[INFO] fetching crate sea-canal 0.3.0...
[INFO] checking sea-canal-0.3.0 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] extracting crate sea-canal 0.3.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate sea-canal 0.3.0 on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sea-canal 0.3.0
[INFO] finished tweaking crates.io crate sea-canal 0.3.0
[INFO] tweaked toml for crates.io crate sea-canal 0.3.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eeed5f51286ed986b57367bcefe8bdaa486d5e27536d9d887136cccfc52968ab
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "eeed5f51286ed986b57367bcefe8bdaa486d5e27536d9d887136cccfc52968ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eeed5f51286ed986b57367bcefe8bdaa486d5e27536d9d887136cccfc52968ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eeed5f51286ed986b57367bcefe8bdaa486d5e27536d9d887136cccfc52968ab", kill_on_drop: false }`
[INFO] [stdout] eeed5f51286ed986b57367bcefe8bdaa486d5e27536d9d887136cccfc52968ab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6e3e0561fefee3afca62eb510b31971b681a999f5d679a4ef3c2b4ab6aacd14a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6e3e0561fefee3afca62eb510b31971b681a999f5d679a4ef3c2b4ab6aacd14a", kill_on_drop: false }`
[INFO] [stderr]     Checking sea-canal v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/pattern.rs:163:17
[INFO] [stdout]     |
[INFO] [stdout] 163 |                 try!(write!(fmt, ", "));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/pattern.rs:166:13
[INFO] [stdout]     |
[INFO] [stdout] 166 |             try!(write!(fmt, "{}", elem));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/pattern.rs:163:17
[INFO] [stdout]     |
[INFO] [stdout] 163 |                 try!(write!(fmt, ", "));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/pattern.rs:166:13
[INFO] [stdout]     |
[INFO] [stdout] 166 |             try!(write!(fmt, "{}", elem));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/pattern.rs:68:19
[INFO] [stdout]    |
[INFO] [stdout] 68 |     fn fmt(&self, mut fmt: &mut Formatter) -> Result<(), Error> {
[INFO] [stdout]    |                   ----^^^
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/pattern.rs:160:19
[INFO] [stdout]     |
[INFO] [stdout] 160 |     fn fmt(&self, mut fmt: &mut Formatter) -> Result<(), Error> {
[INFO] [stdout]     |                   ----^^^
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/pattern.rs:68:19
[INFO] [stdout]    |
[INFO] [stdout] 68 |     fn fmt(&self, mut fmt: &mut Formatter) -> Result<(), Error> {
[INFO] [stdout]    |                   ----^^^
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/pattern.rs:160:19
[INFO] [stdout]     |
[INFO] [stdout] 160 |     fn fmt(&self, mut fmt: &mut Formatter) -> Result<(), Error> {
[INFO] [stdout]     |                   ----^^^
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.46s
[INFO] running `Command { std: "docker" "inspect" "6e3e0561fefee3afca62eb510b31971b681a999f5d679a4ef3c2b4ab6aacd14a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e3e0561fefee3afca62eb510b31971b681a999f5d679a4ef3c2b4ab6aacd14a", kill_on_drop: false }`
[INFO] [stdout] 6e3e0561fefee3afca62eb510b31971b681a999f5d679a4ef3c2b4ab6aacd14a