[INFO] fetching crate unix_str 1.0.0...
[INFO] checking unix_str-1.0.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate unix_str 1.0.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate unix_str 1.0.0 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 unix_str 1.0.0
[INFO] finished tweaking crates.io crate unix_str 1.0.0
[INFO] tweaked toml for crates.io crate unix_str 1.0.0 written to /workspace/builds/worker-1-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] 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-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] f1b5354b63124921050e0dadf9d3ae2bf34eb2ba0e61d9d87ef08706fa3784cd
[INFO] running `Command { std: "docker" "start" "-a" "f1b5354b63124921050e0dadf9d3ae2bf34eb2ba0e61d9d87ef08706fa3784cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f1b5354b63124921050e0dadf9d3ae2bf34eb2ba0e61d9d87ef08706fa3784cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1b5354b63124921050e0dadf9d3ae2bf34eb2ba0e61d9d87ef08706fa3784cd", kill_on_drop: false }`
[INFO] [stdout] f1b5354b63124921050e0dadf9d3ae2bf34eb2ba0e61d9d87ef08706fa3784cd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 06878fbf3d2d57ae636f0093dabf33a853635cf6e4caf2f8943425c00f9c798c
[INFO] running `Command { std: "docker" "start" "-a" "06878fbf3d2d57ae636f0093dabf33a853635cf6e4caf2f8943425c00f9c798c", kill_on_drop: false }`
[INFO] [stderr]     Checking unix_str v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Formatter` is imported redundantly
[INFO] [stdout]   --> src/sys_common/bytestring.rs:26:29
[INFO] [stdout]    |
[INFO] [stdout] 25 |     use super::*;
[INFO] [stdout]    |         -------- the item `Formatter` is already imported here
[INFO] [stdout] 26 |     use crate::fmt::{Debug, Formatter, Result};
[INFO] [stdout]    |                             ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Result` is imported redundantly
[INFO] [stdout]   --> src/sys_common/bytestring.rs:26:40
[INFO] [stdout]    |
[INFO] [stdout] 25 |     use super::*;
[INFO] [stdout]    |         -------- the item `Result` is already imported here
[INFO] [stdout] 26 |     use crate::fmt::{Debug, Formatter, Result};
[INFO] [stdout]    |                                        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `AsInner` is imported redundantly
[INFO] [stdout]     --> src/lib.rs:1220:22
[INFO] [stdout]      |
[INFO] [stdout] 1219 |     use super::*;
[INFO] [stdout]      |         -------- the item `AsInner` is already imported here
[INFO] [stdout] 1220 |     use sys_common::{AsInner, IntoInner};
[INFO] [stdout]      |                      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `IntoInner` is imported redundantly
[INFO] [stdout]     --> src/lib.rs:1220:31
[INFO] [stdout]      |
[INFO] [stdout] 1219 |     use super::*;
[INFO] [stdout]      |         -------- the item `IntoInner` is already imported here
[INFO] [stdout] 1220 |     use sys_common::{AsInner, IntoInner};
[INFO] [stdout]      |                               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Rc` is imported redundantly
[INFO] [stdout]     --> src/lib.rs:1222:9
[INFO] [stdout]      |
[INFO] [stdout] 1219 |     use super::*;
[INFO] [stdout]      |         -------- the item `Rc` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 1222 |     use alloc::rc::Rc;
[INFO] [stdout]      |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Arc` is imported redundantly
[INFO] [stdout]     --> src/lib.rs:1223:9
[INFO] [stdout]      |
[INFO] [stdout] 1219 |     use super::*;
[INFO] [stdout]      |         -------- the item `Arc` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 1223 |     use alloc::sync::Arc;
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `AsInnerMut` is never used
[INFO] [stdout]   --> src/sys_common.rs:25:11
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub trait AsInnerMut<Inner: ?Sized> {
[INFO] [stdout]    |           ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `AsInnerMut` is never used
[INFO] [stdout]   --> src/sys_common.rs:25:11
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub trait AsInnerMut<Inner: ?Sized> {
[INFO] [stdout]    |           ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.26s
[INFO] running `Command { std: "docker" "inspect" "06878fbf3d2d57ae636f0093dabf33a853635cf6e4caf2f8943425c00f9c798c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06878fbf3d2d57ae636f0093dabf33a853635cf6e4caf2f8943425c00f9c798c", kill_on_drop: false }`
[INFO] [stdout] 06878fbf3d2d57ae636f0093dabf33a853635cf6e4caf2f8943425c00f9c798c
[INFO] checking unix_str-1.0.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate unix_str 1.0.0 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate unix_str 1.0.0 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 unix_str 1.0.0
[INFO] finished tweaking crates.io crate unix_str 1.0.0
[INFO] tweaked toml for crates.io crate unix_str 1.0.0 written to /workspace/builds/worker-1-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] 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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 7a4ba94354cddb929b6689a444dc17b0bb0ec2f2df03142ce6e393e720ae9071
[INFO] running `Command { std: "docker" "start" "-a" "7a4ba94354cddb929b6689a444dc17b0bb0ec2f2df03142ce6e393e720ae9071", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7a4ba94354cddb929b6689a444dc17b0bb0ec2f2df03142ce6e393e720ae9071", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a4ba94354cddb929b6689a444dc17b0bb0ec2f2df03142ce6e393e720ae9071", kill_on_drop: false }`
[INFO] [stdout] 7a4ba94354cddb929b6689a444dc17b0bb0ec2f2df03142ce6e393e720ae9071
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 9baf2e3c7ec955023a9cb06a5b3b01740bc7c7b986ef8d3ecae17aa9384ec4b4
[INFO] running `Command { std: "docker" "start" "-a" "9baf2e3c7ec955023a9cb06a5b3b01740bc7c7b986ef8d3ecae17aa9384ec4b4", kill_on_drop: false }`
[INFO] [stderr]     Checking unix_str v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Formatter` is imported redundantly
[INFO] [stdout]   --> src/sys_common/bytestring.rs:26:29
[INFO] [stdout]    |
[INFO] [stdout] 25 |     use super::*;
[INFO] [stdout]    |         -------- the item `Formatter` is already imported here
[INFO] [stdout] 26 |     use crate::fmt::{Debug, Formatter, Result};
[INFO] [stdout]    |                             ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Result` is imported redundantly
[INFO] [stdout]   --> src/sys_common/bytestring.rs:26:40
[INFO] [stdout]    |
[INFO] [stdout] 25 |     use super::*;
[INFO] [stdout]    |         -------- the item `Result` is already imported here
[INFO] [stdout] 26 |     use crate::fmt::{Debug, Formatter, Result};
[INFO] [stdout]    |                                        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `AsInner` is imported redundantly
[INFO] [stdout]     --> src/lib.rs:1220:22
[INFO] [stdout]      |
[INFO] [stdout] 1219 |     use super::*;
[INFO] [stdout]      |         -------- the item `AsInner` is already imported here
[INFO] [stdout] 1220 |     use sys_common::{AsInner, IntoInner};
[INFO] [stdout]      |                      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `IntoInner` is imported redundantly
[INFO] [stdout]     --> src/lib.rs:1220:31
[INFO] [stdout]      |
[INFO] [stdout] 1219 |     use super::*;
[INFO] [stdout]      |         -------- the item `IntoInner` is already imported here
[INFO] [stdout] 1220 |     use sys_common::{AsInner, IntoInner};
[INFO] [stdout]      |                               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Rc` is imported redundantly
[INFO] [stdout]     --> src/lib.rs:1222:9
[INFO] [stdout]      |
[INFO] [stdout] 1219 |     use super::*;
[INFO] [stdout]      |         -------- the item `Rc` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 1222 |     use alloc::rc::Rc;
[INFO] [stdout]      |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Arc` is imported redundantly
[INFO] [stdout]     --> src/lib.rs:1223:9
[INFO] [stdout]      |
[INFO] [stdout] 1219 |     use super::*;
[INFO] [stdout]      |         -------- the item `Arc` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 1223 |     use alloc::sync::Arc;
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `AsInnerMut` is never used
[INFO] [stdout]   --> src/sys_common.rs:25:11
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub trait AsInnerMut<Inner: ?Sized> {
[INFO] [stdout]    |           ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `AsInnerMut` is never used
[INFO] [stdout]   --> src/sys_common.rs:25:11
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub trait AsInnerMut<Inner: ?Sized> {
[INFO] [stdout]    |           ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "9baf2e3c7ec955023a9cb06a5b3b01740bc7c7b986ef8d3ecae17aa9384ec4b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9baf2e3c7ec955023a9cb06a5b3b01740bc7c7b986ef8d3ecae17aa9384ec4b4", kill_on_drop: false }`
[INFO] [stdout] 9baf2e3c7ec955023a9cb06a5b3b01740bc7c7b986ef8d3ecae17aa9384ec4b4