[INFO] fetching crate rftp 0.1.7...
[INFO] checking rftp-0.1.7 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate rftp 0.1.7 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate rftp 0.1.7 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 rftp 0.1.7
[INFO] finished tweaking crates.io crate rftp 0.1.7
[INFO] tweaked toml for crates.io crate rftp 0.1.7 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate rftp 0.1.7 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]     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]  Downloading crates ...
[INFO] [stderr]   Downloaded tui v0.19.0
[INFO] [stderr]   Downloaded rpassword v4.0.5
[INFO] [stderr]   Downloaded ssh2 v0.9.3
[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] 4aeeb492e10c31b4ad1f373d3881d69f7ff7cd674a1f80d5794a4a1e14995e12
[INFO] running `Command { std: "docker" "start" "-a" "4aeeb492e10c31b4ad1f373d3881d69f7ff7cd674a1f80d5794a4a1e14995e12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4aeeb492e10c31b4ad1f373d3881d69f7ff7cd674a1f80d5794a4a1e14995e12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4aeeb492e10c31b4ad1f373d3881d69f7ff7cd674a1f80d5794a4a1e14995e12", kill_on_drop: false }`
[INFO] [stdout] 4aeeb492e10c31b4ad1f373d3881d69f7ff7cd674a1f80d5794a4a1e14995e12
[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] f2e10f4e61fdacc5e6b19ddaf79d80ccacf87d732f4f7bbee93c38f2e44c1bc9
[INFO] running `Command { std: "docker" "start" "-a" "f2e10f4e61fdacc5e6b19ddaf79d80ccacf87d732f4f7bbee93c38f2e44c1bc9", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.132
[INFO] [stderr]    Compiling pkg-config v0.3.25
[INFO] [stderr]     Checking smallvec v1.9.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling unicode-ident v1.0.3
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]    Compiling signal-hook v0.3.14
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling lock_api v0.4.8
[INFO] [stderr]    Compiling crossbeam-utils v0.8.11
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking once_cell v1.13.1
[INFO] [stderr]     Checking cassowary v0.3.0
[INFO] [stderr]     Checking unicode-segmentation v1.9.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking base64 v0.12.3
[INFO] [stderr]    Compiling libz-sys v1.1.8
[INFO] [stderr]    Compiling openssl-sys v0.9.75
[INFO] [stderr]    Compiling libssh2-sys v0.2.23
[INFO] [stderr]     Checking crossbeam-channel v0.5.6
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking mio v0.8.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking dirs-sys v0.3.7
[INFO] [stderr]     Checking rpassword v4.0.5
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking signal-hook-mio v0.2.3
[INFO] [stderr]     Checking crossterm v0.25.0
[INFO] [stderr]     Checking tui v0.19.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.32
[INFO] [stderr]     Checking thiserror v1.0.32
[INFO] [stderr]     Checking ssh2 v0.9.3
[INFO] [stderr]     Checking rftp v0.1.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Iterator` is imported redundantly
[INFO] [stdout]   --> src/rftp.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::iter::Iterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Iterator` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Iterator` is imported redundantly
[INFO] [stdout]   --> src/rftp.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::iter::Iterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Iterator` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.91s
[INFO] running `Command { std: "docker" "inspect" "f2e10f4e61fdacc5e6b19ddaf79d80ccacf87d732f4f7bbee93c38f2e44c1bc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2e10f4e61fdacc5e6b19ddaf79d80ccacf87d732f4f7bbee93c38f2e44c1bc9", kill_on_drop: false }`
[INFO] [stdout] f2e10f4e61fdacc5e6b19ddaf79d80ccacf87d732f4f7bbee93c38f2e44c1bc9
[INFO] checking rftp-0.1.7 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate rftp 0.1.7 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate rftp 0.1.7 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 rftp 0.1.7
[INFO] finished tweaking crates.io crate rftp 0.1.7
[INFO] tweaked toml for crates.io crate rftp 0.1.7 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate crates.io crate rftp 0.1.7 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-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] 570612bcac8893e6aa4afcf1a29de1771199d5bc0ff71f6eb78a6065983bd4fa
[INFO] running `Command { std: "docker" "start" "-a" "570612bcac8893e6aa4afcf1a29de1771199d5bc0ff71f6eb78a6065983bd4fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "570612bcac8893e6aa4afcf1a29de1771199d5bc0ff71f6eb78a6065983bd4fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "570612bcac8893e6aa4afcf1a29de1771199d5bc0ff71f6eb78a6065983bd4fa", kill_on_drop: false }`
[INFO] [stdout] 570612bcac8893e6aa4afcf1a29de1771199d5bc0ff71f6eb78a6065983bd4fa
[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] 6488436b48b83c33251bbce4611c36ba9736930a7261940d05661a8a33bfb1c2
[INFO] running `Command { std: "docker" "start" "-a" "6488436b48b83c33251bbce4611c36ba9736930a7261940d05661a8a33bfb1c2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.132
[INFO] [stderr]    Compiling pkg-config v0.3.25
[INFO] [stderr]     Checking smallvec v1.9.0
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling signal-hook v0.3.14
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]    Compiling unicode-ident v1.0.3
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling lock_api v0.4.8
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]    Compiling crossbeam-utils v0.8.11
[INFO] [stderr]     Checking once_cell v1.13.1
[INFO] [stderr]     Checking cassowary v0.3.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking unicode-segmentation v1.9.0
[INFO] [stderr]     Checking base64 v0.12.3
[INFO] [stderr]    Compiling libz-sys v1.1.8
[INFO] [stderr]    Compiling openssl-sys v0.9.75
[INFO] [stderr]    Compiling libssh2-sys v0.2.23
[INFO] [stderr]     Checking crossbeam-channel v0.5.6
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking mio v0.8.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking dirs-sys v0.3.7
[INFO] [stderr]     Checking rpassword v4.0.5
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking signal-hook-mio v0.2.3
[INFO] [stderr]     Checking crossterm v0.25.0
[INFO] [stderr]     Checking tui v0.19.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.32
[INFO] [stderr]     Checking thiserror v1.0.32
[INFO] [stderr]     Checking ssh2 v0.9.3
[INFO] [stderr]     Checking rftp v0.1.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Iterator` is imported redundantly
[INFO] [stdout]   --> src/rftp.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::iter::Iterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/645bb72776a6a56a1a8f52631a44bd082b2ba509/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Iterator` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Iterator` is imported redundantly
[INFO] [stdout]   --> src/rftp.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::iter::Iterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/645bb72776a6a56a1a8f52631a44bd082b2ba509/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Iterator` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.85s
[INFO] running `Command { std: "docker" "inspect" "6488436b48b83c33251bbce4611c36ba9736930a7261940d05661a8a33bfb1c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6488436b48b83c33251bbce4611c36ba9736930a7261940d05661a8a33bfb1c2", kill_on_drop: false }`
[INFO] [stdout] 6488436b48b83c33251bbce4611c36ba9736930a7261940d05661a8a33bfb1c2