[INFO] fetching crate ssh-rs 0.4.5...
[INFO] checking ssh-rs-0.4.5 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate ssh-rs 0.4.5 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate ssh-rs 0.4.5 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 ssh-rs 0.4.5
[INFO] finished tweaking crates.io crate ssh-rs 0.4.5
[INFO] tweaked toml for crates.io crate ssh-rs 0.4.5 written to /workspace/builds/worker-4-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]      Locking 126 packages
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding generic-array v0.14.7 (latest: v1.0.0)
[INFO] [stderr]       Adding heck v0.4.1 (latest: v0.5.0)
[INFO] [stderr]       Adding nu-ansi-term v0.46.0 (latest: v0.50.0)
[INFO] [stderr]       Adding redox_syscall v0.4.1 (latest: v0.5.1)
[INFO] [stderr]       Adding spin v0.5.2 (latest: v0.9.8)
[INFO] [stderr]       Adding strum v0.25.0 (latest: v0.26.2)
[INFO] [stderr]       Adding strum_macros v0.25.3 (latest: v0.26.2)
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded ssh-encoding v0.2.0
[INFO] [stderr]   Downloaded ssh-cipher v0.2.0
[INFO] [stderr]   Downloaded des v0.8.1
[INFO] [stderr]   Downloaded dsa v0.6.3
[INFO] [stderr]   Downloaded ssh-key v0.6.5
[INFO] [stderr]   Downloaded p521 v0.13.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 575d65b43a795e48f370213f0d62b298d0075eba1e1a6cd70a442f98a7090bca
[INFO] running `Command { std: "docker" "start" "-a" "575d65b43a795e48f370213f0d62b298d0075eba1e1a6cd70a442f98a7090bca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "575d65b43a795e48f370213f0d62b298d0075eba1e1a6cd70a442f98a7090bca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "575d65b43a795e48f370213f0d62b298d0075eba1e1a6cd70a442f98a7090bca", kill_on_drop: false }`
[INFO] [stdout] 575d65b43a795e48f370213f0d62b298d0075eba1e1a6cd70a442f98a7090bca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] b562f6792d439cfc485ede8d4073465bb3bc3a627abf391ab645dc47bed7db6f
[INFO] running `Command { std: "docker" "start" "-a" "b562f6792d439cfc485ede8d4073465bb3bc3a627abf391ab645dc47bed7db6f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]     Checking const-oid v0.9.6
[INFO] [stderr]     Checking base64ct v1.6.0
[INFO] [stderr]    Compiling libm v0.2.8
[INFO] [stderr]    Compiling platforms v3.4.0
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking subtle v2.5.0
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]    Compiling num-bigint-dig v0.8.4
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]    Compiling ring v0.17.8
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]     Checking base16ct v0.2.0
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]    Compiling ssh-rs v0.4.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking sharded-slab v0.1.7
[INFO] [stderr]     Checking thread_local v1.1.8
[INFO] [stderr]     Checking pem-rfc7468 v0.7.0
[INFO] [stderr]    Compiling curve25519-dalek v4.1.2
[INFO] [stderr]     Checking der v0.7.9
[INFO] [stderr]     Checking tracing-log v0.2.0
[INFO] [stderr]     Checking tracing-subscriber v0.3.18
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking inout v0.1.3
[INFO] [stderr]     Checking sec1 v0.7.3
[INFO] [stderr]     Checking cipher v0.4.4
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking ctr v0.9.2
[INFO] [stderr]     Checking aes v0.8.4
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking signature v2.2.0
[INFO] [stderr]     Checking ed25519 v2.2.3
[INFO] [stderr]     Checking ssh-encoding v0.2.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking ssh-cipher v0.2.0
[INFO] [stderr]     Checking spki v0.7.3
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking pkcs8 v0.10.2
[INFO] [stderr]     Checking pkcs1 v0.7.5
[INFO] [stderr]     Checking num-iter v0.1.44
[INFO] [stderr]     Checking rsa v0.9.6
[INFO] [stderr]    Compiling curve25519-dalek-derive v0.1.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling strum_macros v0.25.3
[INFO] [stderr]     Checking thiserror v1.0.58
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking ed25519-dalek v2.1.1
[INFO] [stderr]     Checking ssh-key v0.6.5
[INFO] [stdout] warning: the item `flate2` is imported redundantly
[INFO] [stdout]  --> src/algorithm/compression/zlib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use flate2;
[INFO] [stdout]   |     ^^^^^^ the item `flate2` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ctr` is imported redundantly
[INFO] [stdout]  --> src/algorithm/encryption/aes_ctr.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use ctr;
[INFO] [stdout]   |     ^^^ the item `ctr` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `flate2` is imported redundantly
[INFO] [stdout]  --> src/algorithm/compression/zlib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use flate2;
[INFO] [stdout]   |     ^^^^^^ the item `flate2` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ctr` is imported redundantly
[INFO] [stdout]  --> src/algorithm/encryption/aes_ctr.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use ctr;
[INFO] [stdout]   |     ^^^ the item `ctr` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `iv_size` is never used
[INFO] [stdout]   --> src/algorithm/encryption/mod.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub(crate) trait Encryption: Send + Sync {
[INFO] [stdout]    |                  ---------- method in this trait
[INFO] [stdout] 16 |     fn bsize(&self) -> usize;
[INFO] [stdout] 17 |     fn iv_size(&self) -> usize;
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `IV_SIZE` is never used
[INFO] [stdout]  --> src/algorithm/encryption/chacha20_poly1305_openssh.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | const IV_SIZE: usize = 0;
[INFO] [stdout]   |       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/channel/local/channel.rs:20:10
[INFO] [stdout]    |
[INFO] [stdout] 20 |     Code(u8),
[INFO] [stdout]    |     ---- ^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 20 |     Code(()),
[INFO] [stdout]    |          ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `iv_size` is never used
[INFO] [stdout]   --> src/algorithm/encryption/mod.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub(crate) trait Encryption: Send + Sync {
[INFO] [stdout]    |                  ---------- method in this trait
[INFO] [stdout] 16 |     fn bsize(&self) -> usize;
[INFO] [stdout] 17 |     fn iv_size(&self) -> usize;
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `IV_SIZE` is never used
[INFO] [stdout]  --> src/algorithm/encryption/chacha20_poly1305_openssh.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | const IV_SIZE: usize = 0;
[INFO] [stdout]   |       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/channel/local/channel.rs:20:10
[INFO] [stdout]    |
[INFO] [stdout] 20 |     Code(u8),
[INFO] [stdout]    |     ---- ^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 20 |     Code(()),
[INFO] [stdout]    |          ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 22.72s
[INFO] running `Command { std: "docker" "inspect" "b562f6792d439cfc485ede8d4073465bb3bc3a627abf391ab645dc47bed7db6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b562f6792d439cfc485ede8d4073465bb3bc3a627abf391ab645dc47bed7db6f", kill_on_drop: false }`
[INFO] [stdout] b562f6792d439cfc485ede8d4073465bb3bc3a627abf391ab645dc47bed7db6f