[INFO] fetching crate bcder 0.7.3...
[INFO] checking bcder-0.7.3 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate bcder 0.7.3 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate bcder 0.7.3 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 bcder 0.7.3
[INFO] finished tweaking crates.io crate bcder 0.7.3
[INFO] tweaked toml for crates.io crate bcder 0.7.3 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate bcder 0.7.3 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] b9f8c65406cf5c230f137a13afba46b8675fda49235f72d51b20ca2045499a41
[INFO] running `Command { std: "docker" "start" "-a" "b9f8c65406cf5c230f137a13afba46b8675fda49235f72d51b20ca2045499a41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b9f8c65406cf5c230f137a13afba46b8675fda49235f72d51b20ca2045499a41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9f8c65406cf5c230f137a13afba46b8675fda49235f72d51b20ca2045499a41", kill_on_drop: false }`
[INFO] [stdout] b9f8c65406cf5c230f137a13afba46b8675fda49235f72d51b20ca2045499a41
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] fcec9ce4e151ea776e40752dd7698e57c082f6a068b1381901a66432ae9e49a3
[INFO] running `Command { std: "docker" "start" "-a" "fcec9ce4e151ea776e40752dd7698e57c082f6a068b1381901a66432ae9e49a3", kill_on_drop: false }`
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]     Checking bcder v0.7.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Mode` is imported redundantly
[INFO] [stdout]    --> src/int.rs:710:9
[INFO] [stdout]     |
[INFO] [stdout] 709 |     use super::*;
[INFO] [stdout]     |         -------- the item `Mode` is already imported here
[INFO] [stdout] 710 |     use crate::Mode;
[INFO] [stdout]     |         ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Bytes` is imported redundantly
[INFO] [stdout]    --> src/string/restricted.rs:545:9
[INFO] [stdout]     |
[INFO] [stdout] 544 |     use super::*;
[INFO] [stdout]     |         -------- the item `Bytes` is already imported here
[INFO] [stdout] 545 |     use bytes::Bytes;
[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 1.16s
[INFO] running `Command { std: "docker" "inspect" "fcec9ce4e151ea776e40752dd7698e57c082f6a068b1381901a66432ae9e49a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fcec9ce4e151ea776e40752dd7698e57c082f6a068b1381901a66432ae9e49a3", kill_on_drop: false }`
[INFO] [stdout] fcec9ce4e151ea776e40752dd7698e57c082f6a068b1381901a66432ae9e49a3
[INFO] checking bcder-0.7.3 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate bcder 0.7.3 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate bcder 0.7.3 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 bcder 0.7.3
[INFO] finished tweaking crates.io crate bcder 0.7.3
[INFO] tweaked toml for crates.io crate bcder 0.7.3 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate crates.io crate bcder 0.7.3 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] ec12cb323ef85253102e6c2354852d0a6780546f262472344eb69775f3edca7d
[INFO] running `Command { std: "docker" "start" "-a" "ec12cb323ef85253102e6c2354852d0a6780546f262472344eb69775f3edca7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ec12cb323ef85253102e6c2354852d0a6780546f262472344eb69775f3edca7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec12cb323ef85253102e6c2354852d0a6780546f262472344eb69775f3edca7d", kill_on_drop: false }`
[INFO] [stdout] ec12cb323ef85253102e6c2354852d0a6780546f262472344eb69775f3edca7d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 686ee630d31df5ca7223c30c5d2d686a52c9b288890299fb369ca82673da10bd
[INFO] running `Command { std: "docker" "start" "-a" "686ee630d31df5ca7223c30c5d2d686a52c9b288890299fb369ca82673da10bd", kill_on_drop: false }`
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]     Checking bcder v0.7.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Mode` is imported redundantly
[INFO] [stdout]    --> src/int.rs:710:9
[INFO] [stdout]     |
[INFO] [stdout] 709 |     use super::*;
[INFO] [stdout]     |         -------- the item `Mode` is already imported here
[INFO] [stdout] 710 |     use crate::Mode;
[INFO] [stdout]     |         ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Bytes` is imported redundantly
[INFO] [stdout]    --> src/string/restricted.rs:545:9
[INFO] [stdout]     |
[INFO] [stdout] 544 |     use super::*;
[INFO] [stdout]     |         -------- the item `Bytes` is already imported here
[INFO] [stdout] 545 |     use bytes::Bytes;
[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 1.39s
[INFO] running `Command { std: "docker" "inspect" "686ee630d31df5ca7223c30c5d2d686a52c9b288890299fb369ca82673da10bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "686ee630d31df5ca7223c30c5d2d686a52c9b288890299fb369ca82673da10bd", kill_on_drop: false }`
[INFO] [stdout] 686ee630d31df5ca7223c30c5d2d686a52c9b288890299fb369ca82673da10bd