array v0.14.7 (latest: v1.0.0)
[INFO] [stderr]       Adding hex-literal v0.3.4 (latest: v0.4.1)
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] f7fb1dde0c2cc113e6edb221963d4b0435c206102b9dcf053b19fb1073bde3d9
[INFO] running `Command { std: "docker" "start" "-a" "f7fb1dde0c2cc113e6edb221963d4b0435c206102b9dcf053b19fb1073bde3d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f7fb1dde0c2cc113e6edb221963d4b0435c206102b9dcf053b19fb1073bde3d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7fb1dde0c2cc113e6edb221963d4b0435c206102b9dcf053b19fb1073bde3d9", kill_on_drop: false }`
[INFO] [stdout] f7fb1dde0c2cc113e6edb221963d4b0435c206102b9dcf053b19fb1073bde3d9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 2fc6a1274af110d37cd097f285ba7a8e3364641f6903f775dec18cba5cbb8ad8
[INFO] running `Command { std: "docker" "start" "-a" "2fc6a1274af110d37cd097f285ba7a8e3364641f6903f775dec18cba5cbb8ad8", kill_on_drop: false }`
[INFO] [stderr]    Compiling hex-literal v0.3.4
[INFO] [stderr]     Checking console v0.15.8
[INFO] [stderr]     Checking flate2 v1.0.28
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking sha3 v0.10.8
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking zip v0.6.6
[INFO] [stderr]     Checking serde_json v1.0.115
[INFO] [stderr]     Checking zeppelin_core v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `CryptSettings` is imported redundantly
[INFO] [stdout]    --> src/cipher.rs:244:9
[INFO] [stdout]     |
[INFO] [stdout] 243 |     use super::*;
[INFO] [stdout]     |         -------- the item `CryptSettings` is already imported here
[INFO] [stdout] 244 |     use crate::cipher::CryptSettings;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Progress` is imported redundantly
[INFO] [stdout]    --> src/cipher.rs:245:9
[INFO] [stdout]     |
[INFO] [stdout] 243 |     use super::*;
[INFO] [stdout]     |         -------- the item `Progress` is already imported here
[INFO] [stdout] 244 |     use crate::cipher::CryptSettings;
[INFO] [stdout] 245 |     use crate::progress::Progress;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `io` is imported redundantly
[INFO] [stdout]    --> src/container.rs:139:9
[INFO] [stdout]     |
[INFO] [stdout] 139 |     use std::io;
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 143 |     use super::*;
[INFO] [stdout]     |         -------- the item `io` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.01s
[INFO] running `Command { std: "docker" "inspect" "2fc6a1274af110d37cd097f285ba7a8e3364641f6903f775dec18cba5cbb8ad8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fc6a1274af110d37cd097f285ba7a8e3364641f6903f775dec18cba5cbb8ad8", kill_on_drop: false }`
[INFO] [stdout] 2fc6a1274af110d37cd097f285ba7a8e3364641f6903f775dec18cba5cbb8ad8
[INFO] checking zeppelin_core-0.1.1 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate zeppelin_core 0.1.1 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate zeppelin_core 0.1.1 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 zeppelin_core 0.1.1
[INFO] finished tweaking crates.io crate zeppelin_core 0.1.1
[INFO] tweaked toml for crates.io crate zeppelin_core 0.1.1 written to /workspace/builds/worker-6-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]     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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 1d23b07b346e700141927035edc329fd2f1e03165742ddf3f538325fe9b504d7
[INFO] running `Command { std: "docker" "start" "-a" "1d23b07b346e700141927035edc329fd2f1e03165742ddf3f538325fe9b504d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1d23b07b346e700141927035edc329fd2f1e03165742ddf3f538325fe9b504d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d23b07b346e700141927035edc329fd2f1e03165742ddf3f538325fe9b504d7", kill_on_drop: false }`
[INFO] [stdout] 1d23b07b346e700141927035edc329fd2f1e03165742ddf3f538325fe9b504d7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 08bb0f52f105d392a5b7ad3a5273e286569028e49b19b3c85afe674f191cf5c7
[INFO] running `Command { std: "docker" "start" "-a" "08bb0f52f105d392a5b7ad3a5273e286569028e49b19b3c85afe674f191cf5c7", kill_on_drop: false }`
[INFO] [stderr]    Compiling hex-literal v0.3.4
[INFO] [stderr]     Checking flate2 v1.0.28
[INFO] [stderr]     Checking console v0.15.8
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking sha3 v0.10.8
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking zip v0.6.6
[INFO] [stderr]     Checking serde_json v1.0.115
[INFO] [stderr]     Checking zeppelin_core v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `CryptSettings` is imported redundantly
[INFO] [stdout]    --> src/cipher.rs:244:9
[INFO] [stdout]     |
[INFO] [stdout] 243 |     use super::*;
[INFO] [stdout]     |         -------- the item `CryptSettings` is already imported here
[INFO] [stdout] 244 |     use crate::cipher::CryptSettings;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Progress` is imported redundantly
[INFO] [stdout]    --> src/cipher.rs:245:9
[INFO] [stdout]     |
[INFO] [stdout] 243 |     use super::*;
[INFO] [stdout]     |         -------- the item `Progress` is already imported here
[INFO] [stdout] 244 |     use crate::cipher::CryptSettings;
[INFO] [stdout] 245 |     use crate::progress::Progress;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `io` is imported redundantly
[INFO] [stdout]    --> src/container.rs:139:9
[INFO] [stdout]     |
[INFO] [stdout] 139 |     use std::io;
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 143 |     use super::*;
[INFO] [stdout]     |         -------- the item `io` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.01s
[INFO] running `Command { std: "docker" "inspect" "08bb0f52f105d392a5b7ad3a5273e286569028e49b19b3c85afe674f191cf5c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08bb0f52f105d392a5b7ad3a5273e286569028e49b19b3c85afe674f191cf5c7", kill_on_drop: false }`
[INFO] [stdout] 08bb0f52f105d392a5b7ad3a5273e286569028e49b19b3c85afe674f191cf5c7